Hitachi RCI-1.0FSN3 Service Manual
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Hitachi RCI-1.0FSN3 Service Manual

Indoor units system free series & complementary systems fsn(h)(2/3/4)(e/m)(i)(-du)
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INDOOR UNITS SYSTEM FREE SERIES
& Complementary Systems
FSN(H)(2/3/4)(E/M)(i)(-DU)

Service Manual

RCI
RPK
RCIM
RPF
RPFI
RCD
KPI
RPC
DX - Interface
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RPIM

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Summary of Contents for Hitachi RCI-1.0FSN3

  • Page 1: Service Manual

    INDOOR UNITS SYSTEM FREE SERIES & Complementary Systems FSN(H)(2/3/4)(E/M)(i)(-DU) Service Manual RCIM RPFI DX - Interface RPIM...
  • Page 3 Index I n d e x General information Unit installation Piping work and refrigerant charge Electrical wiring Control system Optional functions Test run Troubleshooting Spare parts Servicing Electrical checks of the main parts Maintenance notes SMGB0077 rev.0 - 01/2013...
  • Page 4 Index SMGB0077 rev.0 - 01/2013...

  • Page 5: Table Of Contents

    Index Index General information ....................1 1.1. General information ..........................2 1.1.1. Introduction ..............................2 1.1.2. Environment-friendly units ........................... 2 1.2. Applied symbols ............................3 1.3. Product guide ............................4 1.3.1. Classification of indoor unit models ......................4 1.3.2. Classification of KPI models ........................4 1.3.3.
  • Page 6 Index 2.7.1. Accessories supplied with the unit ......................55 2.7.2. Unit installation ............................55 2.7.3. Mounting bracket dimensions ........................60 2.8. RPF - Floor type, RPFI - Floor concealed type ..................62 2.8.1. Accessories supplied with the unit ......................62 2.8.2.
  • Page 7 Index 3.6. Refrigerant charge..........................125 3.7. Precautions in the event of refrigerant leaks ..................126 3.7.1. Maximum permissible concentration of hydrofluorocarbon (HFC) ............126 3.7.2. Calculation of the concentration of refrigerant ..................126 3.7.3. Countermeasures in the event of refrigerant leaks .................. 126 Electrical wiring .....................
  • Page 8 Index 6.1.1. Available ports ............................208 6.1.2. Optional signal configuration ........................210 6.1.3. Programming with remote control (PC-ART example) ................213 6.1.4. Description of optional input signals ......................214 6.1.5. Description of optional output signals ...................... 217 6.2. Complementary systems ........................219 6.2.1.
  • Page 9 Index 9.14. RPK-(2.0-4.0)FSN3M .......................... 290 9.15. RPF-(1.0-2.5)FSN2E ........................... 292 9.16. RPFI-(1.0-2.5)FSN2E .......................... 294 9.17. KPI-(252-2002)(E/H)3E and KPI-(502-1002)X3E................296 9.18. DX-Interface ............................298 10. Servicing ......................... 301 10.1. RCI - 4-way cassette (1.0-6.0)FSN3 ....................304 10.1.1. Removing Air Filter and Air Inlet Grille ..................... 304 10.1.2.
  • Page 10 Index 10.4.1. Removal of the long-lasting filter and the air inlet grille ................335 10.4.2. Removal of the electrical box ........................335 10.4.3. Removal of the optional air panel ......................335 10.4.4. Removal of the fan duct and the fan ......................336 10.4.5.
  • Page 11 Index 10.9.6. Replacing PCB1 for Control ........................370 10.9.7. Removing Electrical Box .......................... 372 10.9.8. Removing AS Motor ..........................374 10.9.9. Removing Drain Pan ..........................375 10.9.10. Removing Heat Exchanger ........................377 10.9.11. Removing Thermistors for Freeze Protection, Gas Pipe, Outlet Air and Inlet Air ........380 10.9.12.
  • Page 12 Index TCGB0077 rev.0 - 01/2013...

  • Page 13: General Information

    1 General information G e n e r a l i n f o r m a t i o n Index 1.1. General information ..........................2 1.1.1. Introduction ..............................2 1.1.2. Environment-friendly units ........................... 2 1.2. Applied symbols ............................3 1.3.

  • Page 14: General Information

    No type of modification must be made to the equipment without prior, written authorisation from the manufacturer. 1.1.1 Introduction HITACHI offers the SYSTEM FREE range of indoor units, the main advantage of which is that they can be combined with UTOPIA and SET-FREE series outdoor units.

  • Page 15: Applied Symbols

    1 General information 1.2 Applied symbols During normal air conditioning system design work or unit installation, greater attention must be paid in certain situations requiring particular care in order to avoid damage to the unit, the installation or the building or property. Situations that jeopardise the safety of those in the surrounding area or that put the unit itself at risk will be clearly indicated in this manual.

  • Page 16: Product Guide

    1 General information 1.3 Product guide 1.3.1 Classification of indoor unit models Unit type (indoor unit): RCI, RCIM, RCD, RPC, RPI, RPIM, RPK, RPF, RPFI Position-separating hyphen (fixed) Capacity (HP): 0.8, 1.0, 1.5, 2.0, 2.5, 3.0, 4.0, 5.0, 6.0, 8.0, 10.0 FS = SYSTEM FREE N = R410A refrigerant H = Hotel (RPK-(0.8/1.5) only)

  • Page 17: Product Guide: Indoor Units

    RCI and RCIM indoor units FSN(2/3)(E)(i) indoor units RCIM 4-way cassette 4-way cassette (compact) Unit Code Unit Code Unit Code RCIM-0.8FSN2 60278010 RCI-1.0FSN3Ei 7E403014 RCI-1.0FSN3 60278119 RCIM-1.0FSN2 60278011 RCI-1.5FSN3Ei 7E403015 RCI-1.5FSN3 60278120 RCIM-1.5FSN2 60278013 RCI-2.0FSN3Ei 7E403016 RCI-2.0FSN3 60278121 RCIM-2.0FSN2 (*) 60278014 RCI-2.5FSN3Ei...
  • Page 18 1 General information  RCD and RPC indoor units FSN2(E) indoor units 2-way cassette Ceiling type Unit Code Unit Code RCD-1.0FSN2 60278029 RCD-1.5FSN2 60278030 RCD-2.0FSN2 60278031 RPC-2.0FSN2E 7E440003 RCD-2.5FSN2 60278032 RPC-2.5FSN2E 7E440004 RCD-3.0FSN2 60278033 RPC-3.0FSN2E 7E440005 RCD-4.0FSN2 60278034 RPC-4.0FSN2E 7E440007 RCD-5.0FSN2 60278035 RPC-5.0FSN2E...
  • Page 19 1 General information  RPI and RPIM indoor units FSN(3/4)E indoor units RPIM Indoor ducted unit Unit Code Unit Code Unit Code RPIM-0.8FSN4E 7E430013 RPI-0.8FSN4E 7E424013 RPIM-0.8FSN4E 7E431013 RPIM-1.0FSN4E 7E430014 RPI-1.0FSN4E 7E424014 RPIM-1.0FSN4E 7E431014 RPIM-1.5FSN4E 7E430015 RPI-1.5FSN4E 7E424015 RPIM-1.5FSN4E 7E431015 RPI-2.0FSN4E 7E424016 RPI-2.5FSN4E...
  • Page 20 1 General information  RPK, RPF and RPFI indoor units FSN(H)(2/3)(E/M) indoor units RPFI Wall type Floor type Floor concealed type Unit Code Unit Code Unit Code RPK-0.8FSN3M 60278146 RPK-0.8FSNH3M 60278154 RPF-1.0FSN2E 7E450001 RPFI-1.0FSN2E 7E460001 RPK-1.0FSN3M 60278147 RPK-1.0FSNH3M 60278155 RPF-1.5FSN2E 7E450002 RPFI-1.5FSN2E 7E460002...

  • Page 21: Product Guide: Complementary Systems

    1 General information 1.3.5 Product guide: complementary systems  KPI energy / heat recovery unit Complementary systems Energy recovery Heat recovery Active (Energy Recovery+DX section) Unit Code Unit Code Unit Code KPI-252E3E 70602000 KPI-502E3E 70602001 KPI-502H3E 70602101 KPI-502X3E 70602201 KPI-802E3E 70602002 KPI-802H3E 70602102...

  • Page 22: Accessory Code List

    1 General information 1.3.6 Accessory code list HITACHI has a wide range of accessories and remote control systems that can be used with the SET FREE and UTOPIA outdoor units. Consult the Technical Catalogue for controls and for the corresponding outdoor units.
  • Page 23 1 General information Name Description Code Figure TRE-46N1 70527015 Distributor UTOPIA TRE-812N1 70527016 QE-812N1 Distributor UTOPIA 70527017 E-102SN2 70524001 E-162SN2 70524002 E-242SN2 70524004 E-302SN2 70524005 E-52XN2 70525000 Branch pipe (multikit) E-102XN2 70525001 E-162XN2 70525002 E-202XN2 70525003 E-242XN2 70525004 E-322XN2 70525005 MH-84AN 70522007 MH-108AN...

  • Page 25: Unit Installation

    2 Unit installation U n i t i n s t a l l a t i o n Index 2.1. RCI - 4-way cassette ..........................15 2.1.1. Accessories supplied with the unit ......................15 2.1.2. Unit installation ............................16 2.1.3.
  • Page 26 2 Unit installation 2.7.1. Accessories supplied with the unit ......................55 2.7.2. Unit installation ............................55 2.7.3. Mounting bracket dimensions ........................60 2.8. RPF - Floor type, RPFI - Floor concealed type ..................62 2.8.1. Accessories supplied with the unit ......................62 2.8.2.

  • Page 27: Rci - 4-Way Cassette

    2.1.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit.  RCI-FSN3 indoor unit...

  • Page 28: Unit Installation

    2 Unit installation Accessory Quantity Purpose Drain hose For drain hose connection Wire clamp Checking pattern For adjusting space of false ceiling opening and position of the unit (Cut out from the carton board) Applicable panel Indoor unit Applicable panel P-AP160NA1 RCI-(1.0-6.0)FSN3 P-AP160NAE (with motion sensor)

  • Page 29: Mounting Of Indoor Unit

    2 Unit installation Opening of false ceiling Cut out the area for the indoor unit in the false ceiling and install suspension bolts, as shown below: Dimension of Opening: 860 to 910 Unit size: 840 Dimension of Suspension Bolts: 760 4-Positions of Suspension Bolts...
  • Page 30 2 Unit installation N O T E • If a false ceiling has already been installed, complete all piping and wiring work inside the ceiling before hooking-up the indoor unit. • Secure the indoor unit using the nuts, flat washers and spring washers. (These nuts and washers are supplied, 4 pieces each) Adjusting the space between indoor units and false ceiling opening Adjust the indoor unit to the correct position while checking with the pattern for installation.

  • Page 31: Accessories Supplied With The Air Panel: P-Ap160Na1 / P-Ap160Nae

    2.1.3 Accessories supplied with the air panel: P-AP160NA1 / P-AP160NAE Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory P-AP160NA1...

  • Page 32: Air Panel Installation

    2 Unit installation 2.1.4 Air panel installation Check the indoor unit height from the false ceiling surface Check the distance between the indoor unit and the false ceiling. It is 12+5mm as shown below. Indoor unit Ceiling surface If not, adjust the distance by using the checking scale with maintaining the levelness of the indoor unit. Removing Air Intake Grille from Air Panel.
  • Page 33 2 Unit installation 2 Pull down the U-shaped hook (at 2 positions) located at the indoor unit side. 3 Mount the air panel temporarily. Fit the corner position of the refrigerant pipe connection at the indoor unit and the position stamped as “Ref. Pipe ”. Then, catch the C-shaped hinges (2 portions) onto the U-shaped hooks (2 portions). 4 Fix the air panel to the fixing plate by factory supplied long screws (M6 cross screws).
  • Page 34 2 Unit installation • If any gap has even though tighten long screws sufficient, readjust the height of indoor unit. No gap shall exist • It’s able to adjust the indoor unit height by using wrench from the corner pocket. Wrench • Too considerable adjustment of height cause dewing from drain-pan. • Do not turn the air louver by hand. If moved, the louver mechanism would be damaged. Attachment of Corner Pocket Cover Attach the corner pocket covers after the air panel is mounted completely.
  • Page 35 2 Unit installation Attachment of corner pocket cover with motion sensor of air panel model P-AP160NAE The corner pocket cover with motion sensor can be attached to any of corners. Determine the attaching place as user’s request. c. Connect the relay wire (attached in the air panel) to CN10 in the electrical box. Projection Air panel Corner pocket...

  • Page 36: Accessories Supplied With The Air Panel: P-N23Na

    2.1.5 Accessories supplied with the air panel: P-N23NA Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance...
  • Page 37 2 Unit installation Remove the air inlet grille from the air panel Nº Part Take up the grille keeping it inclined 45° (correct) Air intake grille Air filter Wrong Air panel Ceiling Open the air inlet grille until it is at an angle of approximately 45° in relation to the air panel surface.
  • Page 38 2 Unit installation Fit the air panel in the attachment position using the set screws supplied (M6 x 50). Nº Part Indoor unit undersurface Fix screw until this end touches it Fixing plate (Indoor unit side) Sealing gasket Long screw Fixing plate (air panel side) Panel False ceiling...
  • Page 39 2 Unit installation Once the air panel is installed, the final height of the indoor unit can be adjusted using a wrench through the corner cover. Excessively adjusting the height leads to condensation leaks from the drain pan. C A U T I O N Do not move the air louver by hand.

  • Page 40: Rcim - 4-Way Cassette (Compact)

    2.2.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity...
  • Page 41 2 Unit installation 1. Piping connection. 2. Drain piping connection. 3. Service access door. Check that the drain hose can be installed maintaining the necessary down-slope. Check that the ceiling surface where the air panel is to be installed is completely horizontal. Installation Cut the area of the unit in the false ceiling and reinforce the opening made.
  • Page 42 2 Unit installation 1 Suspension bolts (field-supplied) 2 Nut (field-supplied) 3 Washer with insulation accessory 4 Suspension bracket (attached indoor unit) 5 Washer (accessory) 6 Nut (field-supplied) 7 Ceiling Thread on the nuts and fit the washers for all the bolts, as shown in the figure. Fit two suspension brackets onto the nut and washer of each bolt, starting on one side.

  • Page 43: Accessories Supplied With The Air Panel: P-N23Wam

    2.2.3 Accessories supplied with the air panel: P-N23WAM Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance...
  • Page 44 2 Unit installation Remove the air inlet grille from the air panel Nº Part Take up the grille keeping it inclined 45° (correct) Air intake grille Air filter Wrong Air panel Ceiling Open the air inlet grille until it is at an angle of approximately 45° in relation to the air panel surface. Lift the grille while keeping it tilted.
  • Page 45 2 Unit installation Fit the air panel in the attachment position using the screws supplied (M5). First secure the screws in positions -A- and -B- and then the rest. 1 Tighten the fixing screw completely 2 Indoor unit 3 Fixing sheet for air panel (indoor unit side) 4 Bottom side of indoor unit 5 Sealing gasket 6 Fixing sheet for air panel (panel side)
  • Page 46 2 Unit installation Considerations following air panel installation Tighten the long bolts appropriately. Air leakage Otherwise, installation faults may be caused. Dewing Smudge Readjust the height of the indoor unit if gaps are seen around it. Use long bolts and nuts for readjustment, as indicated below. No gap shall exist Once the air panel is installed, the final height of the indoor unit can be adjusted using a wrench through the corner cover.
  • Page 47 2 Unit installation Electrical connection of the air panel C A U T I O N Switch off the power supply to the unit before coupling the connectors, otherwise the automatic louver will not work. The following connector is used with the air panel (see from the lower surface of the air panel without the air inlet grille). Connect the connectors for auto-swing motor (Low voltage 5pin, white).

  • Page 48: Rcd - 2-Way Cassette

    2.3.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity...
  • Page 49 2 Unit installation space around the unit for installation and maintenance. Install a service hatch near the pipe connection area and electrical junction box for installation and maintenance work. 1. Piping connection. 2. Wall. 3. Service access panel. Check that the ceiling surface where the air panel is to be installed is completely horizontal. Check that the drain hose can be installed maintaining the necessary down-slope.
  • Page 50 2 Unit installation Steel beams Wooden beams 1 Suspension bolts (field-supplied) 2 Nut (field-supplied) 3 Washer with insulation accessory 4 Suspension bracket (attached indoor unit) 5 Washer (field-supplied) 6 Nut (field-supplied) 7 Ceiling Thread on the nuts and fit the washers for all the bolts, as shown in the figure. Fit two suspension brackets onto the nut and washer of each bolt, starting on one side.
  • Page 51 2 Unit installation Fit the nuts, flat washers and spring washers supplied (4 of each) to secure the indoor unit. Check that the condensate discharge system in the indoor unit works correctly. To do so, check the level of the drain pan using a spirit level or a clear flexible pipe full of water.

  • Page 52: Accessories Supplied With The Air Panel: P-N23Dwa / P-N46Dwa

    2.3.3 Accessories supplied with the air panel: P-N23DWA / P-N46DWA Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance...
  • Page 53 2 Unit installation Remove the air inlet grille from the air panel Nº Part Take up the grille keeping it inclined Approx. 40° (correct) Air inlet grille Air filter Wrong Air panel Ceiling Open the air inlet grille until it is at an angle of approximately 40° in relation to the air panel surface. Lift the grille while keeping it tilted.
  • Page 54 2 Unit installation Electrical connection of the air panel C A U T I O N Switch off the power supply to the unit before coupling the connectors, otherwise the automatic louver will not work. The following connector is used with the air panel (see from the lower surface of the air panel without the air inlet grille).

  • Page 55: Rpc - Ceiling

    2.4.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity...

  • Page 56: Suspension Bracket Installation

    2 Unit installation 2.4.3 Suspension bracket installation Cut out the printed pattern on the inside of the unit’s cardboard packaging and follow the instructions printed on it. The following information is also included on the pattern: 1 Separation of the sling bolt for installation positions (a) and (b). 2 Positions of the holes for the refrigerant pipes.

  • Page 57: Indoor Unit Installation

    2 Unit installation 2.4.4 Indoor unit installation C A U T I O N To avoid damage to the resin side covers, remove them before lifting or moving the indoor unit. Thread the nuts and fit the washers on all the bolts. Top side of unit Fit the securing bolts onto the nut and washer of each bolt, starting on one side.
  • Page 58 2 Unit installation Partially built-in unit installation Where a false ceiling is already installed, install and prepare the pipes and cables on the indoor unit before lifting it. Cut the area of the unit in the false ceiling and reinforce the opening made. C A U T I O N •...

  • Page 59: Rpi(M) - Ducted Indoor Unit (0.8-6.0)Fsn(4)E(-Du)

    2.5.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity Purpose For the drain hose connection.
  • Page 60 2 Unit installation Before starting installation, plan the direction of the pipes and wiring required. Also bear in mind that there must be enough space around the unit for installation and maintenance. Check that the ceiling surface where the unit is to be installed is completely horizontal. Check that the drain hose can be installed maintaining the necessary down-slope.

  • Page 61: Air Duct Connection

    2 Unit installation Check that the condensate discharge system in the indoor unit works correctly. To do so, check the level of the drain pan using a spirit level or a clear flexible pipe full of water. The side of the unit on which the drain hose is located must be around 5 mm lower than the front side.

  • Page 62: Maintenance Of The Suction Air Filter

    2 Unit installation 2.5.4 Maintenance of the suction air filter Simply remove the set screws from the bar -1- (RPIM units: 2 screws, RPI units: 3 screws) and remove it to pull the filter downwards. RPIM Change in the air suction direction RPIM-(0.8-1.5)FSN2E (-DU) Change in position of the air inlet on RPIM-(0.8-1.5)FSN2E(-DU) models: the position of the air inlet and, therefore, its direction can be modified by changing the position of the rear cover, as shown in the illustrations.
  • Page 63 2 Unit installation RPI-(2.0-6.0)FSN4E Change in position of the air inlet on RPI-(2.0-6.0)FSN4E models: the position of the air inlet and, therefore, its direction can be modified by changing the position of the rear cover, as shown in the illustrations. 1 Initial position -A- of the air inlet (factory-supplied).

  • Page 64: Rpi - Ducted Indoor Unit (8-10)Fsn3E

    2.6.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity...
  • Page 65 2 Unit installation Installation Install the M10 (3/8) suspension bolts depending on the type of surface: Concrete beams 1 150 to 160 mm 2 Steel 3 Anchor bolt (W3/8 or M10) 4 Concrete 5 Insert (100 to 150 kg) Steel beams Wooden beams Thread the suspension bracket onto the nut and washer of each bolt, starting on one side.

  • Page 66: Air Duct Connection

    2 Unit installation 2.6.3 Air duct connection N O T E • Use field-supplied flexible ducts to avoid abnormal acoustic vibrations. • RPI units are supplied with a standard air filter on the suction side. This filter is supplied for cases where no suction duct is applied (or when the duct is very short). Secure the flexible air duct to the outsides of the hoses supplied with the unit. Bear in mind the following instructions depending on the installation type: 1 Where the suction duct is not used, keep the standard air filter.

  • Page 67: Rpk - Fsn(H)3M Wall Mounted

    2.7.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Q’ty Accessory Purpose 0.8-1.0...
  • Page 68 2 Unit installation Installation C A U T I O N • Where the mounting bracket must be installed on a wooden or concrete wall, make sure it is resistant enough to withstand a weight of 200 kg. • Do not fit the mounting bracket to a pillar. The place where the indoor unit is to be installed must be a flat surface with enough space to fully house the •...
  • Page 69 2 Unit installation Installation on a concrete wall or a concrete block: fit the mounting Suspension bracket bracket to the wall using anchor bolts, as shown in the figure. Q’ty Plug size RPK-(0.8-1.5)FSN(H)3M RPK-(2.0-4.0)FSN3M M4-M5 Screw Plug Remove the bottom cover by pressing -1- and -2-. C A U T I O N •...
  • Page 70 2 Unit installation Removal of the front panel for RPK-(0.8-1.5)FSN(H)3M Hold both sides of flat panel and open it fully. Lift up the air filter, detach the catches from the indoor unit and remove the air filter downward. Remove this part Expand the shaft After the right arm shaft is expanded outward and the shafts are from the hole.
  • Page 71 2 Unit installation Lift up the air filter, detach the catches from the indoor Push the shaft Remove this part unit and remove the air filter downward. toward arrow di- from the hole. After the right arm shaft is pushed inward and the rection.

  • Page 72: Mounting Bracket Dimensions

    2 Unit installation 2.7.3 Mounting bracket dimensions RPK-(0.8-1.5)FSN(H)3M unit suspension bracket Exterior contour for indoor unit Min. Min. Right side of Left side of service space service space 20 36 32 32 Suspension bracket φ65 φ65 Left rear side hole Right rear side hole for for pipings and wirings pipings and wirings...
  • Page 73 2 Unit installation RPK-(2.0-4.0)FSN3M unit suspension bracket Exterior contour for indoor unit Min. Min. Right side of Left side of service space service space × × × (141) (40 ) Suspension (141) bracket φ80 φ80 Left rear side hole Right rear side hole for for pipings and wirings pipings and wirings 1140...

  • Page 74: Rpf - Floor Type, Rpfi - Floor Concealed Type

    2.8.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity...
  • Page 75 2 Unit installation Check that the floor surface where the unit is to be installed is completely horizontal. N O T E Bear in mind the air distribution from the unit to the room and select a suitable place for an even air temperature in the room.
  • Page 76 2 Unit installation Model RPF-1.0FSN2E 1045 RPF-1.5FSN2E 1170 RPFI-1.5FSN2E RPF-2.0FSN2E 1420 1129 1107 RPF-2.5FSN2E RPFI-2.0FSN2E 1234 1129 1107 RPFI-2.5FSN2E Adjust the horizontal level of the unit by loosening or tightening the unit installation bolts. Check that the condensate discharge system in the unit works correctly. To do so, check the level of the drain pan using a spirit level.

  • Page 77: Change In The Air Outlet Direction (Rpfi Units)

    2 Unit installation 2.8.3 Change in the air outlet direction (RPFI units) The air outlet direction of the unit can be modified to adapt it to installation requirements, as shown in the illustration. 1. Lift air outlet -A-. 2. Turn the air outlet on itself until it is opposite its initial position. 3.

  • Page 78: Kpi Energy / Heat Recovery Unit And Kpi Active Unit

    2.9.1 Accessories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accesory Appearance Quantity...
  • Page 79 2 Unit installation Installation Avoid obstacles that could block the air inlet or outlet flow. Choose a position in which the unit does not take in outdoor air mixed with combustion or exhaust fumes. The unit must not be covered in snow. Do not use the unit in the winter when the weather conditions may lead to the formation of condensation in the heat exchanger.

  • Page 80: Duct Connection

    2 Unit installation Where the sling bolts are too short, fit the suspension bracket in an alternative position. 1 Remove the bolts from the upper installation position. 2 Remove the suspension brackets and fit in a higher installation position. 3 Tighten the bolts in the holes from which the suspension brackets have been removed to avoid air leaks. KPI unit Anchor bolt Washer...
  • Page 81 2 Unit installation Position and secure the ducts in the connection hoses and apply aluminium tape (field-supplied) around the connection to avoid air leaks. The duct connection hoses have a previously installed sealing system. Suspend the ducts from the ceiling so that the weight does not rest on the unit. Cover the two outdoor ducts with suitable heat insulation material to prevent the formation of condensation.

  • Page 82: Dx-Interface

    2.10.1 Accesories supplied with the unit Check that the following accessories are supplied with the unit. N O T E Please contact your HITACHI distributor if any of the accessories has not been supplied with the unit. Accessory Appearance Quantity...

  • Page 83: Mounting Method

    2 Unit installation 2.10.3 Mounting method û ü ü ü N O T E In case of installation positions “c” and “d”, make sure to insulate the copper pipes inlet on the expansion valve box cover to avoid any liquid filtration and accumulation. Minimum sizes (mm). 2.10.4 Thermistor installation ...
  • Page 84 2 Unit installation C A U T I O N In case that the thermistors supplied with the Dx-Interface are not long enough, please make sure that the length extension is properly done avoiding the sensing distortion and that the joint is properly insulated to avoid any electrical failure.

  • Page 85: Typical Installation

    2 Unit installation  Air thermistor Two air thermistors are supplied inside the control box. The purpose and identification of each one is as follow: PCB socket / Thermistor Item PCB socket number Thermistor length (mm) connector color Inlet air thermistor Blue THM 1 1200...

  • Page 86: Optional Accessories

    2 Unit installation 2.11 Optional accessories 2.11.1 Outdoor air inlet  Outdoor air inlet duct connection position For RCI-FSN3 indoor units: OACI-160K2 and PD-75 The inlet of outdoor air is possible through the PD-75 or the OACI-160K2 duct connection in the position shown in the figure.
  • Page 87 2 Unit installation N O T E • The total height of the unit is increased by around 55 mm when the outdoor air inlet duct (OACI-160K2) is ins- talled. Take this measurement into account when installing the unit. • Use a cable with a three-terminal connector (PCC-1A) for the CN7 connector on the indoor PCB.
  • Page 88 2 Unit installation This unit cannot take in outdoor air by itself and must be connected to a duct fitted with a fan and a control damper. The duct must be controlled to ensure it only works when the unit is running.
  • Page 89 2 Unit installation The outdoor air inlet duct resistance is indicated in the following figure. Use as a guide for fan selection. : installation of the junction box on one side. (*1) : installation of the junction box on both sides. (*2) ...
  • Page 90 2 Unit installation Electrical Box Suspension Band (Field-Supplied) Fresh Air Fresh Air Indoor Unit Indoor Unit (Total Heat (Total Heat Exchanger) Exchanger) Fresh Air Intake Kit Flexible Duct (φ150) (Field-Supplied) View from P Dimension Model 1.0 - 2.5 3.0 - 6.0 The outdoor air inlet duct resistance increases as indicated in the following figure when using the T-duct connection.
  • Page 91 2 Unit installation For RCI-FSN3Ei indoor units: TKCI-232 The T-duct connection is designed for easier connections between the outdoor air inlet and the connection duct. The T-duct connection can only be installed when using the outdoor air inlet kit (optional) or the filter box (optional). RCI unit with T-duct connection.
  • Page 92 2 Unit installation  Branch pipe (PDF 23C3, PDF 46C3) If there are obstacles such as partitions inside the room that prevent the air from circulating correctly, branches can be installed to provide an even air temperature. Suitable return air grilles must be installed in line with the volume of return air.
  • Page 93 2 Unit installation Fit enough insulation to the connection between the pipe and the main body of the indoor unit and to the connection between the duct and the pipe. Use a set of three-way outlet parts (optional parts) and completely block the air outlet on the branched duct side of the panel (to avoid condensation and direct the air towards the branched duct).
  • Page 94 2 Unit installation Install the interlock plates as indicated in the figure. Blocking Plate Indoor Unit Insulation Electrical Box Panel *Sheet Sheet Panel Path for Fresh Air Intake Drain Pan Drain Pan Blocking Plate View from B *Do not attach the sheet to the indoor unit insulation and the panel.

  • Page 95: Filters

    2 Unit installation 2.11.2 Filters  Filter box For RCI-FSN3 indoor units: B-160H2 The dimensions of the filter box are shown in the following figure. Corner Frame (Opening Dimension) (Galvanized Steel Plate) Packing (EPDM) U-Shaped Hook (2 Portions) Filter Holder (Resin) Insulation (Polyethylene)
  • Page 96 2 Unit installation For RCI-FSN3Ei indoor units: B-23H4 The dimensions of the filter box are shown in the following figure. When the filter box is installed, the total height of the unit increases by approximately 85 mm. Therefore, pay attention to the installation space.
  • Page 97 2 Unit installation  Anti-bacteria filter For RCI-FSN3 indoor units: F-160L-K The dimensions of the long-lasting anti-bacteria filter are shown in the following figure. Long Hole Packing (Large) 2 Pieces (Reinforcement) Model Air Flow Direction Filter Colored Steel Plate Long Hole Packing (Small) To fit the filter, insert the tab on the suction grille into the large hole in the filter, as shown in the figure below.

  • Page 98: Specifications

    2 Unit installation For RCI-FSN3Ei indoor units: F-23L4-K The dimensions of the long-lasting anti-bacteria filter are shown in the following figure. To fit the filter, insert the tab on the suction grille into the large hole in the filter, as shown in the figure below. Model a (mm) RCI-(1.5-2.5)FSN3Ei...
  • Page 99 2 Unit installation  Deodorising filter For RCI-FSN3 indoor units: F-71L-D1 and F-160L-D1 The dimensions of the deodorising filter are indicated in the following figure. Remember that the filter thickness depends on the model. 2 Pieces (Reinforcement) Model Filter Aluminum Frame FLOW Air Flow Direction...
  • Page 100 2 Unit installation Specifications Part F-71L-D1 F-160L-D1 Applicable indoor unit model 1.0 to 2.5 3.0 to 6.0 Dust collection efficiency (%) 50 (gravimetric method) Air flow rate (m /min) 22.0 35.0 Initial pressure loss Pa 19.0 36.0 Final pressure loss Pa 48.0 78.0 Filter/frame colour...
  • Page 101 2 Unit installation Specifications Part RCI-(1.0-2.5) F-23L4-D RCI-(3.0-6.0) F46-L4D Dust collection efficiency (%) 50 (gravimetric method) Air flow rate (m /min) 20.0 37.0 Initial pressure loss Pa (mmAq) 15.7 (1.6) 16.7 (1.7) Final pressure loss Pa (mmAq) 42.2 (4.3) 33.3 (3.4) Working life 3 years (with maintenance every 3-6 months) Reuse...
  • Page 102 2 Unit installation SMGB0077 rev.0 - 01/2013...

  • Page 103: Piping Work And Refrigerant Charge

    3 Piping work and refrigerant charge P i p i n g w o r k a n d r e f r i g e r a n t c h a r g e Index 3.1. Refrigerant pipe selection........................92 3.1.1.

  • Page 104: Refrigerant Pipe Selection

    3 Piping work and refrigerant charge 3.1 Refrigerant pipe selection 3.1.1 Refrigerant pipe selection N O T E Consult the corresponding Technical Catalogue for outdoor units from the UTOPIA or SET FREE Series.  Pipe size selection Select the pipe size in line with the following instructions: 1 Between the outdoor unit and the branch pipe (multikit): select the same pipe connection size as for the outdoor unit.

  • Page 105: Copper Pipes, Sizes, Connection And Insulation

    3 Piping work and refrigerant charge 3.2 Copper pipes, sizes, connection and insulation 3.2.1 Copper pipes and sizes C A U T I O N • The copper pipe used in the refrigeration installations is different to the copper pipe used in installations carrying domestic or heating water.

  • Page 106: Pipe Connection

    3 Piping work and refrigerant charge 3.2.2 Pipe connection End of refrigerant pipe protected correctly. Cover the end of the pipe appropriately when it is to be inserted through holes in walls and roofs, etc. Keep the ends of the pipes covered while other installation work is being carried out to avoid the entry of dampness or dirt.

  • Page 107: General Instructions On The Installation Of Refrigerant Pipes

    3 Piping work and refrigerant charge 3.3 General instructions on the installation of refrigerant pipes The copper pipe used for the installation must be specific for refrigeration systems as is indicated in section Copper pipes and sizes. The diameter of the refrigerant pipes depends directly on the power of the outdoor unit. The pipe diameter allocated must be respected, in line with the instructions given in chapter Refrigerant pipe selection.

  • Page 108: Copper Refrigerant Pipe

    3 Piping work and refrigerant charge 3.4 Copper refrigerant pipe 3.4.1 Three principles on work with refrigerant pipes The basic refrigerant pipe installation work must be carried out paying particular attention to avoid the infiltration of humidity or dust while working with the refrigerant piping. Otherwise, rust may appear inside the system or the units and cause serious faults.

  • Page 109: Diameters Of The Copper Refrigeration Pipes

    3 Piping work and refrigerant charge 3.4.3 Diameters of the copper refrigeration pipes Nominal diameter Thickness mm Supply Inches Ø6.35 0.80 Roll Ø9.52 0.80 Roll Ø12.70 0.80 Roll Ø15.88 1.00 Roll Ø19.05 1.00 Pipe Ø22.20 1.00 Pipe Ø25.40 1.00 Pipe Ø28.60 1-1/8 1.00...
  • Page 110 3 Piping work and refrigerant charge Cutting Define the necessary length of pipe and add a few more centimetres to give yourself enough margin in case the cut has to be repeated. Cut the pipe using a pipe cutter. C A U T I O N Ensure the pipe cutter rollers remain perfectly seated on the copper pipe.

  • Page 111: Bending Copper Pipes

    3 Piping work and refrigerant charge 3.4.5 Bending copper pipes Where the refrigerant pipes are to be bent, always use a bending tool or a spring, both of a diameter that is adapted to the pipe to be bent. The bending radii must be as wide as possible so that the gas or liquid refrigerant flow is not altered and no circulation noise is generated during operation.

  • Page 112: Flared Connection Mounting

    3 Piping work and refrigerant charge 1. Heat the outer pipe previously to ensure the filler metal flows more easily. 2. Heat the inner pipe evenly. 3. Rubber cap. 4. Valve with no packing. 5. High pressure pipe. 6. 0.03 to 0.05 MPa (0.3 to 0.5 kg/cm 7.

  • Page 113: Refrigerant Pipe Insulation

    3 Piping work and refrigerant charge 3.4.8 Refrigerant pipe insulation The refrigerant circulates through the pipes at a very low temperature (several degrees below zero, depending on the time of year and the installation). The difference in temperature with the ambient air is extremely large and causes two significant phenomena to be taken into account: •...

  • Page 114: Refrigerant And Drain Hose Installation

    3 Piping work and refrigerant charge 3.5 Refrigerant and drain hose installation  General notes Dimensions of the flare and thickness of the copper pipe Nominal diameter Thickness Measurement A - 0.4 mm inches Ø6.35 0.80 Ø9.52 0.80 13.2 Ø12.70 0.80 16.6 Ø15.88...

  • Page 115: Drain Pipe Installation

    3 Piping work and refrigerant charge Gas pipe connection Liquid pipe connection (mm) φ30 mm (in) Liquid piping Gas piping RCI-(1.0/1.5)FSN3 Ø 12.70 (1/2) Ø 6.35 (1/4) RCI-2.0FSN3 Ø 15.88 (5/8) RCI-(2.5-6.0)FSN3 Ø 9.52 (3/8)  Drain pipe installation The position of the drain pipe connection is shown below (mm) Prepare a polyvinyl chloride pipe with a 32mm outer diameter.

  • Page 116: Rci - 4-Way Cassette (1.0-6.0)Fsn3Ei

    3 Piping work and refrigerant charge The drain piping must be performed with a down-slope pitch of 1/25 to 1/100. Ceiling Hose band 1 to 1.5m S u p p o r t a (Max. 300mm) (accessory) part 1/25 to 1/100 Down-slope Drain hose (accessory) Do not apply excessive force to the Drain Pipe connection.
  • Page 117 3 Piping work and refrigerant charge Models (1) Gas pipe mm (inches) (2) Liquid pipe mm (inches) RCI-(1.0/1.5)FSN3Ei Ø12.70 (1/2) Ø6.35 (1/4) RCI-2.0FSN3Ei Ø15.88 (5/8) RCI-(2.5–6.0)FSN3Ei Ø9.52 (3/8)  Drain pipe installation The correct position for the drain hose connection -A- is shown below. Prepare a polyvinyl chloride (PVC) pipe with an outer diameter of 32 mm.

  • Page 118: Rcim-4-Way Cassette (Compact) (0.8-2.0)Fsn2

    3 Piping work and refrigerant charge 3.5.3 RCIM-4-way cassette (compact) (0.8-2.0)FSN2  Refrigerant pipe installation The correct position for the gas refrigerant pipe connection is shown below. The pipe connection must be accessible from all directions (above, left or right). Models (1) Gas pipe mm (inches) (2) Liquid pipe mm (inches)

  • Page 119: Rcd - 2-Way Cassette (1.0-5.0)Fsn2

    3 Piping work and refrigerant charge Consider the following sizes: a + b + c ≤ 780 mm. Clamp (accessory) Do not use adhesive 4% (1/25) - 1% (1/100) Drain pipe (accessory) Clamp (accessory) Do not use adhesive Drainage pipe connection PVC pipe Ø...

  • Page 120: Rpc - Ceiling Type (2.0-6.0)Fsn2E

    3 Piping work and refrigerant charge  Drain pipe installation The correct position for the drain hose connection is shown below. Prepare a polyvinyl chloride (PVC) pipe with an outer diameter of 32 mm. Secure the pipe with the clamp and adhesive supplied. The drain hose must have a gradient of 1% (1/100) to 4% (1/25).
  • Page 121 3 Piping work and refrigerant charge Models (1) Gas pipe mm (inches) (2) Liquid pipe mm (inches) RPC-2.0FSN2E Ø6.35 (1/4) Ø15.88 (5/8) RPC-(2.5–6.0)FSN2E Ø9.52 (3/8) The piping must be installed from the bottom of the unit. 1 Remove the air inlet grille and slide the buttons on the grille backwards. Slide Knob 2 Open the air inlet grille...
  • Page 122 3 Piping work and refrigerant charge 5 Install the pipes through it and seal them using the insulation supplied, as indicated below. Rear side. Open the Knockout hole Seal piping. *145 Sealing plate supplied (0.8x118x142 mm) Gas refrigerant pipe Liquid refrigerant pipe Seal with insulation Sec.
  • Page 123 3 Piping work and refrigerant charge  Drain pipe installation N O T E The normal direction for connecting the drain hose is on the right side (when the unit is seen from the outlet grille side). The connection can be made from the left side if there are construction elements of the building around it. Connection on the right-hand side 1 Insert the drain hose in the clamp “A”.
  • Page 124 3 Piping work and refrigerant charge 6 Place the insulating material around the drain connection. Sealing material Drain hose connection The correct position for the drain hose connection is shown below. Insulating material: Drain pipe Prepare a polyvinyl chloride (PVC) pipe with an outer diameter of (field-supplied) 26 mm.

  • Page 125: Rpi - Ducted Indoor Unit (0.8-1.5)Fsn4E

    3 Piping work and refrigerant charge 3.5.6 RPI - Ducted indoor unit (0.8-1.5)FSN4E  Refrigerant pipe installation The correct position for the gas refrigerant pipe connection is shown below. Gas piping connection Liquid piping connection Drain piping Models Gas pipe mm (inches) Liquid pipe mm (inches) Ø12.7 (1/2) Ø6.35 (1/4)

  • Page 126: Rpi - Ducted Indoor Unit (2.0-6.0)Fsn4E

    3 Piping work and refrigerant charge Prepare a polyvinyl chloride (PVC) pipe with an outer diameter of 32 mm. Fasten the tubing to the drain hose with an adhesive and the factory-supplied clamp. The drain piping must be performed with a down-slope pitch of 1/25 to 1/100.
  • Page 127 3 Piping work and refrigerant charge Models Gas pipe mm (inches) Liquid pipe mm (inches) RPI-2.0FSN4E Ø6.35 (1/4) RPI-(2.5/3.0)FSN4E Ø15.88 (5/8) Ø9.52 (3/8) RPI-(4.0-6.0)FSN4E N O T E When installing the pipes, leave enough space for maintenance work in the electrical box of the unit. ...

  • Page 128: Rpi- Ducted Indoor Unit (8.0/10.0)Fsn3E

    3 Piping work and refrigerant charge Connect a trap to the drain hose at the angle indicated, as indicated in the figure (for RPI-(8.0/10.0)FSN3E). > 75 mm 4% (1/25) - 1% (1/100) Indoor unit NOTE If the relative humidity of the inlet air or the ambient air exceeds 80% in the place where the unit is installed, fit an auxiliary drain pan (field-supplied) below the indoor unit, as indicated in the figure.
  • Page 129 3 Piping work and refrigerant charge NOTE When installing the pipes, leave enough space for maintenance work in the electrical box of the unit.  Drain pipe installation For condense draining, prepare a polyvinyl chloride pipe with a Ø25mm (outer diameter). Fasten the field supplied pipe to the drain hose with adhesive.

  • Page 130: Rpim - Ducted Indoor Unit (0.8-1.5)Fsn4E(-Du)

    3 Piping work and refrigerant charge 3.5.9 RPIM - Ducted indoor unit (0.8-1.5)FSN4E(-DU)  Refrigerant pipe installation The pipe connections are inside the unit. Access the refrigerant pipe connection by removing the fan cover on the unit. Electrical box Pipe connection Lower panel The correct position for the refrigerant pipe connection is shown below.
  • Page 131 3 Piping work and refrigerant charge Connect a trap to the drain hose at the angle indicated, as indicated in the figure. > 75 mm 4% (1/25) - 1% (1/100) Indoor unit NOTE If the relative humidity of the inlet air or the ambient air exceeds 80% in the place where the unit is installed, fit an auxiliary drain pan (field-supplied) below the indoor unit, as indicated in the figure.

  • Page 132: Rpk - Wall Type (0.8-4.0)Fsn(H)3M

    3 Piping work and refrigerant charge Kit installation: Drain pump Drain hose Drain pan Fan cover 1 Fan cover 2 Maximum water head height in case of units with drain pump (-DU models or units with drain up mechanism kit). RPIM 1/25~1/100 Indoor unit...
  • Page 133 3 Piping work and refrigerant charge Direction of piping connection Direction of piping connection is shown in the figure below. Right side of indoor unit Left side of indoor unit Right side piping Rear side piping Bottom side piping Left side piping •...
  • Page 134 3 Piping work and refrigerant charge N O T E For RPK-(0.8-1.5)FSN(H)3M, it is recommended to connect the piping at the right rear side of the body to avoid the sound from the refrigerant running through. Exterior contour for indoor unit Unit: mm Liquid piping Model...
  • Page 135 3 Piping work and refrigerant charge Exterior contour for indoor unit Unit: mm Model ØD RPK-(0.8-1.5)FSN(H)3M RPK-(2.0-4.0)FSN3M Drain pipe connection (VP16) Hole for rear side piping (φ D) When the left side drain piping connection is performed, remove the cap of left side drain pipe, and then attach this cap to the right side drain pipe in order to change drain piping connection from right side to left side.

  • Page 136: Rpf(I)-Floor Type (1.0-2.5)Fsn2E

    3 Piping work and refrigerant charge C A U T I O N • Pay attention not to splash water to the electrical parts such as the fan motor or thermistors. • When the common drain piping is connected with other indoor units, the connected position of each indoor unit must be higher than the common piping.

  • Page 137: Refrigerant Charge

    3 Piping work and refrigerant charge 3.6 Refrigerant charge N O T E For matters relating to the refrigerant charge in the installation, consult the Technical Catalogue and Service Manual corresponding to the outdoor units of the UTOPIA or SET FREE systems. SMGB0077 rev.0 - 01/2013...

  • Page 138: Precautions In The Event Of Refrigerant Leaks

    3 Piping work and refrigerant charge 3.7 Precautions in the event of refrigerant leaks D A N G E R Fitters and the designers of the installations must strictly observe local and national legislation, and local codes regarding safety requirements in the event of refrigerant leaks. 3.7.1 Maximum permissible concentration of hydrofluorocarbon (HFC) The R410A refrigerant gas, used in the equipment, is non-flammable and non-toxic.

  • Page 139: Electrical Wiring

    4 Electrical wiring E l e c t r i c a l w i r i n g Index 4.1. Unit electrical wiring and connection ....................128 4.1.1. Wiring and main switch selection ......................128 4.1.2. Electrical connection of RCI units ......................129 4.1.3.

  • Page 140: Unit Electrical Wiring And Connection

    4 Electrical wiring 4.1 Unit electrical wiring and connection 4.1.1 Wiring and main switch selection Minimum size of the power supply cable wires N O T E • Follow local code and regulations to select the installation cables. • The maximum current value is used to calculate the size of the cables in line with European Standard EN60 335-1. Use normal, flexible coated neoprene (polychloroprene) cables (code H05RN-F) with a diameter no less than that indicated in the table.

  • Page 141: Electrical Connection Of Rci Units

    4 Electrical wiring Type of main switch Select the main switch according to the following table: Model Power source Maximum current (A) CB (A) (nº poles/A/mA) (mm2) All indoor units (*) KPI-252E3E KPI-502(E/H)3E KPI- 502X3E KPI-802(E/H)3E KPI- 1~ 230V50Hz 2/40/30 802X3E KPI-1002(E/H)3E KPI- 1002X3E...
  • Page 142 4 Electrical wiring Follow the steps below to connect the remote control cable or the optional extension wire: 1 Pass the cable through the knockout hole in the cabinet. 2 Connect the cable to terminals A and B of the terminal strip (TB1).
  • Page 143 4 Electrical wiring  For RCI-FSN3Ei Part Electrical box Stop (metal) Power supply, signal and remote control wiring Screw Printed circuit board (PCB) Terminal strip (TB2) Earthing screw Terminal strip (TB1) Printed circuit board (PCB) Power supply wiring and signal wiring between the outdoor and indoor unit Remote control wiring Communication wiring between the indoor and...

  • Page 144: Electrical Connection Of Rcim Units

    4 Electrical wiring Test runs C A U T I O N • Be careful during the test runs, as some of the safety functions remain disabled: the units operate for two hours without switching off via the thermostat. The three-minute compressor protection is not enabled during the test.
  • Page 145 4 Electrical wiring Follow the steps below to connect the remote control cable or the optional extension wire: 1 Pass the cable through the knockout hole in the cabinet. 2 Connect the cable to terminals A and B of the terminal strip (TB1). 3 Tighten the screw on terminals A and B.

  • Page 146: Electrical Connection Of Rcd Units

    4 Electrical wiring Nº Part Terminal box (TB1) Terminal box (TB2) Outlet air thermistor Connector for the swing louver motor Printed circuit board (PCB) Earthing screw Remote control wiring Communication wiring Power wiring Nº Part Cord clamp Remote control switch cable Transmission wiring (outdoor unit to indoor unit and viceversa) Test runs...
  • Page 147 4 Electrical wiring C A U T I O N • Risk of fire: cables must never touch the refrigerant pipes, printed circuit boards (PCB), sharp edges or elec- trical components inside the unit to avoid damaging them. • Loose connection terminals may lead to cable and terminal overheating. The unit may operate incorrectly, leading to a risk of fire. Check that the cables are firmly secured to the connection terminals. Electrical connection Check that the power supply for the RCD indoor unit is 220 - 240 V.
  • Page 148 4 Electrical wiring Nº Part Connector for the swing louver motor Fan motor connector Terminal strip (TB2) Terminal strip (TB1) Wiring Power wiring Follow the steps below to connect the earth wire to the earth connection in the electrical box: 1 Where necessary, loosen the screw on the earthing connection in the electrical box.

  • Page 149: Electrical Connection Of Rpc Units

    4 Electrical wiring Test runs C A U T I O N • Be careful during the test runs, as some of the safety functions remain disabled: the units operate for two hours without switching off via the thermostat. The three-minute compressor protection is not enabled during the test. •...
  • Page 150 4 Electrical wiring Follow the steps below to connect the communication cables between the outdoor and indoor unit to the terminal strip (TB): 1 Where necessary, loosen the screws on terminals 1 and 2 on the terminal strip (TB). 2 Connect the communication cables to terminals 1 and 2. 3 Tighten the screw on terminals 1 and 2.

  • Page 151: Electrical Connection Of Rpi Units

    4 Electrical wiring 4.1.6 Electrical connection of RPI units Work prior to the electrical connection 1 Turn off the power supply switches before starting work and fit the appropriate locks and safety warnings. 2 Wait 5 minutes after turning off the power supply switches. 3 Check that the fans on the indoor and outdoor units are at a standstill before starting work.
  • Page 152 4 Electrical wiring Follow the steps below to connect the remote control cable or the optional extension wire: 1 Pass the cable through the knockout hole in the cabinet. 2 Connect the cable to terminals A and B of the terminal strip (TB).
  • Page 153 4 Electrical wiring RPI-(2.0-6.0)FSN4E. Terminal board connections Nº Part Printed circuit board 1 (PCB1) Printed circuit board 2 (PCB2). Terminal board (TB) RPI-(8.0/10.0)FSN3E Terminal board connections Nº Part PCB1 Printed circuit board. PCB2 Printed circuit board. Transformer. Terminal strip. FUSE Fuse SMGB0077 rev.0 - 01/2013...

  • Page 154: Electrical Connection Of Rpim Units

    4 Electrical wiring Test runs C A U T I O N • Be careful during the test runs, as some of the safety functions remain disabled: the units operate for two hours without switching off via the thermostat. The three-minute compressor protection is not enabled during the test. •...
  • Page 155 4 Electrical wiring Electrical connection Check that the power supply for the RPIM indoor unit is 230 V. If not, replace connectors CN on the TF transformers in the electrical box. N O T E The service access panel for the indoor unit fan motor is at the bottom of the unit. Remove the service access panel.
  • Page 156 4 Electrical wiring Cover the cables and the hole using a sealant to protect them from condensation and insects. Electrical box Bottom side view Electrical box Nº Part Printed circuit board 1 (PCB1) Printed circuit board 2 (PCB2) Terminal board (TB) Test runs C A U T I O N •...

  • Page 157: Electrical Connection Of Rpk Units

    4 Electrical wiring 4.1.8 Electrical connection of RPK units Work prior to the electrical connection 1 Turn off the power supply switches before starting work and fit the appropriate locks and safety warnings. 2 Wait 5 minutes after turning off the power supply switches. 3 Check that the fans on the indoor and outdoor units are at a standstill before starting work.
  • Page 158 4 Electrical wiring 2 Connect the control cables between the indoor unit and the outdoor unit correctly. Check to ensure that the terminal for power source cable (Terminals “L1” to “L1” and “N” to “N” of each terminal board: AC220-240V) between the indoor unit and the outdoor unit coincide correctly.
  • Page 159 4 Electrical wiring N O T E In case of using optional wired remote control switch (PC-ARF) or optional receiver Kit (PC-ALHZF) The following setting is required when the optional wired remote control switch (PC-ARF) or the optional receiver kit (PC-ALHZF) is used. • The setting before shipment is “Wireless”.

  • Page 160: Electrical Connection Of Rpf(I) Units

    4 Electrical wiring Test runs C A U T I O N • Be careful during the test runs, as some of the safety functions remain disabled: the units operate for two hours without switching off via the thermostat. The three-minute compressor protection is not enabled during the test.
  • Page 161 4 Electrical wiring Open the front and side panels. N O T E To prevent the screws from falling from the terminal box, • do not remove them completely, hold onto the terminal and check that the screw is secure through the hole in the terminal.

  • Page 162: Electrical Connection Of Kpi Units

    4 Electrical wiring Test runs C A U T I O N • Be careful during the test runs, as some of the safety functions remain disabled: the units operate for two hours without switching off via the thermostat. The three-minute compressor protection is not enabled during the test.

  • Page 163: Dx-Interface Electrical Wiring

    4 Electrical wiring C A U T I O N If the power cables are to be connected in series, check that the current is below 50 A. Follow the steps below to connect the power cables to the power terminals in the electrical box: 1 Where necessary, loosen the screws on the power terminals in the electrical box.
  • Page 164 4 Electrical wiring  Control box terminal board DX-Interface EXV-(2.0-10.0)E1 Terminal board 1 Terminal board 2 N O T E (*) Packing gland for thermistor installation SMGB0077 rev.0 - 01/2013...
  • Page 165 4 Electrical wiring  Expansion valve box terminal board DX-Interface EXV-(2.0-10.0)E1 Exp. valve  Terminal board connections and remarks Terminal board 1 Wire and maximum current Mark Item Name Description specification (EN60335-1) DUTY V: Duty control by voltage (0~10V) (0~5V) (optional): V+: Output power to device (+24Vdc) Wire section: 3x0,5mm2 ...
  • Page 166  A drain water pump (field supplied) can be connected to DX-kit interface. Wire section: 2x0,75mm2 FAN CONTROL: Fan tap speed control by HITACHI remote controller (optional): Maximum current N-Neutral phase connection (common) allowed: 3,5A H: High fan speed signal ...

  • Page 167: Network System Connection (Cs-Net Web)

    4 Electrical wiring 4.1.12 Network system connection (CS-NET WEB) PC-ART / PC-ARF PC-ART / PC-ARF PC-ART / PC-ARF CS NET WEB SMGB0077 rev.0 - 01/2013...

  • Page 168: Connection Between Units H-Link And H-Link Ii

    4 Electrical wiring 4.1.13 Connection between units H-LINK and H-LINK II FSN3Ei FSN3Ei For mixed H-LINK and H-LINK II systems, set the H-LINK units in the first 16 positions of the system, as shown in the following figure. There are 26 systems with FSN(2/3/4)E indoor units. N O T E •...

  • Page 169: Setting Of Dip Switches And Rsw Switches

    4 Electrical wiring 4.2 Setting of DIP switches and RSW switches 1 Turn off the power supply before setting the DIP switches. Otherwise, the switch settings are invalid. 2 To set the position of the RSW rotary switches, insert a screwdriver into the groove of the RSW. N O T E The DIP and RSW switches of each indoor and outdoor unit must be set, although they do not all have to be set.

  • Page 170: Location Of Dip Switches And Rsw Switches

    4 Electrical wiring 4.2.1 Location of DIP switches and RSW switches Location of DIP switches and RSW rotary switches • RCI-(1.0-6.0)FSN3 units DSW7 DSW4 DSW5 RSW2 1 2 3 4 1 2 3 4 5 6 1 2 3 4 5 6 1 2 3 4 5 6 DSW3 DSW9...
  • Page 171 4 Electrical wiring RPI-(8.0/10.0)FSN3E units • • RPK-(0.8-1.5)FSN(H)3M units • RPK-(2.0-4.0)FSN3M units • KPI-(252-2002)(E/H)3E and KPI-(502-1002)X3E units PCB1 PCB2 SMGB0077 rev.0 - 01/2013...

  • Page 172: Functions Of The Dip Switches And Rsw Switches

    4 Electrical wiring • DX-Interface PCB1 PCB2 4.2.2 Functions of the DIP switches and RSW switches C A U T I O N Turn off the power supply before setting the DIP switches. If not, the settings will not be valid. N O T E •...
  • Page 173 4 Electrical wiring Setting position Setting position 10.0 Setting position DSW4 switch: unit model code setting (except RPK-(0.8-4.0)FSN(H)3M units) This is used to set the model code corresponding to the type of indoor unit C A U T I O N Do not set the DSW4 switch, as it is factory-set prior to delivery.
  • Page 174 4 Electrical wiring Setting position (DSW6) Setting position (RSW1) Example for number 16 DSW7 switch: Fuse recovery and remote control selection No settings are required. All switches are factory-set to OFF. PC-ART remote control selection. If a high voltage is applied to TB1 terminals 1 and 2, the fuse on PCB1(M) is deactivated. Should this occur, correct the TB1 wiring and activate contact 1.
  • Page 175 4 Electrical wiring DSW6 switch / RSW1 rotary switch: Unit no. setting Set DSW6 and RSW1 to modify the indoor unit address. The setting must be made so that it does not overlap the setting of other indoor units in the same refrigerant cycle. If the setting is not made manually, the automatic address function will be enabled. Setting position (DSW6) Setting position (RSW1) Tens setting (second digit)
  • Page 176 4 Electrical wiring PCB2 settings DSW1: Optional functions Factory setting 1 2 3 4 5 6 Pin 7: Common operation of remote control switch 1 2 3 4 5 6 C A U T I O N If there is an indoor unit connected in the same RCS line as DX-Interface EXV-(2.0-10.0)E1 or KPI-(E/H/X)3E, then pin 7 must be ON to disable the power supply to RCS line.
  • Page 177 4 Electrical wiring DSW5 and RSW2: Refrigerant cycle No. setting Setting is required. This switch is used to set the refrigerant cycle number Setting Position (DSW5) Setting position (RSW2) Tens setting (second digit) Unit setting (first digit) Example for number 6 DSW6 and RSW1: Unit No.
  • Page 178 4 Electrical wiring PCB2 settings DSW1: Optional functions Factory setting 1 2 3 4 5 6 Discharge air control (Control by outlet temperature) 1 2 3 4 5 6 Switch 1 and 2: Capacity control setting Indoor air control (Control by inlet temperature) 1 2 3 4 5 6 External duty control (*1) 1 2 3 4 5 6...

  • Page 179: Wiring Diagrams For Indoor Units And Complementary Systems

    4 Electrical wiring 4.3 Wiring diagrams for indoor units and complementary systems 4.3.1 Wiring diagrams for indoor units  Wiring diagrams for the RCI-(1.0-6.0)FSN3 indoor units SMGB0077 rev.0 - 01/2013...
  • Page 180 4 Electrical wiring  Wiring diagrams for RCIM-(0.8-2.0)FSN2 SMGB0077 rev.0 - 01/2013...
  • Page 181 4 Electrical wiring  Wiring diagrams for the RCI-(1.0-6.0)FSN3Ei indoor units SMGB0077 rev.0 - 01/2013...
  • Page 182 4 Electrical wiring  Wiring diagrams for the RCD-(1.0-5.0)FSN2 indoor units SMGB0077 rev.0 - 01/2013...
  • Page 183 4 Electrical wiring  Wiring diagrams for the RPC-(2.0-6.0)FSN2E indoor units SMGB0077 rev.0 - 01/2013...
  • Page 184 4 Electrical wiring  Wiring diagrams for the RPI(M)-(0.8-6.0)FSN4E indoor units SMGB0077 rev.0 - 01/2013...
  • Page 185 4 Electrical wiring  Wiring diagrams for the RPI-(8.0/10.0)FSN3E indoor units SMGB0077 rev.0 - 01/2013...
  • Page 186 4 Electrical wiring  Wiring diagrams for the RPK-(0.8-1.5)FSN3M indoor units SMGB0077 rev.0 - 01/2013...
  • Page 187 4 Electrical wiring  Wiring diagrams for the RPK-(0.8-1.5)FSNH3M indoor units SMGB0077 rev.0 - 01/2013...
  • Page 188 4 Electrical wiring  Wiring diagram for the RPK-(2.0-4.0)FSN3M indoor unit SMGB0077 rev.0 - 01/2013...
  • Page 189 4 Electrical wiring  Wiring diagrams for the RPF(I)-(1.0-2.5)FSN2E indoor units SMGB0077 rev.0 - 01/2013...

  • Page 190: Wiring Diagrams For Complementary Systems

    4 Electrical wiring 4.3.2 Wiring diagrams for complementary systems  KPI-(252-2002)(E/H)2E energy / heat recovery unit and KPI-(502-1002)XE3 active unit SMGB0077 rev.0 - 01/2013...
  • Page 191 4 Electrical wiring  DX-Interface EXV-(2.0-10.0)E1 SMGB0077 rev.0 - 01/2013...
  • Page 192 4 Electrical wiring SMGB0077 rev.0 - 01/2013...

  • Page 193: Control System

    5 Control system C o n t r o l s y s t e m Index 5.1. Device control system ......................... 182 5.1.1. Printed circuit boards for RCI-FSN3 indoor units ..................184 5.1.2. Printed circuit boards for RCI-(1.0-6.0)FSN3Ei ..................185 5.1.3.

  • Page 194: Device Control System

    5 Control system 5.1 Device control system Purpose of control Cooling operation Heating operation Defrost mode Frequency control is determined Frequency control is determined with the following parameters: with the following parameters: • Difference between the • Difference between the air Fixed frequency (stop the air inlet temperature and inlet temperature and the...
  • Page 195 5 Control system Temp.: condenser temperature. Identifier Name Motor (for the compressor) Motor (for the indoor fan) MOF1, 2 Motor (for the outdoor fan) Motor (for the automatic louver) Electronic expansion valve Magnetic compressor contactor Crankcase heater Current transformer High pressure switch 4-way valve SVA, B, F Solenoid valve...

  • Page 196: Printed Circuit Boards For Rci-Fsn3 Indoor Units

    5 Control system 5.1.1 Printed circuit boards for RCI-FSN3 indoor units C A U T I O N Turn off the power supply before setting the DIP switches. If not, the settings will not be valid. N O T E •...

  • Page 197: Printed Circuit Boards For Rci-(1.0-6.0)Fsn3Ei

    5 Control system Connector indication CN36 Motor for drain discharge mechanism EFR1 PCB1 fuse EFS1 PCB1 fuse Not used Switch indication DSW3 Capacity code DSW4 Unit model code DSW5, RSW2 Refrigerant cycle number DWS6, RSW1 Indoor unit number settings DSW7 Fuse re-establishing DSW9 Not used...

  • Page 198: Printed Circuit Boards For Rcim-Fsn2 Indoor Units

    5 Control system Connector indication THM2 Air outlet thermistor THM3 Liquid pipe thermistor THM4 Not used THM5 Gas pipe thermistor Motor for fan indoor Terminal board Not used Not used Not used CN11 Expansion valve CN12 Air panel motor for auto-louver CN14 Float switch EFR1...
  • Page 199 5 Control system LED indicator This LED indicates the transmission status between the indoor unit LED1 and the remote control. This LED indicates the transmission status between the indoor unit LED3 Yellow and the outdoor unit. LED4 PCB power supply Connector indication PCN1 220-240V transformer...

  • Page 200: Printed Circuit Boards For Rcd Indoor Units

    5 Control system 5.1.4 Printed circuit boards for RCD indoor units C A U T I O N Turn off the power supply before setting the DIP switches. If not, the settings will not be valid. N O T E •...

  • Page 201: Printed Circuit Board For Rpc, Rpf(I), Units

    5 Control system Connector indication Optional output functions CN11 Expansion valve control CN14 Float switch CN17 Swing louver motor 4 CN201 PCB1 connection EFS1 PCB2 fuse EFR1 PCB2 fuse PCB1 fuse PCB1 fuse Switch indication DSW3 Capacity code DSW4 Unit model code DSW5, RSW2 Refrigerant cycle number DSW7...
  • Page 202 5 Control system Connector indication PCN3 Not used PCN5 Not used PCN6 Drain pump motor (RPI) PCN7 Power supply (1-R, 2-S, 3-N, 4-E) PCN8 Capacitor PCN10 Fan motor power supply PCN11 Fan motor speed control PCN301 Terminal board connections PCN302 PCB2 connection THM1 Air inlet thermistor...

  • Page 203: Printed Circuit Board For Rpi(M)-(0.8-6.0)Fsn4E

    5 Control system 5.1.6 Printed circuit board for RPI(M)-(0.8-6.0)FSN4E C A U T I O N Turn off the power supply before setting the DIP switches. If not, the settings will not be valid. N O T E • The symbol “■” indicates the position of the DIP switches. The figures show the setting before transmission or after selection.

  • Page 204: Printed Circuit Board For Rpi-(8.0/10.0) Fsn3E Units

    5 Control system Connector indication THM1 Air inlet thermistor THM2 Air outlet thermistor THM3 Liquid pipe thermistor THM4 Not used THM5 Gas pipe thermistor THU1 Not used Printed circuit board 2 Terminal board Not used Not used Not used Not used CN11 Expansion valve CN14...
  • Page 205 5 Control system LED indicator This LED indicates the transmission status between the indoor unit LED1 and the remote control. This LED indicates the transmission status between the indoor unit LED3 Yellow and the outdoor unit. LED4 Green PCB power supply Connector indication PCN1 220 V transformer...

  • Page 206: Printed Circuit Board For Rpk-Fsn(H)3M Units

    5 Control system 5.1.8 Printed circuit board for RPK-FSN(H)3M units  For RPK-(0.8-1.5)FSN(H)3M C A U T I O N Turn off the power supply before setting the DIP switches. If not, the settings will not be valid. N O T E •...
  • Page 207 5 Control system Connector indication CN10 Not used CN11 Micro-computer control expansion valve CN14 Not used CN17A Motor for automatic swing louver CN17B Not used CN18 Printed circuit board 2 CN19A Printed circuit board 2 CN19B Printed circuit board 2 Not used Switch indication DSW3...
  • Page 208 5 Control system LED indicator This LED indicates the transmission status between the indoor unit LED1 and the remote control. This LED indicates the transmission status between the indoor unit LED3 Yellow and the outdoor unit. LED4 Green PCB power supply Connector indication PCN500 PCN550...

  • Page 209: Printed Circuit Board For Kpi Complementary Systems

    5 Control system 5.1.9 Printed circuit board for KPI complementary systems C A U T I O N Turn off the power supply before setting the DIP switches. If not, the settings will not be valid. N O T E •...

  • Page 210: Printed Circuit Board For Dx-Interface Complementary Systems

    5 Control system PCB1 Connector indication Not used CN10 Not used CN11 Expansion valve CN14 Float switch CN17 Not used CN19 Not used EFR1 PCB1 fuse EFS1 PCB1 fuse Not used PCB1 fuse Not used PCB2 Connector indication PCN1 TB1 and PCB1 THM1 Coil inlet thermistor THM2...
  • Page 211 5 Control system PCB1 LED indicator This LED indicates the transmission status between the indoor unit LED1 and the remote control. This LED indicates the transmission status between the indoor unit LED3 Yellow and the outdoor unit. LED4 Green PCB power supply PCB2 LED indicator LED1 Yellow...
  • Page 212 5 Control system PCB2 Connector indication PCB2 fuse Switch indication DSW1 Optional functions DSW2 End resistance DSW3 Capacity code DSW4 Unit model code DSW5, RSW2 Refrigerant cycle number DWS6, RSW1 Indoor unit number settings DSW7 Fuse re-establishing SMGB0077 rev.0 - 01/2013...

  • Page 213: Safety Protection And Control

    5 Control system 5.2 Safety protection and control Compressor protection The compressor is protected by the following devices: • High pressure switch: this stops the compressor when the discharge pressure exceeds the set value. • Oil heater: this prevents oil from being lost during cold starts, as it is enabled while the compressor is at a standstill. Fan motor protection: internal thermostat located in the fan motor winding.

  • Page 214: Standard Control Functions

    5 Control system 5.3 Standard control functions 5.3.1 Freeze protection during the cooling or dehumidification process Cooling or Dry Operation Cooling or Dry Operation SMGB0077 rev.0 - 01/2013...

  • Page 215: Indoor Electronic Expansion Valve Control

    5 Control system 5.3.2 Indoor electronic expansion valve control 1 After supplying power, the electronic expansion valve closes fully before starting to open. 2 When the compressor stops, the electronic expansion valve closes fully to set its opening. 3 When it starts (the compressor is activated), the electronic ex- pansion valve opens to a specific degree during cooling ope- ration, 1 minute.

  • Page 216: Activation Of The Control With Protection Device

    5 Control system 5.3.3 Activation of the control with protection device Current of the Blow EHW fuse EHW circuit > 10A or >20A SMGB0077 rev.0 - 01/2013...

  • Page 217: Automatic Cooling/Heating Operation Control

    5 Control system 5.3.4 Automatic cooling/heating operation control 5.3.5 Preventive high-pressure increase control This function is used to avoid an abnormal condition (alarm: 02) when the outdoor air flow drops due to seasonal winds blowing against the air outlet. When CMC is enabled in cooling operation, PSC is enabled and Tc is greater than Tc1+4 °C, operations with forced thermostat disabling are started.

  • Page 219: Optional Functions

    6 Optional functions O p t i o n a l f u n c t i o n s Index 6.1. Indoor units............................208 6.1.1. Available ports ............................208 6.1.2. Optional signal configuration ........................210 6.1.3. Programming with remote control (PC-ART example) ................213 6.1.4.

  • Page 220: Indoor Units

    6 Optional functions 6.1 Indoor units 6.1.1 Available ports The system has eight optional input signals and six output signals. Both types of signal are programmed into the indoor unit PCB: connector CN3 for input signals and connectors CN7 and CN8 for output signals. Output connector CN7 has two ports and output connector CN8 has one port, which are used to configure three output options of the eight available in the system.
  • Page 221 6 Optional functions Indication Connections Manufacturer or Component Remarks specifications Reduced power relay model Voltage between the relay Auxiliary relay (X2) OMRON: MY1F or equivalent terminals 12 Vdc, 75 mA Voltage between the contactor Contact (SS1) (x1) (example) Manual type terminals 230 V, 5 mA Optional part PCC-1A (capable Five cables with connectors in...

  • Page 222: Optional Signal Configuration

    6 Optional functions 6.1.2 Optional signal configuration The following tables describe the optional signals available on indoor units. Optional signals are configured using the remote control, except for RPK-(0.8-4.0)FSN3M units in which they are configured using the DIP switches. Optional input signals (PC-ART example) N O T E If an input signal is set, the on-screen display on the remote control automatically changes to the following.
  • Page 223 6 Optional functions Indication Input signal Application Remote control screen (input signal) Port This signal controls the stoppage of the system from a remote location. Function 2: unit stoppage N O T E (by pulse) It is extremely practical in hotels and offices to control the indoor units from the building management system.
  • Page 224 6 Optional functions Optional output signals (PC-ART example) N O T E If an input signal is set, the on-screen display on the remote control automatically changes to the following. Indication Output signal Application Remote control screen (input signal) Port •...

  • Page 225: Programming With Remote Control (Pc-Art Example)

    6 Optional functions Indication Output signal Application Remote control screen (input signal) Port • This signal controls the status of the compressor. Heating signal It is extremely useful for • Only CN7 controlling the thermostat switched off on indoor units. units •...

  • Page 226: Description Of Optional Input Signals

    6 Optional functions Changing the optional signals and setting conditions In optional setting mode, the remote control indication changes as shown below: 1 The assigned port for the input signal and the output signal are displayed in the time indication segments for the timer setting. See the following table for the indicated port and the PCB connector of the indoor unit.
  • Page 227 6 Optional functions • Difference of over 1.5 degrees. • Do not use a mercury thermostat. • The remote control must remain connected to the unit. When the power supply is reconnected, start the unit by pressing the on button. The compressor will then run under the control of the field-supplied thermostat. All other functions are controlled in the normal manner via the remote control.
  • Page 228 6 Optional functions Cancellation of commands from the remote control after a forced stoppage On-screen display: 06. It is possible to stop the air conditioning systems using the signal from a building management system. In this case, the individual commands transmitted from the remote control are cancelled. Connect the wiring and use the materials as indicated in Available ports.

  • Page 229: Description Of Optional Output Signals

    6 Optional functions Control by use of a remote temperature sensor On-screen display: 08. The following functions are available when an optional remote temperature sensor is used: • The unit is controlled by the average temperature of the air inlet thermistor and the remote temperature sensor. •...
  • Page 230 6 Optional functions Cooling operation signal On-screen display: 03. This optional signal is used to pick up the cooling operation signal. Connect the wiring and use the materials as indicated in Available ports. N O T E The X2 auxiliary relay contact closes when the cooling operation signal is enabled, regardless of whether the thermostat signal is enabled or disabled.

  • Page 231: Complementary Systems

    6 Optional functions 6.2 Complementary systems 6.2.1 KPI Optional functions The following optional functions as shown in next table are available by setting of PC-ART. Contact your distributor or dealer of HITACHI for the detailed information. Where Code Function KPI-(E/H)3E...

  • Page 232: Dx-Interface

    6 Optional functions Where Code Function KPI-(E/H)3E KPI-X3E Setting Status Remarks 00:No setting 01:Room Thermo (Cooling) 02:Room Thermo (Heat) When Thermo ON/OFF input 03:Remote ON/OFF 1 (Contact) enabled (PCB2-DSW16=ON), CN3 1#-2# input 04: Remote ON/OFF 2 (Pulse) i1 optional signal is not 05:Remote ON/ available OFF2(Stoppage/Pulse)
  • Page 233 Once the PCB DSW has been set, the input “i1” of CN3 is automatically set for thermo-On / thermo-Off control. The setting of input “i2” is kept as set on the remote controller. Please refer to Hitachi Indoor Units Service Manual for further information about the setting and connection of the auxiliary inputs to CN3 socket.
  • Page 234 CN3 is automatically set for thermo-On / thermo-Off control. The setting of input “i2” is kept as set on the remote controller. Please refer to Hitachi Indoor Units Service Manual for further information about the setting and connection of the auxiliary inputs to CN3 socket.

  • Page 235: Remote Controls

    6 Optional functions 6.3 Remote controls 6.3.1 Optional remote control functions (PC-ART example) Programming and setting mode Check that the unit is stopped, if not switch it off. Press the OK and RESET buttons on the remote control at the same time for more than 3 seconds.

  • Page 236: List Of Optional Remote Control Functions

    6 Optional functions Selection of another indoor unit In optional function setting mode, press TEMP ▲ or TEMP ▼ on the remote control to select the indoor unit on which the optional function is to be set. 6.3.2 List of optional remote control functions Individual Element Optional function...
  • Page 237 6 Optional functions Individual Element Optional function Settings Condition setting Description setting Standard setting. No compensation Cooling temperature It decrease the This function is used to obtain longer compensation temperature -1ºC cooling periods. It decrease the temperature -2ºC – Not available Not available –...
  • Page 238 6 Optional functions Individual Element Optional function Settings Condition setting Description setting Not available Air temperature control using the remote control thermistor This function determines the Thermistor of remote control thermistor to control the air switch Air temperature temperature. control using the average value of the air inlet thermistor and the remote...
  • Page 239 6 Optional functions Individual Element Optional function Settings Condition setting Description setting 200 cm (Standard) 100 cm – 150 cm – 200 cm – Only PC-ARF: Fall distance of elevating panel 250 cm – 300 cm – 350 cm – 400 cm –...
  • Page 240 6 Optional functions Individual Element Optional function Settings Condition setting Description setting Not available Not available – Use at 00 conditions Not activated function This function reduces the unit fan Fan operation control at speed to reduce the spreading of cooling Thermo-OFF smells and humidity.
  • Page 241 6 Optional functions Individual Element Optional function Settings Condition setting Description setting 19 °C 20 °C 21-24 (21-24) °C This function is used to set automatic PC-ARF: Automatic reset 25 °C (factory temperature reset in FAN/COOL/DRY temperature for cooling setting) modes.
  • Page 242 6 Optional functions Individual Element Optional function Settings Condition setting Description setting Standard Lower limit +1 °C Lower limit +2 °C This function is used to define a lower Cooling lower limit for setting temperature setting limit for FAN/ Lower limit +(03- temperature 03-08 COOL/DRY modes.
  • Page 243 6 Optional functions Individual Element Optional function Settings Condition setting Description setting Not available Central control available after This function allows for central control forced stoppage after the forced stoppage of the unit. Available Not available PC-ARF: Not available – –...

  • Page 244: Description Of The Optional Remote Control Functions

    6 Optional functions In case that the set temperature is changed and kept within the set time at “F4”, the temperature is automatically changed to “F5” and “F6”. In case that the set temperature is out of range at “F5” and “F6”, it is applied within upper and lower limit for the set temperature.
  • Page 245 6 Optional functions b4 – Pre-determined filter cleaning period change This function is used to modify the period which the remote control indicates the air filter replacement. The filter cleaning period can be changed depending on the condition of the filter, as shown in the table below: N O T E The remaining number of hours before cleaning the filter is factory-set for all indoor unit models.
  • Page 246 6 Optional functions bC – Not available bd – Not available bE – Not available C1 – Not available C2 – Not available C3 – Not available C4 – Drain pump in heating mode This function is used to activate the drain pump in heating mode. C5 –...
  • Page 247 6 Optional functions C9 – Not available CA – Not available Cb – Selection of forced stoppage logic This function determines the operating logic for the forced stoppage contacts. The setting conditions and contact logic are shown in the following table: Setting condition Activation contact Setting...
  • Page 248 6 Optional functions d3 – Power supply ON/OFF 2 This function is used to restart the unit after a power cut taking more than 2 seconds. The standard unit starts automatically under the same operating conditions, such as the operating mode, etc. in the case of an electrical fault lasting for a maximum of 2 seconds.
  • Page 249 6 Optional functions E3 – Not available E4 – Pre-cooling / pre-heating period This function is useful to delay start-up of the total heat exchanger. E5 – Not available E6 – Indoor fan operation time after cooling operation stoppage This functions prevents the condensation accumulation in the unit by keeping the fan running after it is switched off. E7 –...
  • Page 250 6 Optional functions F3 – Automatic reset of setting temperature (PC-ARF) / Not available (PC-ART). However, the temperature configuration does not perform the automatic Reset when operating in Automatic COOL/HEAT mode or operations using the remote control for the central unit are forbidden. This function is used to economise the operation.
  • Page 251 6 Optional functions FC – Cooling lower limit for setting temperature This function is useful to set the temperature range in cooling mode. It enables the cooling range to be reduced for configuration using the remote control. An example is shown in the following figure: Fd –...

  • Page 252: Optional Functions For Pc-Arh Remote Controls

    6 Optional functions 6.3.4 Optional functions for PC-ARH remote controls Optional setting function 1 To access the optional setting mode with the unit at a standstill, press the MODE and FAN SPEED buttons at the same time for over 3 seconds until the image displayed on the screen changes: 2 Press TEMP▼...
  • Page 253 6 Optional functions Code Part Setting options 00: Operating mode change disabled (hide operating mode) (factory setting) Operating mode change restriction 01: Operating mode set by the central control unit + FAN mode 02: Unlimited operation 00: Air conditioning only Ventilation exchange 01: Ventilation only (total heat exchanger only)

  • Page 254: Optional Functions On Wireless Remote Controls

    6.3.5 Optional functions on wireless remote controls PC-ALH3 PC-ALHZF Secondary receiver setting To enable this setting, enable terminal 1 on the DIP switch.

  • Page 255: Test Run

    7 Test run Te s t r u n Index 7.1. Checks prior to the test run ......................... 244 7.1.1. Check points ............................244 7.1.2. Check procedure ............................. 244 7.2. Test procedure using the remote control ..................... 246 7.2.1. PC-ART remote control ........................... 246 7.2.2.

  • Page 256: Checks Prior To The Test Run

    7 Test run 7.1 Checks prior to the test run • Once installation is complete, carry out the test run in line with the procedure described below. The system can be handed over to the client once the test has been correctly completed. •...
  • Page 257 7 Test run 13 The operating temperature: • Cooling operation a. Indoor DB2 1.5 °C and higher. b. Indoor WB 16 °C and higher. c. Outdoor DB 0 °C and higher. • Heating operation a. Indoor DB27 °C and below. 14 Use shielded cables for the installation to avoid electrical noise.

  • Page 258: Test Procedure Using The Remote Control

    7 Test run 7.2 Test procedure using the remote control 7.2.1 PC-ART remote control Switch on the power supply to the indoor and outdoor units. Select the TEST RUN mode using the remote control: press MODE and OK buttons at the same time for more than 3 seconds. 1 If the indication TEST RUN or the counter number of the units connected to the control (e.g.

  • Page 259: Pc-Arf Remote Control

    7 Test run 6 Check the indication on the remote control: Indication on the remote Inspection points after swit- Unit status Fault control ching off the power supply a. Connection order each terminal board. The fuse on the PCB is likely to have been disa- bled during a incorrect wiring.
  • Page 260 7 Test run Test Run Setting: 2 units COOL MODE SPEED Select “Test Run” and press “OK”. The test run settings will be LOUV. displayed. T-RUN TIME 120MIN SEL. RTN. Test Run Setting: 00 unit COOL MODE N O T E SPEED LOUV.
  • Page 261 7 Test run Test Run: 2 units MODE COOL (9) To finish the test run, press “ ” (run/stop) again or pass over the SPEED set test run time. When changing the test run time, press “ ” or “ ” to LOUV.

  • Page 262: Test Procedure Using The Wireless Remote Control

    7 Test run 7.3 Test procedure using the wireless remote control 7.3.1 PC-LH3A / PC-LH3B wireless remote control N O T E The test run cannot be carried out using the wireless remote control if the remote control is being used or if se- veral units (SET-FREE and UTOPIA series) are running at the same time.

  • Page 263: Test Run Check List

    7 Test run 7.4 Test run check list MODEL: SERIAL NO. COMPRESSOR MFG NO NAME AND ADDRESS OF CUSTOMER: DATE: 1 Does the indoor unit fan turn in the correct direction? __________ 2 Has the unit been running for at least twenty (20) minutes? __________ 3 Check the temperature of the room: Inlet: DB/WB _____°C...
  • Page 264 7 Test run SMGB0077 rev.0 - 01/2013...

  • Page 265: Troubleshooting

    8 Troubleshooting T r o u b l e s h o o t i n g Index 8.1. Self-check of the indoor unit PCB (for RPK only) - Preliminary information ........254 8.2. Electronic expansion valve check procedure ..................255 8.3.

  • Page 266: Self-Check Of The Indoor Unit Pcb (For Rpk Only) - Preliminary Information

    8 Troubleshooting 8.1 Self-check of the indoor unit PCB (for RPK only) - Preliminary information • Self-check procedure using indoor PCB relays. To check faults on the indoor unit PCB due to malfunctioning. To check faults on the indoor unit PCB according to the results of the self-check using the CHECK button on the remote control and the auto-control function.

  • Page 267: Electronic Expansion Valve Check Procedure

    8 Troubleshooting 8.2 Electronic expansion valve check procedure Valve position Electronic expansion valve Check the temperature of the piping in the heating process. Failu- Locked fully closed re of the temperature to rise indicates a fault. Locked slightly open The following conditions indicate a fault: •...

  • Page 268: Procedure For Checking Fan Motors In Indoor Units

    Name and abbreviation of the cable colours used: Black Brown Yellow Green Blue Grey Orange White Power Indoor units Wiring diagram Cable no. Resistance (Ω) output RCI-1.0FSN3 RCI-1.5FSN3 RCI-2.0FSN3 57 W DC motor — — RCI-2.5FSN3 RCI-3.0FSN3 RCI-4.0FSN3 RCI-5.0FSN3 127 W DC MOTOR — —...
  • Page 269 8 Troubleshooting Power Indoor units Wiring diagram Cable no. Resistance (Ω) output 59.90 BLK1-2RED 16.90 RPC-2.0FSN2E RED2-3YEL 15.80 RPC-2.5FSN2E 65 W YEL3-4GRY 15.80 RPC-3.0FSN2E GRY4-5BLU 63.60 RED2-6WHT to 20 °C 32.10 BLK1-2RED RPC-4.0FSN2E 24.50 RED2-3YEL RPC-5.0FSN2E 180 W 24.50 YEL3-4GRY RPC-6.0FSN2E 44.70 RED2-6WHT...
  • Page 270 8 Troubleshooting Power Indoor units Wiring diagram Cable no. Resistance (Ω) output RPK-0.8FSN(H)3M RPK-1.0FSN(H)3M RPK-1.5FSN(H)3M RPK-2.0FSN3M 40 W DC motor — RPK-2.5FSN3M RPK-3.0FSN3M RPK-4.0FSN3M 231.70 BLK1-2RED 198.70 RED2-3WHT RPF(I)-1.0FSN2E 136.20 28 W WHT3-4BLU RPF(I)-1.5FSN2E 71.20 BLU4-5ORN 202.40 ORN5-6YEL to 20 °C 97.90 BLK1-2RED 138.10...

  • Page 271: Inspection Of Other Components

    8 Troubleshooting 8.4 Inspection of other components Component name Unit model Model code Resistance (MΩ) RCI-FSN3 RCI-FSN3Ei APD-1403S Drain motor RCIM-FSN2 PSB-12(A)HHT-2 RPI(M)-FSN4E RCD-FSN2E KJV-1004 347 to 21ºC SMGB0077 rev.0 - 01/2013...

  • Page 272: Outdoor And Indoor Alarm Codes

    8 Troubleshooting 8.5 Outdoor and indoor alarm codes Code Category Abnormality Cause number Failure of fan motor, drain discharge, PCB, relay, float Indoor unit Activation of the safety device switch activated Failure of fan motor, drain discharge, PCB, relay, float Outdoor unit Activation of the safety device switch activated...
  • Page 273 8 Troubleshooting Code Category Abnormality Cause number O.U. pipe thermistor temp. is higher than 55 ºC and the Cooling overload (possible activation of high compressor top temp. is higher than 95 ºC, O.U. protection pressure device) device is activated. If I.U. freeze protection thermistor temp. is higher than Heating overload (high-pressure device may 55 ºC and compressor top temp.

  • Page 274: Dx-Interface Exv-(2.0-10.0)E1 Or Kpi-(E/H/X)3E Alarm Codes

    8 Troubleshooting 8.6 DX-Interface EXV-(2.0-10.0)E1 or KPI-(E/H/X)3E alarm codes Code KPI- KPI- Category Type of Abnormality Main cause KIT2 Active Float switch activation (high water level in drain hose or Indoor Activation of protection device abnormality in drain pipe, float switch or drain pan). Outdoor fuse meltdown, Indoor/outdoor connection wir- Transmission Transmission Error...

  • Page 275: Spare Parts

    9 Spare parts S p a r e p a r t s Index 9.1. RCI-(1.0-6.0)FSN3 ..........................264 9.2. RCI-(1.0-1.6)FSN3Ei ........................... 266 9.3. RCIM-(0.8-2.0)FSN2 ........................... 268 9.4. RCD-(1.0-3.0)FSN2..........................270 9.5. RCD-(4.0/5.0)FSN2 ..........................272 9.6. RPC-(2.0-6.0)FSN2E .......................... 274 9.7. RPI-(0.8-1.5)FSN4E ..........................276 9.8.

  • Page 276: Rci-(1.0-6.0)Fsn3

    9 Spare parts 9.1 RCI-(1.0-6.0)FSN3 SPN201201 SMGB0077 rev.0 - 01/2013...
  • Page 277 9 Spare parts Number Part name Remarks Drain hose assy Pump assy Drain discharge mechanism Float switch assy Heat exchanger assy Expansion valve EXPV Motor For expansion valve Support plate Pipe cover assy Fan motor Turbo fan Drain pan assy Bell mouth assy E-box cover Thermistor...

  • Page 278: Rci-(1.0-1.6)Fsn3Ei

    9 Spare parts 9.2 RCI-(1.0-1.6)FSN3Ei EPN-201204A SMGB0077 rev.0 - 01/2013...
  • Page 279 9 Spare parts Number Part name Remarks Terminal Board P-Spring For gas pipe Remote Control SW PC-ART (optional) Electrical Box Assembly (Components + Harness) Condenser Assy Thermistor Air inlet Thermistor Air outlet Thermistor Gas pipe Thermistor Liquid pipe Expansion Valve Air Filter Air Grille Assy Grille Knob...

  • Page 280: Rcim-(0.8-2.0)Fsn2

    9 Spare parts 9.3 RCIM-(0.8-2.0)FSN2 Optional (*) Electr ica l parts Drawing number: EPN-0606A-3B SMGB0077 rev.0 - 01/2013...
  • Page 281 9 Spare parts Number Part name Remarks Remote control swicth PC-P2HTE / PC-ART (optional) U04A Fuse 0.5A for control circuit U04B Fuse 5A for power source U15B Thermistor THM2 air outlet U15C Thermistor THM3 freeze protection (Liquid) U15D Thermistor THM5 gas Expansion valve —...

  • Page 282: Rcd-(1.0-3.0)Fsn2

    9 Spare parts 9.4 RCD-(1.0-3.0)FSN2 SMGB0077 rev.0 - 01/2013...
  • Page 283 9 Spare parts Number Part name Remarks Fuse 5A for the control circuit Capacitor 4/5MF 440VAC U15A Thermistor THM1 thermistor for air inlet U15B Thermistor THM2 thermistor for air outlet U15C Thermistor THM3 thermistor, protection against liquid freezing U15D Thermistor THM5 thermistor for gas Expansion valve —...

  • Page 284: Rcd-(4.0/5.0)Fsn2

    9 Spare parts 9.5 RCD-(4.0/5.0)FSN2 SMGB0077 rev.0 - 01/2013...
  • Page 285 9 Spare parts Number Part name Remarks Fuse 5A for the control circuit U14A Capacitor 4MF 440VAC U14B Capacitor 5MF 440VAC U15A Thermistor THM1 thermistor for air inlet U15B Thermistor THM2 thermistor for air outlet U15C Thermistor THM3 thermistor, protection against liquid freezing U15D Thermistor THM5 thermistor for gas...

  • Page 286: Rpc-(2.0-6.0)Fsn2E

    9 Spare parts 9.6 RPC-(2.0-6.0)FSN2E SMGB0077 rev.0 - 01/2013...
  • Page 287 9 Spare parts Number Part name Remarks Terminal board Remote control SW Assembly of (components + harness) Capacitor 4uF/5uF U15A Thermistor THM3 thermistor for liquid piping U15B Thermistor THM5 thermistor for gas pipe U15C Thermistor THM1 thermistor for air inlet U15D Thermistor THM2 thermistor for air outlet...

  • Page 288: Rpi-(0.8-1.5)Fsn4E

    9 Spare parts 9.7 RPI-(0.8-1.5)FSN4E SMGB0077 rev.0 - 01/2013...
  • Page 289 9 Spare parts Number Part name Remarks Terminal Board Remote Control SW PC-ART (Optional) Electrical Box Assembly (Components + Harness) Capacitor Assy. Thermistor For Liquid Pipe Thermistor For Gas Pipe Thermistor For Inlet Air Thermistor For Outlet Air Expansion Valve (Without Coil) Expansion Valve Coil Filter...

  • Page 290: Rpi-(2.0-3.0)Fsn4E

    9 Spare parts 9.8 RPI-(2.0-3.0)FSN4E EPN-201208A-1B SMGB0077 rev.0 - 01/2013...
  • Page 291 9 Spare parts Number Part name Remarks Terminal Board Remote Control SW PC-ART (Optional) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness)

  • Page 292: Rpi-(4.0-6.0)Fsn4E

    9 Spare parts 9.9 RPI-(4.0-6.0)FSN4E EPN-201208A-2B SMGB0077 rev.0 - 01/2013...
  • Page 293 9 Spare parts Number Part name Remarks Terminal Board Remote Control SW PC-ART (Optional) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness)

  • Page 294: Rpi-(8.0/10.0)Fsn3E

    9 Spare parts 9.10 RPI-(8.0/10.0)FSN3E EPN-201108A-1B SMGB0077 rev.0 - 01/2013...
  • Page 295 9 Spare parts Number Part name Remarks Terminal Board Remote Control SW PC-ART (Optional) Fuse Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Capacitor 20µF Capacitor 25µF Thermistor For liquid Pipe Thermistor For Gas Pipe Thermistor For Inlet Air Thermistor For Outlet Air...

  • Page 296: Rpim-(0.8-1.5)Fsn4E(-Du)

    9 Spare parts 9.11 RPIM-(0.8-1.5)FSN4E(-DU) EPN-201206A-2B SMGB0077 rev.0 - 01/2013...
  • Page 297 9 Spare parts Number Part name Remarks Terminal Board Remote Control SW PC-ART (Optional) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness) Electrical Box Assembly (Components + Harness)

  • Page 298: Rpk-(0.8/1.0)Fsn(H)3M

    9 Spare parts 9.12 RPK-(0.8/1.0)FSN(H)3M SMGB0077 rev.0 - 01/2013...
  • Page 299 9 Spare parts Number Part name Remarks Heat exchanger Drain cap Expansion valve Only for RPK-(0.8/1.0)FSN3M EXPV motor Only for RPK-(0.8/1.0)FSN3M Thermistor For air inlet (THM1) Thermistor For air outlet (THM2) Thermistor For freeze protection (THM3) Thermistor For gas line (THM5) Fan motor DC, 38W Motor clamp...

  • Page 300: Rpk-1.5Fsn(H)3M

    9 Spare parts 9.13 RPK-1.5FSN(H)3M SMGB0077 rev.0 - 01/2013...
  • Page 301 9 Spare parts Number Part name Remarks Heat exchanger Drain cap Expansion valve Only for RPK-1.5FSN3M EXPV motor Only for RPK-1.5FSN3M Thermistor For air inlet (THM1) Thermistor For air outlet (THM2) Thermistor For freeze protection (THM3) Thermistor For gas line (THM5) Fan motor DC, 38W Motor clamp...

  • Page 302: Rpk-(2.0-4.0)Fsn3M

    9 Spare parts 9.14 RPK-(2.0-4.0)FSN3M SMGB0077 rev.0 - 01/2013...
  • Page 303 9 Spare parts Number Part name Remarks Heat Exchanger Drain Cap Expansion Valve EXPV Motor For expansion valve Thermistor For air inlet (THM1) Thermistor For air outlet (THM2) Thermistor For freeze protection (THM3) Thermistor For gas line (THM5) Fan Motor DC, 38W Motor Clamp Bearing...

  • Page 304: Rpf-(1.0-2.5)Fsn2E

    9 Spare parts 9.15 RPF-(1.0-2.5)FSN2E SMGB0077 rev.0 - 01/2013...
  • Page 305 9 Spare parts Number Part name Remarks Terminal board — Remote control switch PC-P2HTE/PC-ART Exp. valve cord — Exp. valve cord — Capacitor 2μF / 4μF U15A Thermistor THM1 Air Inlet U15B Thermistor THM5 Gas U15C Thermistor THM3 Liquid (freeze protection) U15D Thermistor THM2 Air Outlet...

  • Page 306: Rpfi-(1.0-2.5)Fsn2E

    9 Spare parts 9.16 RPFI-(1.0-2.5)FSN2E SMGB0077 rev.0 - 01/2013...
  • Page 307 9 Spare parts Number Part name Remarks Printed circuit board terminals — SW remote control PC-P2HTE/PC-ART (optional) Cord expansion valve — Cord expansion valve — Capacitor 2uF/4uF U15A Thermistor THM1 thermistor for air inlet U15B Thermistor THM5 thermistor for gas pipe U15C Thermistor THM3 thermistor for liquid piping...

  • Page 308: Kpi-(252-2002)(E/H)3E And Kpi-(502-1002)X3E

    9 Spare parts 9.17 KPI-(252-2002)(E/H)3E and KPI-(502-1002)X3E SMGB0077 rev.0 - 01/2013...
  • Page 309 9 Spare parts Number Part name Remarks Duct Connector Plastic material Duct Connection Sealing Strip For Duct Connector Damper Motor AC Motor for Damper Exchanger Guide Gasket Fan Assy Fan Cover Air Filter Inlet & Outlet Air Celluloid Heat Exchanger (Aluminium HE for KPI-XXX- Heat Exchanger H3E) Fan Service Cover...

  • Page 310: Dx-Interface

    9 Spare parts 9.18 DX-Interface SMGB0077 rev.0 - 01/2013...
  • Page 311 9 Spare parts SMGB0077 rev.0 - 01/2013...
  • Page 312 9 Spare parts Number Part name Remarks E-BOX EXP. VALVE KIT E-BOX EXP. VALVE KIT PACKING GLAND PACKING GLAND NUT PRINTED CIRCUIT BOARD AUX PCB SPACER For PCB Fixing TERMINAL BOARD TERMINAL BOARD TRANSFORMER PUSH SPACER For PCB Fixing THERMISTOR THM3: For liquid Pipe;...

  • Page 313: Servicing

    10 Servicing S e r v i c i n g Index 10.1. RCI - 4-way cassette (1.0-6.0)FSN3 ....................304 10.1.1. Removing Air Filter and Air Inlet Grille ..................... 304 10.1.2. Removing Electrical Box Cover ....................... 305 10.1.3. Removing Optional Air Panel ........................306 10.1.4.
  • Page 314 10 Servicing 10.3.10. Removal of the float switch ........................331 10.3.11. Removal of the thermistors from the liquid and gas pipes ............... 331 10.3.12. Removal of the electronic expansion valve coil ..................332 10.3.13. Removal of the automatic louver motor ....................334 10.4.
  • Page 315 10 Servicing 10.7.7. Removal of the float switch ........................357 10.7.8. Removal of the air filter ..........................357 10.8. RPIM - Ducted indoor unit ........................358 10.8.1. Removal of the electrical box ........................358 10.8.2. Removal of the inlet and outlet air thermistors ..................359 10.8.3.

  • Page 316: Rci - 4-Way Cassette (1.0-6.0)Fsn3

    10 Servicing 10.1 RCI - 4-way cassette (1.0-6.0)FSN3 10.1.1 Removing Air Filter and Air Inlet Grille 1 The air filter is attached inside the air inlet grille. While pushing both ends of knobs at the air inlet grille toward the arrow direction, open the air inlet grille.

  • Page 317: Removing Electrical Box Cover

    10 Servicing 10.1.2 Removing Electrical Box Cover 1 The electrical box appears when opening the air inlet grille. Remove the fixing screw for electrical box cover and open the electrical box. 2 The electrical box cover can hook onto the electrical box during the maintenance.

  • Page 318: Removing Optional Air Panel

    (CN17) on the indoor unit PCB1. 2 Remove the air inlet grille from the air panel. HITACHI AIR( / )CONDITIONER Model N112 3 Remove four (4) corner pocket covers from the air panel. They can be removed pulling “...

  • Page 319: Removing Turbo Fan And Fan Motor

    10 Servicing 10.1.4 Removing Turbo Fan and Fan Motor 1 Remove the air inlet grille and the electrical box cover according to the item 2.3.1 “Removing Air Filter and Air Inlet Grille“ and Drain Pump Motor the item 2.3.2 “Removing Electrical Box Cover“. Connector (PCN6) 2 Moving Electrical Box Fixing Screw 2...

  • Page 320: Removing Printed Circuit Board (Pcb1)

    10 Servicing 10.1.5 Removing Printed Circuit Board (PCB1) 1 Remove the air inlet grille according to the item “Removing Air Filter and Air Inlet Grille”. 2 Remove the electrical box according to the item “Removing Electrical Box Cover“. 3 Disconnect all wiring connectors from PCB1. 4 Remove the screw for earth wire.

  • Page 321: Removing Drain Pan

    10 Servicing 10.1.6 Removing Drain Pan 1 Remove the air panel according to the item “Removing Optional Air Panel”. 2 Remove the electrical box cover according to the item “Removing Electrical Box Cover“. Disconnect connectors of air outlet thermistor, 2 pipe thermistors (gas and liquid), the expansion valve, the drain pump, the float switch and the fan motor.

  • Page 322: Removing Drain-Up Mechanism

    10 Servicing 10.1.8 Removing Drain-Up Mechanism 1 Remove the drain pan according to the item “Removing Drain Pan”. 2 Remove the insulation which attaches the wires for float switch and drain-up mechanism together. 3 Cut the plastic band fixing the wires at the fixing plate for float switch. 4 Cut the hose band for drain hose by nipper, and remove the drain hose from the drain-up mechanism.

  • Page 323: Removing Float Switch

    10 Servicing 10.1.9 Removing Float Switch 1 (1) Remove the drain pan according to the item “Removing Drain Pan”. 2 (2) Remove the insulation which attaches the wires for float switch and drain-up mechanism together. 3 (3) Cut the plastic band fixing the wires at the fixing plate for float switch.

  • Page 324: Removing Thermistors For Liquid Pipe And Gas Pipe

    10 Servicing 10.1.10 Removing Thermistors for Liquid Pipe and Gas Pipe 1 Remove the air panel according to the item “Removing Optional Air Panel”. 2 Remove the bell-mouth according to the item “Removing Turbo Fan and Fan Motor”. 3 Remove the drain pan according to the item “Removing Drain Pan”. 4 Removing Partition Plate Remove six (6) fixing screws for partition plate.

  • Page 325: Removing Electronic Expansion Valve Coil

    10 Servicing 10.1.11 Removing Electronic Expansion Valve Coil C A U T I O N TURN OFF all power source switches. 1 Remove the air panel according to the item “Removing Optional Air Panel”. 2 Remove the bell-mouth according to the item “Removing Turbo Fan and Fan Motor”. 3 Remove the drain pan according to the item “Removing Drain Pan”.

  • Page 326: Removing Auto Louver Motors

    10 Servicing 10.1.12 Removing Auto Louver Motors 1 Remove the air panel according to the item “Removing Optional Air Panel”. 2 Remove the fixing screws for each corner cover and remove the corner covers. 3 Remove the packings and guides. 4 Remove two (2) fixing screws for each motor from the air panel.

  • Page 327: Removing Louver

    10 Servicing 10.1.13 Removing Louver 1 Remove the air panel according to the item “Removing Optional Air Panel”. 2 Remove the corner cover according to the item “Removing Auto Louver Motors”. 3 Remove the packings and guides. 4 Remove two (2) fixing screws for motors from the air panel. Remove the screw for louver bearing, and pull it out from the air panel.

  • Page 328: Rci - 4-Way Cassette (1.0-6.0)Fsn3Ei

    10 Servicing 10.2 RCI - 4-way cassette (1.0-6.0)FSN3Ei 10.2.1 Removal of the long-lasting air filter Nº Part Button Air inlet grille The long-lasting filter is located inside the air inlet grille. Press the buttons in the direction indicated by the arrows and open the air inlet grille.

  • Page 329: Removal Of The Electrical Box Cover

    10 Servicing 10.2.3 Removal of the electrical box cover Nº Part Screws Electrical box cover The electrical box can be removed by opening the air inlet grille. Remove the two set screws from the electrical box cover and remove it. SMGB0077 rev.0 - 01/2013...

  • Page 330: Removal Of The Optional Air Panel

    10 Servicing 10.2.4 Removal of the optional air panel Nº Part Main PCB Connector CN17 for the louver motor Remove the electrical box cover as is indicated in chapter Removal of the electrical box cover and separate connector CN17 from the louver motor in the main indoor PCB.

  • Page 331: Removal Of The Fan Duct And Motor

    10 Servicing 10.2.5 Removal of the fan duct and motor Nº Part Plastic clamp PCB electrical box set screws Remove the air inlet grille as is indicated in chapter Removal of the air inlet grille. Remove the electrical box as follows: 1 Disconnect the thermistors (THM2), the drainage motor connector (PCN6) and the float switch connector (CN14) from the PCB.

  • Page 332: Removal Of The Printed Circuit Board (Pcb)

    10 Servicing 10.2.7 Removal of the printed circuit board (PCB) Nº Part Power supply PCB Control PCB Remove the air inlet grille as indicated in chapter Removal of the air inlet grille. Remove the electrical box cover as indicated in chapter Removal of the electrical box cover.

  • Page 333: Removal Of The Drain Pan

    10 Servicing 10.2.8 Removal of the drain pan Remove the optional air panel as is indicated in chapter Removal of the optional air panel. Remove the electrical box cover as indicated in chapter Removal of the electrical box cover. Separate the connectors from: 1 The air outlet thermistor.

  • Page 334: Removal Of The Float Switch

    10 Servicing 10.2.10 Removal of the float switch Nº Part Securing plate screw Securing base Drain mechanism Float switch Remove the drain pan as indicated in chapter Removal of the drain pan. Loosen the resin nut securing the float switch and remove it. Remove the two screws securing the drain mechanism to remove the mechanism.

  • Page 335: Removal Of The Electronic Expansion Valve Coil

    10 Servicing 10.2.12 Removal of the electronic expansion valve coil Nº Part Expansion valve Remove the optional air panel in line with the instructions given in chapter Removal of the optional air panel. Remove the fan duct in line with the instructions given in chapter Bellmouth removal.

  • Page 336: Removal Of The Automatic Louver Motor

    10 Servicing N O T E • Do not apply significant force to the motor, such as rotational torque or bending load, while holding it with your hand and tightening the nut. • The direction of the eccentric part of the motor is fitted in the same way as the expansion valve. Although the motor is facing away from the piping connections on the valve body, modification of this direction does not affect the valve open/close function. Therefore, it is not necessary to adjust the direction of the motor if the motor position moves in the direction of rotation after replacement, as shown in the figure. However, check that the motor direction for the electronic expansion valve coil does not touch another pipe or •...

  • Page 337: Rcim - 4-Way Cassette (0.8-2.0)Fsn2 (Compact)

    10 Servicing 10.3 RCIM - 4-way cassette (0.8-2.0)FSN2 (compact) 10.3.1 Removal of the air filter The long-lasting filter is located inside the air inlet grille. Press the buttons in the direction indicated by the arrows and open the air inlet grille. Remove the filter from the grille by holding onto the lower part of the grille and the filter and detaching the blocked part.

  • Page 338: Removal Of The Optional Air Panel

    10 Servicing 10.3.4 Removal of the optional air panel Open the air inlet grille and separate the automatic louver connector. Remove the screw -a- from the side of the optional air panel and detach two hinges in the direction indicated by the arrow -b-. Then remove the four corner covers from the optional air panel by sliding them in the direction indicated by the arrow -c-.

  • Page 339: Removal Of The Electrical Box

    10 Servicing 10.3.5 Removal of the electrical box Nº Part Electrical box set screw Drainage pump connector (PCN6) Automatic louver connector (CN17) Outlet thermistor (THM2) Automatic louver electrical box set screw (THM2) Fan motor connector (CN203) Fan motor connector (CN201) Remove the air inlet grille as indicated in chapters Removal of the air filter and Removal of the air inlet grille.

  • Page 340: Removal Of The Fan Duct And The Fan

    10 Servicing 10.3.6 Removal of the fan duct and the fan Remove the three screws securing the fan duct to the drain pan and remove it. Remove the duct by removing the nut and washer securing it. Remove the fan motor connector. Remove the three nuts securing the fan motor and remove it.

  • Page 341: Removal Of The Drain Pan

    10 Servicing 10.3.8 Removal of the drain pan Remove the air panel in line with the instructions given in chapter Removal of the optional air panel. Remove the electrical box cover as indicated in chapter Removal of the electrical box. Separate the connectors from: 1 The air outlet thermistor.
  • Page 342 10 Servicing Remove the flange from the hose and remove the drain hose. Remove the earthing wiring screw. Hold the drain mechanism and remove the screw from the mechanism securing plate. Remove the mechanism with the securing plate. N O T E When installing, fit the drain hose as far as possible in the pump.

  • Page 343: Removal Of The Float Switch

    10 Servicing 10.3.10 Removal of the float switch Remove the drain pan as indicated in chapter Removal of the drain pan. Remove the screw securing switch securing plate to the drain pan and remove it. N O T E The float switch is located at the rear of the drain pan. Loosen the resin nut securing the float switch and remove it.

  • Page 344: Removal Of The Electronic Expansion Valve Coil

    10 Servicing N O T E • The thermistor protection and securing system is the same on the gas and liquid pipe. • The thermistors are secured with brackets. 10.3.12 Removal of the electronic expansion valve coil Remove the optional air panel in line with the instructions given in chapter Removal of the optional air panel.
  • Page 345 10 Servicing N O T E Do not hold onto the motor when loosening the nut with a wrench. The base of the transmission part could become loose and break. Loosen the nut several turns to release the transmission part from the bolt.

  • Page 346: Removal Of The Automatic Louver Motor

    10 Servicing 10.3.13 Removal of the automatic louver motor Remove the optional air panel in line with the instructions given in chapter Removal of the air optional air panel. Separate the connector from the AS motor. Remove the screw securing the louver and one set screw on the AS motor.

  • Page 347: Rcd - 2-Way Cassette

    10 Servicing 10.4 RCD - 2-way cassette 10.4.1 Removal of the long-lasting filter and the air inlet grille N O T E The long-lasting filter is located inside the air inlet grille. Open the air inlet grille by pressing the button, as indicated in the figure. Remove the filter from the grille by holding onto the lower part of the grille and the filter and detaching the blocked part.

  • Page 348: Removal Of The Fan Duct And The Fan

    10 Servicing 10.4.4 Removal of the fan duct and the fan Remove the optional air panel in line with the instructions given in chapter Removal of the optional air panel. Separate the connectors from each cable in the electrical box. Remove the two set screws from the electrical box and turn around 90°...

  • Page 349: Removal Of The Printed Circuit Board (Pcb)

    10 Servicing Remove the cap nut and the washer securing the fan duct and remove it. N O T E • Torque value: maximum 8 Nm. • RCD-(1.5-3.0)FSN2: one duct and one fan motor. • RCD-(4.0-5.0)FSN2: two ducts and two fan motors. Separate the connector from the fan motor earth cable.

  • Page 350: Removal Of The Drain Mechanism

    10 Servicing 10.4.7 Removal of the drain mechanism Remove the air inlet grille as indicated in chapter Removal of the long-lasting filter and the air inlet grille. Remove the bellmouth in line with the instructions given in chapter Removal of the fan duct and the fan. Remove the drain pan as indicated in chapter Removal of the drain pan.

  • Page 351: Removal Of The Thermistors From The Liquid And Gas Pipes

    10 Servicing Check that the drainage hole is not blocked. RCD-(1.0-3.0)FSN2: remove the two screws securing the reinforcement plate to the drain pan securing plate. RCD-(4.0/5.0)FSN2: remove the two screws securing the support plate to the drain pan securing plate and remove it. Remove the two drain pan securing plates and remove it.

  • Page 352: Removal Of The Electronic Expansion Valve Coil

    10 Servicing 10.4.10 Removal of the electronic expansion valve coil Secure the body of the valve using an appropriate wrench and loosen the nut with another wrench, turning it anti-clockwise. N O T E Do not hold onto the motor when loosening the nut with a wrench.

  • Page 353: Removal Of The Automatic Louver Motor

    10 Servicing 10.4.11 Removal of the automatic louver motor Remove the optional air panel in line with the instructions given in chapter Removal of the optional air panel. Remove the insulating material attached by the adhesive on both sides of panel C. Remove the two screws securing panel C and remove the optional air panel.

  • Page 354: Rpc - Ceiling

    10 Servicing 10.5 RPC - Ceiling 10.5.1 Removal of the air filter Press the buttons on the grille backwards. Open the air inlet grille downwards. Lift the button and remove the filter. 10.5.2 Removal of the side panel Pull the side panel forwards. Release the hook from the lower part of the panel.

  • Page 355: Removal Of The Air Outlet Grille

    10 Servicing 10.5.3 Removal of the air outlet grille Remove the side panel in line with the instructions given in chapter Removal of the side panel. Remove the right shaft crank on the air louver. Remove the four set screws from the louver and remove it. N O T E The louver includes the linkage brackets.

  • Page 356: Removal Of The Fan Shaft Support

    10 Servicing Nº Part Electrical box Remove the screws securing the box and attach to the lower frame. C A U T I O N Hold onto the electrical box to prevent it from falling. Press the four attachment points of the cover (1) inwards and remove it.

  • Page 357: Removal Of The Coupling

    10 Servicing 10.5.6 Removal of the coupling Remove the side panel in line with the instructions given in chapter Removal of the side panel. Remove the cover in two parts, as indicated in section Removal of the fan motor. Loosen the coupling screw using a hexagonal wrench. Remove the M8 bolt securing the support as indicated in section Removal of the fan shaft support.

  • Page 358: Removal Of The Printed Circuit Board (Pcb)

    10 Servicing Disconnect the drain hose and remove the drain pan. Nº Part Gas thermistor (yellow connector) Liquid thermistor (black connector) Remove the thermistors from the liquid and gas pipe. 10.5.9 Removal of the printed circuit board (PCB) Open the air inlet panel as indicated in chapter Removal of the air filter.
  • Page 359 10 Servicing Nº Part Carefully remove the securing supports from the printed control board (PCB) (four) by pressing carefully on the support tabs with long-tipped pliers. C A U T I O N • Do not touch the electrical components of the PCB. •...

  • Page 360: Rpi-(0.8-6.0)Fsn4E

    10 Servicing 10.6 RPI-(0.8-6.0)FSN4E 10.6.1 Removal of the electrical box Nº Part Location of the electrical box cover RPI-(0.8-1.5)FSN4E RPI-(2.0-6.0)FSN4E Nº Part Set screw Terminal board Transformer RPI-(0.8-1.5)FSN4E RPI-(2.0-6.01)FSN4E SMGB0077 rev.0 - 01/2013...

  • Page 361: Removal Of The Inlet And Outlet Air Thermistors

    10 Servicing 10.6.2 Removal of the inlet and outlet air thermistors Inlet air thermistor Nº Part Cable clamp Thermistor N O T E Disconnect and remove the thermistor.The thermistor is located on the outlet side of the unit. Nº Part Location of the air inlet thermistor N O T E To disconnect and remove the appropriate thermistor,...

  • Page 362: Removal Of The Thermistors From The Liquid And Gas Pipes

    10 Servicing 10.6.3 Removal of the thermistors from the liquid and gas pipes Nº Part Electrical box Drain pump Screws N O T E To disconnect and remove the appropriate thermistor, • previously see the chapter corresponding to the wiring diagrams in this Manual.

  • Page 363: Removal Of The Drain Mechanism

    10 Servicing Nº Part Locks Duct Fixture supports Fan motor Fan casing Remove the rear cover as indicated in chapter Removal of the inlet and outlet air thermistor. Remove the tape located in the centre of the casing. Press the locks and remove half of the fan casing. Remove the fixture support screws and carefully remove the motor together with the fans.

  • Page 364: Removal Of The Float Switch

    10 Servicing 10.6.6 Removal of the float switch Nº Part Float switch position N O T E To disconnect and remove the float switch, previously see the chapter corresponding to the wiring diagrams in this Manual. Remove the drain pump support screws and remove it. Loosen the screws securing the float switch to the support. Loosen the resin nut securing the float switch and remove it.

  • Page 365: Rpi-(8.0-10.0)Fsn3E - Ducted Indoor Unit

    10 Servicing 10.7 RPI-(8.0-10.0)FSN3E - Ducted indoor unit 10.7.1 Removal of the electrical box cover Remove the set screws -A- from the electrical box cover to access the electrical components. 10.7.2 Removal of electrical components Remove the electrical box cover Removal of the electrical box cover. Separate the connections of all electrical components.
  • Page 366 10 Servicing Nº Part Cable clamp Thermistor Outlet air thermistor The outlet air thermistor -B- is located on the right-hand side of the air outlet from the unit. Remove the electrical box cover Removal of the electrical box cover. Disconnect and remove the thermistor. N O T E To disconnect and remove the appropriate thermistor, previously see the chapter corresponding to the wiring...

  • Page 367: Removal Of The Thermistors From The Liquid And Gas Pipes

    10 Servicing 10.7.4 Removal of the thermistors from the liquid and gas pipes Remove all screws -A- from the lower cover of the unit and separate it. Remove the electrical box cover Removal of the electrical box cover. Disconnect the thermistor. N O T E •...

  • Page 368: Fan Removal

    10 Servicing Remove the screws -A- securing the drain pan and remove it. N O T E When fitting, seal the drain hose gasket correctly. 10.7.6 Fan removal Remove all screws -A- from the lower cover of the unit and separate it. Remove the electrical box cover Removal of the electrical box cover.

  • Page 369: Removal Of The Float Switch

    10 Servicing 10.7.7 Removal of the float switch Remove all screws -A- from the lower cover of the unit and separate it. Remove the drain pan Removal of the drain pan. N O T E To disconnect and remove the float switch, previously see the chapter corresponding to the wiring diagrams in this Manual. Loosen the resin nut securing the float switch -A- and remove it.

  • Page 370: Rpim - Ducted Indoor Unit

    10 Servicing 10.8 RPIM - Ducted indoor unit 10.8.1 Removal of the electrical box Nº Part Location of the electrical box cover. Remove the electrical box cover to access the electrical components. Nº Part Set screws Terminal board Transformer Remove the set screws and remove the electrical box from the unit.

  • Page 371: Removal Of The Inlet And Outlet Air Thermistors

    10 Servicing 10.8.2 Removal of the inlet and outlet air thermistors Inlet air thermistor Nº Part Cable clamp Thermistor N O T E To disconnect and remove the appropriate thermistor, previously see the chapter corresponding to the wiring diagrams in this Manual. Nº...

  • Page 372: Outlet Air Thermistor

    10 Servicing 10.8.3 Outlet air thermistor Nº Part Outlet thermistor N O T E • The thermistor is located on the outlet side of the unit. • To disconnect and remove the appropriate thermistor, previously see the chapter corresponding to the wiring diagrams in this Manual.

  • Page 373: Removal Of The Fan Parts

    10 Servicing Nº Part Location of the thermistor N O T E • Black connector: liquid thermistor. • Yellow connector: gas thermistor. 10.8.4 Removal of the fan parts Fan parts: fan motor, fan casing and duct. Remove the rear cover as indicated in chapter Removal of the inlet and outlet air thermistors.

  • Page 374: Removal Of The Float Switch

    10 Servicing 10.8.5 Removal of the float switch Nº Part Float switch position N O T E To disconnect and remove the float switch, previously see the chapter corresponding to the wiring diagrams in this Manual. Remove the necessary covers to access the float switch. Loosen the screws securing the float switch to the support. N O T E The torque value of the resin nut is 0.3 - 0.4 Nm.

  • Page 375: Removal Of The Air Filter

    10 Servicing 10.8.6 Removal of the air filter Nº Part Air filter fixture bar Remove the air filter fixture support screws and remove the air filter. Nº Part Air filter Screws Air filter fixture bar Pull the air filter downwards. SMGB0077 rev.0 - 01/2013...

  • Page 376: Rpk - Fsn(H)3M Wall Mounted

    10 Servicing 10.9 RPK - FSN(H)3M Wall mounted 10.9.1 Removal of the air filter  For RPK-(0.8-1.5)FSN(H)3M Open the flat panel. Hold the both sides of flat panel and pull it up Filter Catches (2 portions)  For for RPK-(2.0-4.0)FSN(H)3M 10.9.2 Removal of the front panel C A U T I O N • Cover completely the front panel with a sheet of plastic to protect it during installation work.
  • Page 377 10 Servicing Extend the shaft Remove this part in the direction of from the hole. the arrow. Flat Panel Screw Bush Catches on Drain Pan’ s Projection Lower Side of Portion for Catches Front Panel Do not apply an excessive force to the catches. 5 When mounting the front panel, firstly attach the air outlet side of the panel to the unit and then put the catches (four portions) on the upper side of the unit into the holes on the panel.
  • Page 378 10 Servicing Attaching flat panel. Guide at Insert completely the left and right arm shafts of flat panel into Front Panel Hole the holes along the guide at the front panel. Ater the flat panel is attached completely, insert the catches for air filter to fix it. Front Panel Flat Panel ...
  • Page 379 10 Servicing N O T E Make sure that there is no gap nor lap between the front panel and the left side of the drain pan. If there is a gap there, an air leakage and dew condensation may occur and the dew may drop on the front panel. 6 Tighten 3 screws and attach 3 bushes.

  • Page 380: Electrical Box Structure

    10 Servicing 10.9.3 Electrical Box Structure The electrical box for a wall type indoor unit is composed of the following components. Electrical Box Termina l Board Cover Dip Switch PCB (PCB2) Indoor Unit PCB (PCB1) Termin al Board Switch Cover PCB for Receiver Receiver Cover (with Indicator)

  • Page 381: Remove The Electrical Box Cover

    10 Servicing 10.9.4 Remove the electrical box cover Remove the flat panel as indicated in section Removal of the flat panel. The electrical box cover can be opened without removing the front panel. RPK-(0.8-1.5)FSN(H)3M RPK-(2.0-4.0)FSN3M Electrical box cover Switch cover Switch cover Electrical box cover...

  • Page 382: Replacing Pcb1 For Control

    10 Servicing 10.9.6 Replacing PCB1 for Control  For RPK-(0.8-1.5)FSN(H)3M a. Remove the electrical box according to the “Removing Electrical Box.” chapter. N O T E If there is enough service space to the right side of the electrical box, PCB1 can be replaced without removing the electrical box.
  • Page 383 10 Servicing b. Remove 1 screw (A) fixing the terminal board cover to remove it. Then, remove 2 screws (C) fixing the electrical box cover to remove it. (B)-1: Screw for Electrical Box Cover Terminal Board Cover (A): Screw for Terminal Board Cover Electirical Box Cover (B)-2: Screw for Electrical Box Cover...

  • Page 384: Removing Electrical Box

    10 Servicing Specers on Front Side (2 portions) g. Insert the new PCB1 for replacement into the grooves of two (2) spacers on the rear side. Then attach the PCB1 to the hooks on the front side to fix it. h.
  • Page 385 10 Servicing 5 Remove the wirings for the freeze protection thermistor, gas pipe thermistor, inlet air thermistor and the expansion valve coil from the wiring outlet at the upper part. Also remove the wirings for the outlet air thermistor, auto-louver and fan motor from the wiring outlet at the lower part.

  • Page 386: Removing As Motor

    10 Servicing 10.9.8 Removing AS Motor  For RPK-(0.8-1.5)FSN(H)3M 1 Remove the front panel according to the “Removing Front Panel” chapter. 2 Remove the electrical box according to the “Removing Electrical Box” chapter. 3 Remove 2 screws fixing the AS motor to remove it. Then pull the AS motor outward and remove it from the shaft of the horizontal louver.

  • Page 387: Removing Drain Pan

    10 Servicing 10.9.9 Removing Drain Pan Take care when removing the drain pan, as water may have collected in the drain pan.  For RPK-(0.8-1.5)FSN(H)3M Do not remove the horizontal louver. Otherwise, some component may be damaged. 1 Remove the front panel according to the “Removing Front Panel” chapter. 2 Remove the electrical box according to the “Removing Electrical Box”...
  • Page 388 10 Servicing  For RPK-(2.0-4.0)FSN(H)3M 1 Remove the front panel according to the “Removing Front Panel” chapter. 2 Remove the electrical box according to the “Removing Electrical Box” chapter. 3 Remove the louver cover (A) (2 portions) attached to the lower part of the cabinet with a slotted screwdriver. 4 Remove 2 hooks (B) for the drain pan.

  • Page 389: Removing Heat Exchanger

    10 Servicing 10.9.10 Removing Heat Exchanger D A N G E R TURN OFF all power source switches. C A U T I O N • Recover the refrigerant from the unit before the work. After all the refrigerant is recovered, turn OFF all power source switches.
  • Page 390 10 Servicing 9 Tilt up the piping holder at the rear side approximately 10 degrees in the direction of the arrow (A) as shown in the figure below. 10 Pull out the heat exchanger with the rear pipings obliquely upward in the direction of the arrow (B) to remove it from the slotted portion.
  • Page 391 10 Servicing Piping Holder Catches for Fixing Piping Holes for releasing chatches 10 Remove 2 screws fixing the left side of the heat exchanger and undo 1 hook for the heat exchanger. Then remove butyl sheet covering piping between the heat exchanger and the electrical box. 11 Remove 1 screw fixing the right side of the heat exchanger.

  • Page 392: Removing Thermistors For Freeze Protection, Gas Pipe, Outlet Air And Inlet Air

    10 Servicing 10.9.11 Removing Thermistors for Freeze Protection, Gas Pipe, Outlet Air and Inlet Air  For RPK-(0.8-1.5)FSN(H)3M 1 Remove the front panel according to the “Removing Front Panel” chapter. 2 Remove the electrical box according to the “Removing Electrical Box” chapter. 3 Remove the plastic band (A) clamping each thermistor.
  • Page 393 10 Servicing Inlet Air Thermistor Fix the Inlet air thermistor with the plastic band so that the Plastic Band (B) thermistor wire will not be loosened. Plastic Band (B) Place the wirings for the thermistors (for inlet air, gas pipe and freeze protection), and the expansion valve coil into the electriacal box from the wiring outlet at the upper side.
  • Page 394 10 Servicing Outlet Air Thermistor Rubber Bush Insulation Tape Insulation Tape Cover for Outlet Air Thermistor  For RPK-(2.0-4.0)FSN(H)3M 1 Remove the front panel according to the “Removing Front Panel” chapter. 2 Remove the electrical box according to the “Removing Electrical Box” chapter. 3 Remove the heat exchanger according to the “Removing Heat Exchanger”...
  • Page 395 10 Servicing Rasin Component Fixing Termistor Pipe Inlet Air Thermistor Inlet Air Thermistor Freeze Protection Thermistor Freeze Protection Thermistor Termo Clip Gas Pipe Thermistor Plastic Band (B) 7 Removing Inlet Air Thermistor a. The inlet air thermistor is clamped with one (1) plastic band (B) to the resin component for fixing the thermistor inserted into the sub heat exchanger fins.

  • Page 396: Removing Fan And Fan Motor

    10 Servicing Lead Wiring for Outlet Air Thermistor Drain Pan Approx. 29mm Drain Pan Outlet Air Rubber Bush for Thermistor Outlet Air Thermistor Rubber Bush for Flocked Sheet Outlet Air Thermistor Make sure that it is approx. 29mm from the drain pan to the top of the thermistor.

  • Page 397: Removing Electronic Expansion Valve Coi

    10 Servicing  For RPK-(2.0-4.0)FSN(H)3M 1 Remove the heat exchanger according to the “Removing Heat Exchanger” chapter. 2 Remove 2 screws fixing the motor clamp. As lifting up the motor clamp in the direction of the arrow (A), pull it out in the direction of the arrow (B).
  • Page 398 10 Servicing N O T E Take care not to twist the piping. 3 Insert the new expansion valve coil for replacement into the expansion valve body. Fit the projection portions into the detents with the wiring outlet facing up. N O T E • The detents are located 90º...

  • Page 399: Removing Horizontal Louver

    10 Servicing New Electronic Expansion Projection Portion Detent of Electronic Valve Coil for Replacement on Valve Body Expansion Valve Coil Rotation Direction Wiring Outlet of Expansion Valve Coil 10.9.14 Removing Horizontal Louver  For RPK-(0.8-1.5)FSN(H)3M Do not remove the horizontal louver when removing the drain pan. Removing the horizontal louver will result in component failures.
  • Page 400 10 Servicing 5 Remove the lower horizontal louver in the same procedure as the upper horizontal louver. 6 When mounting the horizontal louvers, mount the louvers in the reverse procedure. N O T E When mounting the horizontal louvers, insert the D-cut portions at the far right shafts of the louvers into the AS Motor shafts.

  • Page 401: Rpf(I)- (1.0-2.5)

    10 Servicing 10.10 RPF(I)- (1.0-2.5) 10.10.1 Removal of the air inlet grille RPF-(1.0-2.5)FSN2E Loosen the screws on the securing plate of the right part of the grille then remove the plates. Press the button on both sides of the grille in the direction indicated by the arrow.

  • Page 402: Removal Of The Air Outlet Grille

    10 Servicing 10.10.3 Removal of the air outlet grille RPF-(1.0-2.5)FSN2E Remove the screw holding the securing plate. Open the upper panel so that it is vertical. Slide and remove the air outlet grille. 10.10.4 Removal of the front panel Remove the central panel air filter in line with the instructions given in chapter Removal of the air filter.

  • Page 403: Removal Of The Printed Circuit Board (Pcb)

    10 Servicing 10.10.6 Removal of the printed circuit board (PCB) Remove the air inlet grille as indicated in section Removal of the air inlet grille. Remove the air filter as indicated in section Removal of the air filter. Remove the front panel as indicated in section Removal of the front panel.

  • Page 404: Removal Of The Thermistors From The Liquid And Gas Piping

    10 Servicing C A U T I O N • Do not touch the electrical components of the PCB. • Do not apply force to the PCB, as this could damage it. • Pay special attention to the position of the connectors on the PCB. An incorrect position during installation may damage the PCB.

  • Page 405: Kpi

    10 Servicing 10.11 KPI 10.11.1 System description An example of the system is shown below. Make sure the system has been checked by a HITACHI distributor. Exchange mode Ventilation bypass mode The air returning from the indoor part passes through the total heat exchanger unit and is expelled outdoors.

  • Page 406: Dx-Interface

    10 Servicing 10.12 DX-Interface 10.12.1 Structure and part names DX-Interface EXV-(2.0-10.0)E1 Nº Name Nº Name Control box PCB2 Control box cover Expansion valve box Cable gland Terminal board 3 Terminal board 1 Terminal board box and cover PCB1 Expansion valve box cover Terminal board 2 Refrigerant connections Transformer...

  • Page 407: Electrical Checks Of The Main Parts

    11 Electrical checks of the main parts E l e c t r i c a l c h e c k s o f t h e m a i n p a r t s Index 11.1. Thermistor ............................396 11.2.

  • Page 408: Thermistor

    11 Electrical checks of the main parts 11.1 Thermistor Check that the thermistors are connected to the PCB inlet and, if not, connect them. Use a multimeter to check that the thermistor resistances are bet- ween 240 Ω and 840 kΩ. Otherwise, replace any defective ther- mistors.

  • Page 409: Electronic Expansion Valve

    11 Electrical checks of the main parts 11.2 Electronic expansion valve 1 Check that the voltage of the valve ranges between 12Vdc±1.2V. 2 Use a multimeter to check the coil resistance (per phase). This ranges between 150 Ω±10% at an ambient temperature of 20°. 3 Check the number of pulses per second.

  • Page 410: Automatic Louver Mechanism

    11 Electrical checks of the main parts 11.3 Automatic louver mechanism 11.3.1 RCI(M) indoor units Stop the automatic louver: 1 Press AUTO LOUVER on the remote control while the automa- tic louver is operating. 2 The AS-type stop (2) touches the end of the steel plate and the louver returns to position 0.

  • Page 411: Rcd Indoor Units

    11 Electrical checks of the main parts 11.3.2 RCD indoor units Stop the automatic louver: 1 Press AUTO LOUVER on the remote control while the automa- tic louver is operating. 2 The crank (2) touches the end of the motor securing plate (7) and the louver returns to position 0.
  • Page 412 11 Electrical checks of the main parts Number Part name Motor Pinion Gear Bushing Cover Louver Remove the optional air panel. Remove the automatic louver cover and motor. Check for dust, dirt, damp and cracks on the parts. Check the meshing and the joints between the parts: 1 Motor shaft and pinion.

  • Page 413: Maintenance Notes

    12 Maintenance notes M a i n t e n a n c e n o t e s Index 12.1. Regular equipment maintenance ......................402 12.1.1. Necessary tools, equipment and consumable for regular maintenance ..........402 12.1.2. Indoor cleaning ............................404 12.1.3.

  • Page 414: Regular Equipment Maintenance

    12 Maintenance notes 12.1 Regular equipment maintenance 12.1.1 Necessary tools, equipment and consumable for regular maintenance  Tools Tool Remarks Water pump for cleaning Use of a water pump with a tank is recommended Cleaning water tank Approx. 18 litres Nozzle Brush Non-metal, with a brush length of 25 to 35 mm...
  • Page 415 12 Maintenance notes Equipment Equipment Remarks Cleaning water manifold Depending on the type of unit to be cleaned, use a duct-type, built-in 2-way type, wall type or ceiling type manifold. The lower part of the Ø120 hole must be co- vered with a piece of felt to insert the nozzle of the gun Cleaning water manifold kit Built-in 4-way...

  • Page 416: Indoor Cleaning

    12 Maintenance notes Consumables Consumable Remarks Cleaning product Neutral soap To secure the vinyl sheeting so that the room is protected from Adhesive tape the cleaning water Piece of felt Diameter of 120 mm 12.1.2 Indoor cleaning  Cleaning the built-in 4-way indoor unit RCI(M) Preliminary procedure.
  • Page 417 12 Maintenance notes Secure the vinyl sheet to the side plate of the exchanger using adhesive tape and seal the gap between the vinyl sheets in the same manner. Secure the motor panel using adhesive tape. Clean the dust from the inner surface of the heat exchanger by brushing it downwards.
  • Page 418 12 Maintenance notes N O T E 1 Set the pressure of the water pump so as not to damage the funs. 2 Any cleaning water left behind will rust the fins. Set the pump pressure to between 2.5 and 5 kg/cm to protect the fins.
  • Page 419 12 Maintenance notes  Cleaning the built-in 2-way indoor unit (RCD) Preliminary procedure. Place a vinyl sheet on the floor to protect the furniture and other items from the cleaning water before starting this job. Remove the drain pan as indicated in section Removal of the drain pan. Also carry out the following tasks: 1 Remove the drain pan after emptying it of water.
  • Page 420 12 Maintenance notes Hang the cleaning water manifold from the indoor unit. 1 Tie the rope to the suspension bolts of the indoor unit and drop downwards. 2 Insert the support bars into the holes in the water manifold. 3 Tie the rope to the support bar of the water manifold and hang the manifold.
  • Page 421 12 Maintenance notes 3 Once the drain pan has been removed, check that there is no water in the drainage at the bottom of the pan. 4 Clean and dry the pan before removing it. Handle the pan carefully. Remove the heat exchanger as indicated in sections Removal of the heat exchanger and Removal of the fan motor. Cleaning the indoor unit N O T E Wear gloves to avoid injuries caused by the heat exchanger fins.
  • Page 422 12 Maintenance notes  Cleaning the floor console and floor concealed console indoor unit RPF(I) Remove the front panel in line with the instructions given in chap- ter Removal of the front panel. Remove any dust from the heat exchanger. Remove the dust from the heat exchanger by brushing it in a downwards direction.
  • Page 423 12 Maintenance notes  Cleaning of the ceiling-type indoor unit (RPC) Preliminary procedure. Place a vinyl sheet on the floor to protect the furniture from the cleaning water before starting this job. Remove the side panels in line with the instructions given in chapter Removal of the side panel. Remove the louver in line with the instructions given in chapter Removal of the air outlet grille.
  • Page 424 12 Maintenance notes Place a vinyl sheet around the electrical components except the drain pan to protect them from splashed cleaning water. Secure the motor panel using adhesive tape. Clean the dust from the inner surface of the heat exchanger by brushing it downwards.

  • Page 425: Cleaning Of Kpi Units

    12 Maintenance notes Follow the steps below to wash with clean water: 1 Set the water pump pressure to between 2.5 and 5 kg/cm to protect the fins. 2 Start the water pump and wash the fins with clean water. Work and checks after cleaning 1 Measure the drainage pump insulation using a megohmmeter, check that the insulation is over a 1 MΩ...
  • Page 426 12 Maintenance notes KPI-(252-2002)(E/H)3E and KPI-(502-1002)X3E Pull the hinges back. Open and remove the service cover. Remove the air filters located at the bottom left and bottom right, close to the heat exchanger unit. KPI-(252-2002)(E/H)3E example Use a vacuum cleaner to suck up any dust. Dissolve a little neutral soap in cold or warm water to clean the dirt.
  • Page 427 12 Maintenance notes Cleaning energy recovery ventilation unit elements N O T E Clean the element once or more every two years to prevent the air flow and efficiency from dropping. C A U T I O N • Do not wash the element with water under any circumstances. Do not use the hard nozzle on the vacuum cleaner, as this could damage the exposed parts of the heat ex- •...

  • Page 428: Collection Of Refrigerant To Replace The Indoor Unit

    12 Maintenance notes KPI-(502-1002)H3E Aluminium heat exchanger can be cleaned using vapour. Clean the exchager using stream. 12.1.4 Collection of refrigerant to replace the indoor unit  Collection of refrigerant after replacing the indoor unit 1 Connect the gauge manifold to the gas and liquid stop valve. 2 Switch the power supply ON.
  • Page 429 Hitachi Air Conditioning Products Europe, S.A. Ronda Shimizu, 1 - Polig. Ind. Can Torrella 08233 Vacarisses (Barcelona) Spain Hitachi certifies that our products have met EU consumer safety, health and environmental requirements. Hitachi Air Conditioning Products Europe, S.A. is certified with:...

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