Mitsubishi FDUR208HEN-SA Manual
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Mitsubishi FDUR208HEN-SA Manual

Mitsubishi FDUR208HEN-SA Manual

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9. CEILING MOUNTED DUCT TYPE
PACKAGED AIR-CONDITIONER
Split system, Air to air
(
heat pump type
FDUR208HEN-SA
258HEN-SA
308HEN-SB
308HES-SB
408HES-SB
508HES-SB
FDUR308HEN-A
308HES-A
408HES-A
508HES-A
)
267
267

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  • Page 1 9. CEILING MOUNTED DUCT TYPE PACKAGED AIR-CONDITIONER Split system, Air to air heat pump type FDUR208HEN-SA FDUR308HEN-A 258HEN-SA 308HES-A 308HEN-SB 408HES-A 308HES-SB 508HES-A 408HES-SB 508HES-SB...

  • Page 2: Table Of Contents

    CONTENTS 9.1 GENERAL INFORMATION ................ 269 9.1.1 Specific features ................. 269 9.1.2 How to read the model name............. 269 9.2 SELECTION DATA ..................270 9.2.1 Specifications ..................270 9.2.2 Range of usage & limitations ............280 9.2.3 Exterior dimensions ................281 9.2.4 Exterior appearance ................

  • Page 3: General Information

    9.1 GENERAL INFORMATION 9.1.1 Specific features (1) Less refrigerant charge amount due to use of double phase refrigerant flow system. The total refrigerant charge amount has been reduced by more than 50%. (2) The indoor outdoor interconnection signal wiring has been done away with. The microcomputer chip is installed in the indoor unit. There is no need for the unit to communicate between the outdoor and indoor units so the unit is more resistant to electromagnetic noise thus the incidence of microcomputer malfunction has been reduced.

  • Page 4: Selection Data

    9.2 SELECTION DATA 9.2.1 Specifications Model FDUR208HEN-SA FDUR208HEN-SA Model Item FDUR208-A FDC208HEN3A Nominal cooling capacity 5000 Nominal heating capacity 5400 Power source 1 Phase, 220/240V, 50Hz Cooling input 2.09/2.21 Running current (Cooling) 9.8/9.8 Power factor (Cooling) 97/94 Heating input 1.82/1.87 Running current (Heating) 8.5/8.2...
  • Page 5 Model FDUR258HEN-SA FDUR258HEN-SA Model Item FDUR258-A FDC258HEN3A Nominal cooling capacity 5700 Nominal heating capacity 6100 Power source 1 Phase, 220/240V, 50Hz Cooling input 2.35/2.50 Running current (Cooling) 10.8/10.8 Power factor (Cooling) 99/96 Heating input 1.85/1.99 Running current (Heating) 8.6/8.7 Power factor (Heating) 98/95 Inrush current (L.R.A) Noise level...
  • Page 6 Model FDUR308HEN-SB FDUR308HEN-SB Model Item FDUR308-A FDC308HEN3B Nominal cooling capacity 7100 Nominal heating capacity 7800 Power source 1 Phase, 220/240V, 50Hz Cooling input 3.40/3.70 Running current (Cooling) 16.0/16.5 Power factor (Cooling) 97/93 Heating input 2.80/3.00 Running current (Heating) 13.0/13.8 Power factor (Heating) 98/91 Inrush current (L.R.A) Noise level...
  • Page 7 Model FDUR308HES-SB FDUR308HES-SB Model Item FDUR308-A FDC308HES3B Nominal cooling capacity 7100 Nominal heating capacity 7800 Power source 3 Phase, 380/415V 50Hz Cooling input 3.35/3.50 Running current (Cooling) 6.5/6.9 Power factor (Cooling) 78/71 Heating input 3.00/3.15 Running current (Heating) 6.0/6.2 Power factor (Heating) 76/71 Inrush current (L.R.A) Noise level...
  • Page 8 Model FDUR408HES-SB FDUR408HES-SB Model Item FDUR408-A FDC408HES3B Nominal cooling capacity 10000 Nominal heating capacity 11200 Power source 3 Phase, 380/415V 50Hz Cooling input 4.76/4.85 Running current (Cooling) 8.8/9.1 Power factor (Cooling) 82/74 Heating input 4.20/4.35 Running current (Heating) 7.9/8.7 Power factor (Heating) 81/70 Inrush current (L.R.A) Noise level...
  • Page 9 Model FDUR508HES-SB FDUR508HES-SB Model Item FDUR508-A FDC508HES3B Nominal cooling capacity 12500 Nominal heating capacity 14000 Power source 3 Phase, 380/415V 50Hz Cooling input 5.65/5.70 Running current (Cooling) 10.0/10.5 Power factor (Cooling) 86/76 Heating input 4.60/4.80 Running current (Heating) 8.5/9.5 Power factor (Heating) 82/70 Inrush current (L.R.A) Noise level...
  • Page 10 Model FDUR308HEN-A FDUR308HEN-A Model Item FDUR308-A FDC306HEN3 Nominal cooling capacity 7100 Nominal heating capacity 7300 Power source 1 Phase, 220/240V, 50Hz Cooling input 3.40/3.55 Running current (Cooling) 17.5/18.3 Power factor (Cooling) 88/81 Heating input 2.90/3.15 Running current (Heating) 15.4/16.4 Power factor (Heating) 86/80 Inrush current (L.R.A) Noise level...
  • Page 11 Model FDUR308HES-A FDUR308HES-A Model Item FDUR308-A FDC306HES3 Nominal cooling capacity 7100/7700 ISO-T1 ISO-T3 6000 Nominal heating capacity ISO-T1 7300/7900 Power source 3 Phase, 380-415V 50Hz, 380V 60Hz Cooling input 3.20/3.30/3.8 Running current (Cooling) 6.6/6.7/7.8 Power factor (Cooling) 74/69/74 Heating input 2.83/2.96/3.33 Running current (Heating) 6.17/6.33/7.37...
  • Page 12 Model FDUR408HES-A FDUR408HES-A Model Item FDUR408-A FDC406HES3 Nominal cooling capacity ISO-T1 10200/11300 ISO-T3 9900 Nominal heating capacity ISO-T1 10500/11600 Power source 3 Phase, 380-415V 50Hz, 380V 60Hz Cooling input 3.96/4.00/4.88 Running current (Cooling) 8.3/8.5/9.5 Power factor (Cooling) 72/65/78 Heating input 3.66/3.75/4.40 Running current (Heating) 7.6/8.4/9.1...
  • Page 13 Model FDUR508HES-A FDUR508HES-A Model Item FDUR508-A FDC506HES3 Nominal cooling capacity ISO-T1 12500/14000 ISO-T3 11900 Nominal heating capacity ISO-T1 12800/14400 Power source 3 Phase, 380-415V 50Hz, 380V 60Hz Cooling input 5.58/5.80/6.70 Running current (Cooling) 11.5/12.2/12.8 Power factor (Cooling) 74/66/80 Heating input 4.40/4.75/5.45 Running current (Heating) 9.0/10.3/10.5...

  • Page 14: Range Of Usage & Limitations

    9.2.2 Range of usage & limitations Models FDUR208~508 (FDC208~508) Models FDUR208, 258 (FDC208, 258 model) FDUR308~508 (FDC308~508 model) Item Indoor return air temperature (Upper, lower limits) Refer to the selection chart Outdoor air temperature (Upper, lower limits) Indoor unit atmosphere (behind ceiling) Dew point temperature: 28˚C or less, relative humidity: 80% or less temperature and humidity Refrigerant line (one way) length...

  • Page 15: Exterior Dimensions

    9.2.3 Exterior dimensions (1) Indoor unit Models FDUR208-A, 258-A, 308-A Unit : mm Air inlet duct (Low of suspension lug) (Duct for dimension) Control box Suspension bolts (M10 × 4pcs) 886 (Suspension bolts pitch) 850 (Duct for dimension) Liquid piping ø9.52 (3/8”) Air outlet duct Gas piping...
  • Page 16 Models FDUR408-A, 508-A Unit : mm Air inlet duct (Duct for dimension) (Low of suspension lug) Control box Suspension bolts (M10 × 4pcs) 1406 (Suspension bolts pitch) 1370 (Duct for dimension) Liquid piping ø9.52 (3/8”) Gas piping ø19.05 (3/4”) Air outlet duct Drain (Connectable with VP25) Drain (Natural drainage, VP25)

  • Page 17: Remote Controller

    (2) Remote controller Remote controller mounting dimensions Wall 0.3mm , 3cores (O.D.φ5.6) Wire (Recessed) LCD display For the passage after wiring Electrical box (Locally Purchased) Remote controller outline Allowable rang of wire thickness and length × Within 100 m Standard Within 0.3 mm ×...

  • Page 18: Outdoor Unit

    (3) Outdoor unit Unit: mm Model FDC208HEN3A Liquid piping: φ 6.35 (1/4") (Flare connecting) Gas piping: φ 15.88 (5/8") (Flare connecting) Liquid piping: φ 6.35 (1/4") (Flare connecting) Terminal block Gas piping: φ 15.88 (5/8") (Flare connecting) Opening for electric wiring Opening for piping and electric wiring Opening for piping...
  • Page 19 Models FDC258HEN3A, 308HEN3B, 308HES3B Unit: mm Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Terminal block Liquid piping: ø9.52 (3/8") (Flare connecting) Gas piping: ø15.88 (5/8") (Flare connecting) Opening for electric wiring Opening for electric wiring Opening for piping Opening for piping and electric wiring...
  • Page 20 Models FDC408HES3B, 508HES3B Liquid piping: ø 9.52 (3/8") (Flare connecting) Gas piping: ø 19.05 (3/4") (Flare connecting) Terminal block Liquid piping: ø 9.52 (3/8") (Flare connecting) Gas piping: ø 19.05 (3/4") (Flare connecting) Opening for electric wiring Opening for electric wiring Opening for piping Opening for piping and electric wiring...
  • Page 21 Models FDC306HEN3, 306HES3 Unit: mm Anchor bolts (M10 × 4 pcs) Required space for maintenance and air flow Minimum allowable space to the obstacles Unit:mm Installation type Mark Open Open Open Notes (1) Fix the unit with anchor bolts. (2) Strong wind must not be directed to the air outlet. (3) Free space over the unit must be larger than 1 m.
  • Page 22 Models FDC406HES3, 506HES3 Unit: mm Required space for maintenance and air flow Minimum allowable space to the obstacles Unit:mm Installation type Mark Open Open Open Notes (1) Fix the unit with anchor bolts. (2) Strong wind must not be directed to the air outlet. (3) Free space over the unit must be larger than 1 m.

  • Page 23: Exterior Appearance

    9.2.4 Exterior appearance (1) Indoor unit ..Zinc steel plate (2) Outdoor unit Models FDC258HEN3A, 308HEN3B, Models FDC408HES3B, 508HES3B Model FDC208HEN3A 308HES3B Polar white Polar white Polar white Models FDC406HES3, 506HES3 Models FDC306HEN3, 306HES3 Polar white Polar white...

  • Page 24: Piping System

    9.2.5 Piping system Models FDUR208HEN-SA, 258HEN-SA Cooling cycle Indoor unit Outdoor unit Heating cycle High pressure switch (63H (For fan motor control) Thermistor 4way valve Gas line Service valve Strainer (ø15.88) (Flare connecting) Heat exchanger Check joint Check joint Thermistor...
  • Page 25 Model FDUR508HES-SB High pressure switch (63H Cooling cycle (For fan motor control) Indoor unit Outdoor unit Heating cycle 4way valve Thermistor Gas line Strainer Service valve (ø19.05) (Flare connecting) Check joint Heat exchanger Capillary tube Thermistor Check joint Oil separator Thermistor Heat exchanger Capillary...
  • Page 26 Models FDUR408HES-A, 508HES-A Service valve Cooling cycle (Flare connecting) Heating cycle Indoor unit Outdoor unit Check joint High pressure switch (63H (For fan motor control) Strainer Strainer Gas line (ø19.05) 4way valve Check joint Heat Thermistor exchanger Accumulator Heat exchanger Check joint Thermistor Defrost...

  • Page 27: Selection Chart

    9.2.6 Selection chart Correct the cooling and heating capacity in accordance with the conditions as follows. The net cooling and heating capacity can be obtained in the following way. Net capacity = Capacity shown on specification × Correction factors as follows. (1) Coefficient of cooling and heating capacity in relation to temperatures (a) FDC208~508 Indoor air W.B.
  • Page 28 (c) FDC306HES3~506HES3 Cooling Heating Applicable range Indoor air W.B. temperature (˚CW.B.) ISO-T1 Standard condition ISO-T1 Standard condition Outdoor air W.B. temperature (˚CW.B.) Table of bypass factor Model FDUR208 FDUR258 FDUR308 FDUR408 FDUR508 Item 0.111 0.053 0.069 0.106 0.050 Air flow 0.083 0.037 0.049...

  • Page 29: Correction Of Cooling And Heating Capacity In Relation To One Way Length Of Refrigerant Piping

    (3) Correction of cooling and heating capacity in relation to one way length of refrigerant piping It is necessary to correct the cooling and heating capacity in relation to the one way equivalent piping length between the indoor and outdoor units. 50/60Hz Equivalent piping length Heating...

  • Page 30: Characteristics Of Fan

    9.2.7 Characteristics of fan Model FDUR208-A Model FDUR258-A Standard Standard pressure pressure 13 12 14 Lower Lower Upper Standard Upper Standard limit limit limit limit air flow air flow Air flow(m /min) Air flow(m /min) Model FDUR308-A Model FDUR408-A Standard Standard pressure pressure...

  • Page 31: Noise Level

    Model FDUR508-A Standard pressure 33.5 35.5 37.5 39.5 41.5 43.5 45.5 47.5 49.5 Lower limit Upper Standard limit air flow Air flow(m /min) 9.2.8 Noise level Notes (1) The data are based on the following conditions. Ambient air temperature: Indoor unit 27˚C DB, 19˚C WB. Outdoor unit 35˚C DB.
  • Page 32 FDUR408-A FDUR508-A Model Model Noise level 44 dB (A) at HIGH Noise level 45 dB (A) at HIGH 40 dB (A) at LOW 41 dB (A) at LOW 1000 2000 4000 8000 1000 2000 4000 8000 Mid Octave Band Frequency (Hz) Mid Octave Band Frequency (Hz) (2) Outdoor unit FDC208HEN3A...

  • Page 33: Electrical Data

    9.3 ELECTRICAL DATA 9.3.1 Electrical wiring Models FDUR208HEN-SA, 258HEN-SA...
  • Page 34 Model FDUR308HEN-SB...
  • Page 35 Model FDUR308HES-SB...
  • Page 36 Models FDUR408HES-SB, 508HES-SB...
  • Page 37 Model FDUR308HEN-A...
  • Page 38 Model FDUR308HES-A...
  • Page 39 Models FDUR408HES-A, 508HES-A...

  • Page 40: Outline Of Operation Control By Microcomputer

    9.4 OUTLINE OF OPERATION CONTROL BY MICROCOMPUTER (1) Wireless remote controller Models FDTN, FDEN, FDKN series (a) Remote controller Signal sender OPERATION MODE indicator Signals are sent to the air conditioner Indicates selected operation mode from here. Filter reset indicator Fan speed mark is indicated when the FILTER...
  • Page 41 Model FDEN series Heavy Duty RUN CHECK ON/OFF Remote controller signal receiver RUN LAMP (GREEN) BACK UP SWITCH When the remote controller is miss- Illuminates during operation. ing or defective, this switch can start and stop the air conditioner. Use the back up switch when the bat- tery is exhausted, or when the re- CHECK LAMP (YELLOW) mote controller is missing or defec-...
  • Page 42 (3) Control switch Model FDF series The liquid crystal display area indicates the full contents of display for explanation. Setting temperature display This display indicates the setting Filter sign temperature. When this display is indicated, clean the air filter. Operation mode display The selected operation mode is Remote display indicated.
  • Page 43 (3) Outline of microcomputer control function (a) Operation control function by the indoor controller Room temperature control (Differential of thermostat) Heating operation Cooling operation ON (52C) OFF (52C) OFF (52C) Set temp.by thermostat Set temp.by thermostat Temperature difference between thermostat set Temperature difference between thermostat set temp.
  • Page 44 Dehumidifying operation (“THERMAL DRY”) The compressor, the indoor fan motor and the outdoor fan motor Operation block are operated intermittently under thermistor (Th -A) control ac- cording to the appropriate operation block, to provide cooling op- eration for the dehumidifying. High Pattern of operation Set temp.
  • Page 45 FM control with the heating thermostat turned off (For cold draft prevention) (Only heat pump type) In order to prevent a cold draft while the heating thermostat is turned off, the indoor blower is controlled in response to the temperature of the indoor heat exchanger as illustrated below. It should be noted that if SW3-4 on the indoor PCB is turned off, the indoor blower will stop so far as the temperature of the indoor heat exchanger is lower than 40˚C.
  • Page 46 Condensate pump motor (DM) control (Only FDTN, FDT, FDR, FDUM, FDUR, models) During the cooling or Dehumidifying operation, the condensate pump motor (DM) is synchronized with the start of compressor operation. If the operation is switched from the operation stop, error stop, thermostat stop and the cooling of defrosting operation to the fan or heating operation, the drain motor continues to operate for 2 minutes after the switching.
  • Page 47 13) Compressor inching prevention control Compressor 3 minutes delay control The compressor will remain in stop state for three minutes. When the compressor is stopped by thermostat, ON/OFF switch, and/or by occurrence of trouble. Compressor 3 minutes forced operation control Compressor cannot be stopped for 3 minutes after it started.
  • Page 48 17) Drain detection (Only FDTN, FDT, FDR, FDUM, FDUR models) If there is detection of a drain abnormality during cooling operation, the drain pump goes ON for 5 minutes and the compres- sor which had been running comes to a stop. Overflow detection is carried out at all times with the float switch regardless of operational mode.
  • Page 49 ¡ At shipping from factory [FDTN, FDEN, FDKN models : J3 (SW5-3), FDT, FDR, FDU, FDUM, FDF, FDFL models : J5 (SW5- 2) ] on PCB OFF] ¡ Input signal to CnT OFF → ON [Edge input] ... Air conditioner ON ¡...
  • Page 50 22) Using 1 remote controller to control multiple units (indoor units - up to 16 units) (Only FDT, FDR, FDU, FDUM, FDUR FDFL models) Function A single remote control switch can be used for group control of multiple units (indoor units - up to 16 units). All units in the group that have had the remote control switch set at [Operating Mode] can be turned on and off in order of the unit number.
  • Page 51 (b) Operation control function by the wired remote controller The following is the sequence of operation for the remote controller operation mode switch. COOL (ii) CPU reset This functions when the " inspection " and " filter reset switch " on the remote controller are pushed simultaneously. It operates in the same manner as the power reset.

  • Page 52: Heating Operation

    (c) Operation control function by the outdoor controller (Only FDC208~508, FDCP308~508, FDC808) Control for outdoor unit fan a) Cooling Operation The speed of the fan for the outdoor unit is controlled by the temperature of the heat exchanger (Tho-R detection) and the outdoor air temperature (Tho-A).
  • Page 53 Control of fan for outdoor unit for de-icing Outdoor fan If DIP switch SW5-2 on the printed circuit board for the outdoor unit is set to on, the Outdoor fan stopped operates fan on the outdoor unit which has been stopped will operate for 10 seconds at Hi speed at Hi speed every 10 minutes when the outdoor air temperature is 3 °C or less.

  • Page 54: Open-Phase Protection

    Compressor protecting function (Microcomputer and phase protection relay) Overcurrent control When a 52C secondary L -phase continues for 0.5 seconds and when it is more than the set value (detection at current sensor CT), the compressor is stopped. The compressor is restarted after a 3-minute delay if the detection current is less than 1.5 to 2A.
  • Page 55 Abnormal high-pressure protection (Only case of FDCP308~508, FDC808) If the pressure rises and 63H is operated (opened), the compressor is stopped. After a 3-minute delay, the compressor is is opened 5 times within 60 minutes of the first operation. e Restore restarted.

  • Page 56: Application Data

    9.5 APPLICATION DATA SAFETY PRECAUTIONS • Please read these “Safety Precautions” f irst then accurately execute the installation work. • Though the precautionary points indicated herein are di vided under two headings. WARNING and CAUTION , those points which are related to the strong possibility of an installation done in error resulting in death or serious injury are li sted in the WARNING section.

  • Page 57: Installation Of Indoor Unit

    All Wiring of this installation must comply with NATIONAL, STATE AND LOCAL REGULATIONS. These instructions do not cover all variations for every kind of installation circumstance. Should further information be desired or should particular problems occur, the matter should be referred to Mitsubishi Heavy Industries, Ltd. through your local distributor. WARNING BE SURE TO READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGINNING INSTALLATION.
  • Page 58 (2) Suspension Be sure to observe the finished length of the suspension bolts given below. Unit : mm Mark Models FDUR208, 258, 308 FDUR408, 508 1406 (a) Fixing the suspension bolt (customer ordered parts M10) Securely fix the suspension bolt as illustrated below or in another way. Hole in anchor bolt Hole-in plug Insert...

  • Page 59: Drain Piping

    (b) Tap selection on blower unit. Taps of on blower unit are set at the standard selection at the shipping from factory. Where the static pressure is raised by changeing the connection of connectors provided at the flank of control box as shown below. Standard tap(at shipping) High speed tap Unit : Pa...
  • Page 60 ( g ) The height of the drain head may be elevated up to a point 600 mm from the bottom of unit and, when an obstacle exists in the ceiling space, elevate the piping to avoid the obstacle using an elbow or corresponding gadget. When doing this, if the stretch for the needed height is too high, the back-flow quantity of drain at the time of interruption of the operation gets too much and it may cause overflow at the drain pan.
  • Page 61 (5) Duct work Air conditioner iundoor unit Ceiling surface Suction grille 3 Suction duct Suction grille Ceiling surface (Locality) (marketed item) (option) 4 Blow outlet 1 Suction hole 5 Inspection hole (option) 2 Blowout duct (marketed item) (with air fillter) (optional or marketed item) A corrugated board (for preventing sputtering) is attached to the main body of the air conditioner (on the outlet port).
  • Page 62 (g) If a duct is not provided at the suction side but it is substituted with the space over the ceiling, humidity in the space will increase by the influence of capacity of ventilation fan, strength of wind blowing against the out door air louver, weather (rainy day) and others.
  • Page 63 9.5.2 Installation of remote controller (Optional parts) (1) Selection of installation location 1) Set necessary functions in accordance with the model Following locations should be avoided: of indoor unit. (a) Where exposed to direct sunlight 2) Couple the upper case with the lower case as they were. (b) Near the heat source 3) Secure the remote controller cords on the wall or other (c) Highly humid area or where splashed with water...

  • Page 64: Installation Of Outdoor Unit

    9.5.3 Installation of outdoor unit OWARNING BE SURE TO READ THESE INSTRUCTIONS CAREFULLY BEFORE BEGIN- NING INSTALLATION. FAILURE TO FOLLOW THESE INSTRUCTIONS COULD CAUSE SERIOUS INJURY OR DEATH, EQUIPMENT MALFUNCTION AND/ OR PROPERTY DAMAGE. Models FDC208~508, FDCP308~508, FDC808 (1) Installation (a) Accessories Confirm accessories shown below are attached in the bag with this installation manual.
  • Page 65 (d) Location where strong wind blows against the unit Install the unit directing the Install the unit directing the Where the foundation is not stable, secure the discharge air port to the wall. discharge air port at a right unit with wire, etc. Only case of FDC208~508 angle to the wind direction.
  • Page 66 (3) Refrigerant piping work Select the piping specification to fit the specification of Indoor unit and installation location. (a) Decision of piping specification Piping specification Unit : mm Indoor unit Outdoor unit model Gas pipe Liquid pipe ø 15.88 × t1.0 ø...
  • Page 67 ¡ Take care so that the piping to be worked does not contact the parts contained in the unit. IMPORTANT If it contacts the inner parts, abnormal sound or vibration may occur. (c) Leak test and air purge Perform the procedure according to the following instructions. ¡...
  • Page 68 (e) Refrigerant charge 1) Outdoor unit is pre-charged R-22 and R407C refrigerant at a factory as shown in Table 1. 2) Indoor unit is pre-charged only a small amount of nitrogen gas for prevention of the air entry. 3) Additional charge on site is required when the pipe length is longer than that of restricted value (Which is varied wirh the type of Indoor unit) as shown in Table 1.

  • Page 69: Drain Piping Work

    Following precautions must be observed when the model is adapted to R407C. (1) Tools and related components should be changed when handling a different kind of refrigerant in order to prevent mixing of different oils. Gauge manifold and charge hose, particularly, should never be used after using them for R22. (2) Charge cylinder should not be used.
  • Page 70 Power source and ground terminal block Wiring clamp ™ Secure the wiring so that no external force is applied to the connecting portion of terminal. Take out direction of wiring ™ Same as the refrigerant piping, 4 directions are allowed, which are right, front, rear and down.
  • Page 71 Installation where the area with strong winds. Install the unit so that the air outlet section of the unit must not be faced toward wind direction. (c) Installation of outdoor unit Installation Fix the unit in a proper way according to the condition of a place where it is installed by referring to the following. a) Concrete foundation b) Foundation anchor Unit...

  • Page 72: Electric Wiring

    Air purge Carry out the air purge of the indoor unit and refrigerant piping by vacuuming. Procedures. 1) Tighten all the flare nuts of the piping on the side of indoor and outdoor units so that there is no leakage. 2) Carry out vacuuming from the service valve charge port with the service valves (both liquid and gas side) of the outdoor unit fully closed.
  • Page 73 Select wire sizes and circuit protection from table below. (This table shows 20 m length wires with less than 2% voltage drop.) Item Circuit breaker Interconnecting and Power source wire size grounding wires Phase Over-current Protector Switch breaker (minumum) (minimum) Model rated capacity (A) 5.5 mm...

  • Page 74: Maintenance Data

    9.6 MAINTENANCE DATA 9.6.1 Servicing (1) Evacuation The evacuation is a procedure to purge impurities, such as noncondensable gas, air, moisture from the refrigerant equipment by using a vacuum pump. Since the refrigerant R22 and R407C is very insoluble in water, even a small amount of moisture left in the refrigerant equipment will freeze, causing what is called ice clogging.

  • Page 75: Refrigerant Charging

    (2) Refrigerant charging After the evacuation shown in the above, change the connection of the charge hose A to the refrigerant cylinder. Purge air from the charge hose A . First loosen the connecting portion of the charge hose at the gauge manifold side and open valve 3 for a few seconds, and then immediately retighten it after observing that gas has blown out from loosened connecting portion.

  • Page 76: Diagnosing Of Microcomputer Circuit

    9.6.3 Diagnosing of microcomputer circuit (1) Selfdiagnosis function (a) Indoor unit side Only case of wireless remote control model. Check indicator table Failure mode on the indoor unit indicated by flashing Yellow LED and Green LED. Indoor unit LED Failure at: Contents of the failure Yellow Green...
  • Page 77 (2) Error diagnosis procedures at the indoor unit side To diagnose the error, measure the voltage (AC, DC), resistance, etc. at each connector around the circuit board of indoor unit based on the inspection display or the operation state of unit (no operation of compressor or blower, no switching of 4-way valve, etc.).
  • Page 78 • Function of jumper wires • Function of DIP switched (SW3) Name Function Switch Function With 1 Phase model Power off guaranteed J1(SW5-1) SW3-1 None 3 Phase model No power off guaranteed With Cooling only type With low-voltage detection J2(SW5-2) None Heat pump type control...

  • Page 79: Indoor Unit

    (ii) Please match the settings of control switching switches (SW3, SW4, SW5) to the settings they had before they were replaced. With these switches, if the printed circuit had a jumper wire before being replaced, set to jumper wire ON if there was a jumper wire and jumper OFF is these was not.
  • Page 80 Drain abnormality Defective indoor unit PCB Replace- ment (Defective condensate motor output Indoor unit circuit) Check Lamp (yellow) 4 time flashes Is the angle of Is there output Is there any drain piping good. Is there for condensate motor overflow? any problem? (DM)? Repair...
  • Page 81 (ii) Only case of wired remote control model [Communication error between control switch ~ Indoor unit PCB] Error display : • Normal voltage for control switch wiring (DC) Unit is normal (Intrusion of accidental Between X and Z : 10.5 ~ 10.8 V noise on the control switch Between Y and Z : 5 ~ 10.8 V cord)
  • Page 82 [Heating overload] Error display : Is the air filter Washing clogged? Are the heat Is the indoor exchanger thermistor Is the heating unit heat exchanger Adjustment characteristics OK, is thermistor connector under overload? there no short connection OK? circuit? Defective indoor unit PCB Defective heat exchanger Correction Replacement (Defective indoor unit heat...
  • Page 83 e 14 [Communication is abnormal between master and slave indoor units.] Error display : Are master and Is remote controller slave units No. setting wiring between Defective indoor unit PCB Replacement. for indoor units one room in good correct? condition? Correct the unit No.
  • Page 84 (4) Outdoor unit side (FDC208~508, FDCP308~508, FDC808) Check Indicator Table Failure mode on the outdoor unit is indicated by flashing both Green LED (LED-G) and Red LED (LED-R) on the printed circuit board. Outdoor unit LED Failure at: Contents of the failure Green Normal/Power is supplied.
  • Page 85 Parts layout on the outdoor unit PCB PCB power supply connector (Primary side) 63H1 63H1 63H2 63H2 Inspection display lamp CNA1 (LED·Red) Inspection display lamp CNA2 (LED·Green) PCB power supply connector (Secondary side) • Function of DIP switched (SW4) • Function of DIP switched (SW5) Function Function 1 Phase model...
  • Page 86 (b) Inspection method when there are fault lamps (outdoor unit LED) Open phase at L phase (Primary side) Outdoor unit phase at Red LED 1 time flash Correction primary side at open Green LED Stays OFF phase Defective outdoor unit PCB Replacement Overcurrent of the compressor motor Outdoor unit...

  • Page 87: Outdoor Unit

    The outdoor heat exchanger temperature is too high (70°C or over) Check the unit side closely Are the heat Outdoor unit Cooling, overload exchanger thermistor • Is outdoor fan motor operating? Red LED 4 time flashes operation? Charateristisc • Is the outdoor unit shortcircuited? Normal? Green LED Stays OFF...
  • Page 88 Defective outdoor temperature thermistor Outdoor unit Red LED 2 time flashes Green LED 1 time flash Is the outdoor Defective outdoor unit PCB Is the outdoor temperature thermistor Replacement (Defective outdoor air temperature thermistor characteristics OK, is there temperature thermistor input connector connection no broken wire? circuit)
  • Page 89 High pressure error [63H ] (Only case of FDCP308~508) Outdoor unit Red LED 4 time flashes Green LED 1 time flash At 63H operation 1. During cooling • Is the outdoor unit fan motor operating? Did 63H operate? • Is there no short circuit air circulation for thr outdoor unit? •...
  • Page 90 MEMO...

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