Daikin Skyair FHC35K Service Manual
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Daikin Skyair FHC35K Service Manual

Cooling only heat pump split-system air conditioner skyair r(y)k&f series addition of fuy, fvy-l, fay-fa, fhyc140kve models r71, 100kval, r125ktal models
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Service
Manual
Skyair R(Y)K Series
l Addition of FUY, FVY-L, FAY-FA,
FHYC140KVE Models
R71, 100KVAL, R125KTAL Models
[Applied Models]
lSkyair : Cooling Only
lSkyair : Heat Pump
Si-71A

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  • Page 1 Si-71A Service Manual Skyair R(Y)K Series l Addition of FUY, FVY-L, FAY-FA, FHYC140KVE Models R71, 100KVAL, R125KTAL Models [Applied Models] lSkyair : Cooling Only lSkyair : Heat Pump...
  • Page 2 Si-71A Split-System Air Conditioners Skyair R(Y)K&F Series Cooling Only FHC35K FHK35F FHB35F FH35F FHYC71K FHYB71F 100K 100F 100F 125K 125F 125F 140K FUY71FJ FVY71F FVY71L FAY71F(A) 100FJ 100F 100L 100F(A) 125FJ 125F 125L R35G R71K 100K 125K 140K Heat Pump...

  • Page 3: Table Of Contents

    Si-71A 1. Introduction ................... vii 1.1 Safety Cautions ..................vii 3DUW#4 ,PSURYHG#3RLQWV#DQG#)XQFWLRQV 11111111111111111111111111111111111111111 4 1. 1999 New Models Functions..............2 1.1 Cooling Only and Heat Pump..............2 2. Present Model’s Functions..............4 2.1 Cooling Only and Heat Pump..............4 3DUW#5 5HPRWH#&RQWUROOHU#2SHUDWLRQ 111111111111111111111111111111111111111111111 < 1. Wired Remote Controller...............10 1.1 Wired Remote Controller................10 2.
  • Page 4 Si-71A 3DUW#8 7URXEOHVKRRWLQJ 111111111111111111111111111111111111111111111111111111111111111 :8 1. Maintenance Inspections ..............77 1.1 Optimal Operation Condition ..............77 2. How to Handle Request for Maintenance ..........80 2.1 Flow Chart ....................80 3. Troubleshooting Based on Equipment Condition........81 3.1 Troubleshooting Based on Equipment Condition ........81 3.2 Equipment does not Operate ..............82 3.3 Fan Operates, but Compressor does not.
  • Page 5 Si-71A 6.24 Failure of Field Setting Switch..............123 3DUW#9 5HPRYDO#3URFHGXUH 11111111111111111111111111111111111111111111111111111111 458 1. For FHYC71K..................127 1.1 Removal of Switch Box Cover..............127 1.2 Removal of Fan Motor................128 1.3 Removal of Suction Grille..............129 1.4 Removal of Air Filter................130 1.5 Removal of Decoration Cover ..............131 1.6 Removal of Decoration Panel...............132 1.7 Removal of Horizontal Vane..............133 1.8 Removal of Swing Motor ..............135...
  • Page 6 Si-71A 6.2 Removal of Outdoor Unit Fan and Fan Motor ........181 6.3 Removal of Outdoor Unit PC Board .............183 6.4 Removal of Electrical Parts Box ............184 6.5 Removal of Electronic Expansion Valve and Solenoid Valve....186 6.6 Removal of 4-Way Valve and Coil............187 6.7 Removal of Compressor...............188 3DUW#: $SSHQGL[1111111111111111111111111111111111111111111111111111111111111111111111111 4<4 1.
  • Page 7 Si-71A Table of Contents...

  • Page 8: Introduction

    Si-71A Introduction 1. Introduction Safety Cautions „ Be sure to read the following safety cautions before conducting repair work. Cautions and „ The caution items are classified into “ Warnings Warning” and “ Caution”. The “ Warning” items are especially important since they can lead to death or serious injury if they are not followed closely. The “...

  • Page 9: Cautions Regarding Products After Repair

    Introduction Si-71A Caution Do not repair the electrical components with wet hands. Working on the equipment with wet hands can cause an electrical shock. Do not clean the air conditioner by splashing water. Washing the unit with water can cause an electrical shock. Be sure to provide the grounding when repairing the equipment in a humid or wet place, to avoid electrical shocks.

  • Page 10: Inspection After Repair

    Si-71A Introduction Warning When connecting the cable between the indoor and outdoor units, make sure that the terminal cover does not lift off or dismount because of the cable. If the cover is not mounted properly, the terminal connection section can cause an electrical shock, excessive heat generation or fire.

  • Page 11: Using Icons

    Introduction Si-71A Caution If the installation platform or frame has corroded, replace it. Corroded installation platform or frame can cause the unit to fall, resulting in injury. Check the grounding, and repair it if the equipment is not properly grounded. Improper grounding can cause an electrical shock.
  • Page 12 Si-71A 3DUW#4 3DUW#4 3DUW#4 3DUW#4 ,PSURYHG#3RLQWV#DQG ,PSURYHG#3RLQWV#DQG ,PSURYHG#3RLQWV#DQG ,PSURYHG#3RLQWV#DQG )XQFWLRQV )XQFWLRQV )XQFWLRQV )XQFWLRQV 1. 1999 New Models Functions..............2 1.1 Cooling Only and Heat Pump..............2 2. Present Model’s Functions..............4 2.1 Cooling Only and Heat Pump..............4 Improved Points and Functions...

  • Page 13: New Models Functions

    1999 New Models Functions Si-71A 1999 New Models Functions Cooling Only and Heat Pump Cooling Only Items Improved Points and Functions Ceiling Suspended Floor Standing Wall Mounted Cassette type Note 1 FUY71~125FJV1 FVY71~125LVE FAY71, 100FAVE Model Type Indoor Units Outdoor Units Present Present Present...
  • Page 14 Si-71A 1999 New Models Functions Heat Pump Items Improved Points and Functions Ceiling Suspended Cassette Type Floor Standing FUY71~125FJV1 FVY71~125LVE Model Type Indoor Units Outdoor Units Present Present Main Improvement Appearance Improved (Indoor Unit) Reduction of Dimensions or Weight Reduction of Operation Sound For Comfortable Automatic Cool / Heat Change-over Air Conditioning...

  • Page 15: Present Model's Functions

    Present Model’s Functions Si-71A Present Model’s Functions Cooling Only and Heat Pump Cooling Only Items Improved Points and Functions Ceiling Mounted Cassette Ceiling Suspended Wired type Wireless type 35~60 71~140 35~60 71~140 35~60 71~125 Model Type Indoor Units Present Present Outdoor Units Main Appearance Improved...
  • Page 16 Si-71A Present Model’s Functions Items Improved Points and Functions Ceiling Mounted Built-in Ceiling Mounted Wall Floor Cassette Corner Mounted Standing 35~60 71~125 35~60 71, 100 71~125 Model type Indoor Units Present Present Present Present Present Present Outdoor Units Main Appearance Improved —...
  • Page 17 Present Model’s Functions Si-71A Heat Pump Items Improved Points and Functions Ceiling Mounted Cassette Ceiling Suspended Wired Type Wireless Type 35~60 71~140 35~60 71~140 35~60 71~125 Model Type Indoor Units Present Present Outdoor Units Main Appearance Improved Improvement Reduction of Dimensions or Weight (Indoor Unit) Reduction of Operation Sound —...
  • Page 18 Si-71A Present Model’s Functions Items Improved Points and Functions Ceiling Mounted Built-in Ceiling Mounted Wall Floor Cassette Corner Mounted Standing 35~60 71~125 35~60 “71, 100” 71~125 Model Type Indoor Units Present Present Present Present Present Present Outdoor Units Main Appearance Improved Improvement Reduction of Dimensions or Weight (Indoor Unit)
  • Page 19 Present Model’s Functions Si-71A Improved Points and Functions...
  • Page 20 Si-71A 3DUW#5 3DUW#5 3DUW#5 3DUW#5 5HPRWH#&RQWUROOHU 5HPRWH#&RQWUROOHU 5HPRWH#&RQWUROOHU 5HPRWH#&RQWUROOHU 2SHUDWLRQ 2SHUDWLRQ 2SHUDWLRQ 2SHUDWLRQ 1. Wired Remote Controller...............10 1.1 Wired Remote Controller................10 2. Wireless Remote Controller ..............12 2.1 Wireless Remote Controller ..............12 3. Wireless Remote Controller ..............14 3.1 Wireless Remote Controller ..............14 Remote Controller Operation...

  • Page 21: Wired Remote Controller

    Wired Remote Controller Si-71A Wired Remote Controller Wired Remote Controller BRC1B61 FH(Y)C, FHK, FAY, FUY, FHY BRC1B62 FH(Y)B, FH Fig.3 BRC1B61 Remote Controller Fig.4 BRC1B62 Remote Comtroller Remote Controller Operation...
  • Page 22 Si-71A Wired Remote Controller Remote Controller Operation...

  • Page 23: Wireless Remote Controller

    Wireless Remote Controller Si-71A Wireless Remote Controller Wireless Remote Controller BRC7C613W FH(Y)C-K BRC7C611W FAY-FA BRC7C69W FAY-F BRC7C529W FUY-FJ Fig1,2 FH(Y)C-K FAY-F(A) FUY-FJ Remote Controller Operation...
  • Page 24 Si-71A Wireless Remote Controller Remote Controller Operation...

  • Page 25: Wireless Remote Controller

    Wireless Remote Controller Si-71A 3. Wireless Remote Controller Wireless Remote Controller BRC7C612W FHYC-K BRC7C64W FAY-F Fig1,2 FHYC-K FAY-F Remote Controller Operation...
  • Page 26 Si-71A Wireless Remote Controller Remote Controller Operation...
  • Page 27 Wireless Remote Controller Si-71A Remote Controller Operation...
  • Page 28 Si-71A Part 3 Explanation of Field Set 1. Method of Field Set (Reset after Maintenance Inspection/Repair) ........1.1 Explanation.....................18 1.2 Field Setting ...................19 1.3 Initial Setting Contents ................21 1.4 Local Setting Mode No................22 1.5 Detailed Explanation of Setting Modes ..........24 1.6 Centralized Group No.

  • Page 29: Method Of Field Set (Reset After Maintenance Inspection/Repair)

    Method of Field Set (Reset after Maintenance Inspection/Repair) Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) Explanation Field set is carried out from the remote controller. At time of installation, or after maintenance inspection/ repair, carry out field set according to the explanation below. Incorrect settings will cause a malfunction to occur.

  • Page 30: Field Setting

    Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) Field Setting 1.2.1 Wired Remote Controller Notes: (Field setting must be made from the remote controller in accordance with the installation conditions.) „ Setting can be made by changing the “Mode number”, “FIRST CODE NO.”, and “SECOND CODE NO.”. „...
  • Page 31 Method of Field Set (Reset after Maintenance Inspection/Repair) Si-71A 1.2.2 Wireless Remote Controller Note: If optional accessories are mounted on the indoor unit, the indoor unit setting may have to be changed. Refer to the instruction manual (optional hand book) for each optional accessory. Procedure 1.

  • Page 32: Initial Setting Contents

    Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) Initial Setting Contents Setting Contents Filter Sign Filter Sign High Air Selection Air Flow Air Flow Twin Twin External Long Life Estimation of Outlet System No. of Air Flow Direction Direction System Static Filter Type...

  • Page 33: Local Setting Mode No

    Method of Field Set (Reset after Maintenance Inspection/Repair) Si-71A Local Setting Mode No. Example To set the filter sign time to “filter contamination - heavy” for all units in a group: Set mode No. to “10,” setting switch No. to “0,” and setting position No. to “02.” Table Mode Setting...
  • Page 34 Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) Caution When “auto restart after power outage reset” is set, be sure to turn off air conditioners, then cut off the power supply before conducting maintenance, inspection and other work. If the power supply is cut off with the power switch left ON, air conditioners will automatically start operating when the power supply is turned 7.

  • Page 35: Detailed Explanation Of Setting Modes

    Method of Field Set (Reset after Maintenance Inspection/Repair) Si-71A Detailed Explanation of Setting Modes 1.5.1 No. of Connected Twin System Indoor Units If using as twin system, switch the second code No. according to the number of units connected as given in the table below.

  • Page 36: Air Flow Direction Setting

    Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) „ In the Case of FHYC (100 to 140 class) No. of Air Outlets Used 4-way Outlets 3-way Outlets 2-way Outlets Ceiling Standard (N) Lower than 3.2 m Lower than 3.6 m Lower than 4.2 m Height High Ceiling c...
  • Page 37 Method of Field Set (Reset after Maintenance Inspection/Repair) Si-71A <In Case of FUY Model> After completing setting, seal off the opening of the address switch and the MAIN/SUB switch with the attached sealing pad. Setting The <Setting from the remote controller> Address of 1.

  • Page 38: Fan Speed Off When Thermostat Is Off

    Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) Multiple Settings When the indoor is being operating by outside control (central remote controller, etc.), it sometimes does not respond to ON/OFF and temperature setting commands from this remote controller. Check what setting the customer wants and make the multiple setting as shown below.
  • Page 39 Method of Field Set (Reset after Maintenance Inspection/Repair) Si-71A 1.5.7 Urtra-Long-Life Filter Sign Setting When a Urtra-long-life filter is installed, the filter sign timer setting must be changed. Setting Table Mode No. Setting Switch No. Setting Position No. Setting 10 (20) Long-Life Filter Urtra-Long-Life Filter (1) Urtra-Long-Life Filter (2)

  • Page 40: Centralized Group No. Setting

    Si-71A Method of Field Set (Reset after Maintenance Inspection/Repair) Centralized Group No. Setting „ If carrying out centralized control with a central remote controller and unified ON/OFF controller, you have to set the group No. for each group by remote controller. „...

  • Page 41: Settings Concerning Maintenance

    Settings Concerning Maintenance Si-71A Settings Concerning Maintenance Indoor Unit PCB FHC35K~ FHC60KVE, KV1C Explanation of Field Set...
  • Page 42 Si-71A Settings Concerning Maintenance FHYC35~ FHYC125KVE, V1C Explanation of Field Set...
  • Page 43 Settings Concerning Maintenance Si-71A FHB35~ FHB60FJV1, FV1 Explanation of Field Set...
  • Page 44 Si-71A Settings Concerning Maintenance FHYB35~FHYB71F Explanation of Field Set...
  • Page 45 Settings Concerning Maintenance Si-71A FHK35~ FHK60FJV1, FV1 Explanation of Field Set...
  • Page 46 Si-71A Settings Concerning Maintenance FHYK35~ FHYK71FJV1, FV1 Explanation of Field Set...
  • Page 47 Settings Concerning Maintenance Si-71A FAY71, FAY100FVE Explanation of Field Set...
  • Page 48 Si-71A Settings Concerning Maintenance FAY71, FAY100FAVE Explanation of Field Set...
  • Page 49 Settings Concerning Maintenance Si-71A FVY-L Explanation of Field Set...
  • Page 50 Si-71A Settings Concerning Maintenance FUY71~FUY125FJ Explanation of Field Set...

  • Page 51: Outdoor Unit Switches / Setting Jumper

    Settings Concerning Maintenance Si-71A Outdoor Unit Switches / Setting Jumper · RY100 RY125K Explanation of Field Set...
  • Page 52 Si-71A Settings Concerning Maintenance RY140K Explanation of Field Set...

  • Page 53: Existence Of Dip Switch, Jumper And Bs

    Existence of DIP Switch, Jumper and BS Si-71A Existence of DIP Switch, Jumper and BS Reference Table Model PC Board Type DIP Switch Jumper Defrosting Defrosting Thermostat Long Piping Pump Down Start Time Start Control Correction Forced Changeover Temperature Changeover Changeover Defrosting Changeover...

  • Page 54: Emergency Operation

    Si-71A Existence of DIP Switch, Jumper and BS Emergency Operation Emergency You can operate the system manually by changing the setting of the emergency switch (SS1) on the indoor Operation of Indoor unit’s PC board from “Normal” to “Emergency.” When switched however the equipment cannot regulate Units temperature.

  • Page 55: Maintenance Mode Setting

    Existence of DIP Switch, Jumper and BS Si-71A Maintenance Mode Setting Procedure 1. Enter the field set mode. Continue to push the inspection / test operation button for a minimum of 4 seconds. 2. Enter the maintenance mode. After having entered the field set mode, continue to push the inspection / test operation button for a minimum of 4 seconds.
  • Page 56 Si-71A 3DUW#7 3DUW#7 3DUW#7 3DUW#7 ([SODQDWLRQ#RI ([SODQDWLRQ#RI ([SODQDWLRQ#RI ([SODQDWLRQ#RI )XQFWLRQ#2SHUDWLRQ )XQFWLRQ#2SHUDWLRQ )XQFWLRQ#2SHUDWLRQ )XQFWLRQ#2SHUDWLRQ 1. Function Outline ..................46 1.1 Indoor Unit....................46 1.2 Outdoor Unit ...................48 2. Operation Flowchart (RY71 - 140K)............49 2.1 Cooling/Program Dry Operation .............49 2.2 Heating ....................51 3. Electric Function Parts ................53 3.1 Indoor Unit....................53 3.2 Outdoor Unit ...................56 4.

  • Page 57: Function Outline

    Function Outline Si-71A Function Outline Indoor Unit FH(Y)C, FH(Y), FAY, (Input) (Output) Indoor Unit Thermostat Control Suction Sensor Fan Motor Monitoring Function Heat Exchange Sensor Cool/Heat Automatic Function Drain Pump FH(Y) Optional (60Hz Only) Program Dry Float Switch Fan Operation FH(Y) Optional (60Hz Only) No.
  • Page 58 Si-71A Function Outline FH(Y)K, FH(Y)B, FHY~F, FVY~L (Input) (Output) Indoor Unit Suction Sensor Thermostat Function Fan Motor Flap Motor Heat Exchange Sensor Monitoring Function FVY, FH(Y)K Only Cool/Heat Automatic Function Drain Pump Not Used for FVY Float Switch Program Dry Not Used for FVY Fan Operation Drain Pump Control...

  • Page 59: Outdoor Unit

    Function Outline Si-71A Outdoor Unit All models (Input) (Output) Outdoor Unit Compressor ON/OFF Control Outdoor Temperature Sensor 3-minute Standby Function Compressor Heat Exchange Temperature 4-way Valve Defrosting Sensor Discharge Pipe Temperature Forced Defrosting Fan Motor Sensor PS for High Pressure Protection 4-way Valve Control Motor Operated Valve PS for Low Pressure Control...

  • Page 60: Operation Flowchart (Ry71 - 140K)

    Si-71A Operation Flowchart (RY71 - 140K) 2. Operation Flowchart (RY71 - 140K) Cooling/Program Dry Operation Power Switch ON Initializing of Electronic Expansion Valve (See Section 5. 2. 4.) Start Operation Using Remote Controller. Operation Mode Judgment Cooling/Dry Heating Emergency Operation (See Section 5.
  • Page 61 Operation Flowchart (RY71 - 140K) Si-71A ∗1 (Continued) ∗2 (Continued) Discharge pipe high temperature thermostat Is outside heat OFF control exchanger temperature (See Section 5. 2. 6.) high? Is EV opening Low outside temperature High pressure protection appropriate in control in cooling operation control in cooling operation thermostat OFF? (See Section 5.

  • Page 62: Heating

    Si-71A Operation Flowchart (RY71 - 140K) Heating Power Switch ON Initializing of Electronic Expasion Valve (See Section 5. 2. 4.) Start Operation Using Remote Controller. Operation Mode Judgment Cooling/Dry Heating Emergency Operation (See Section 5. 2. 9.) Four-Way Valve Control (See Section 5.
  • Page 63 Operation Flowchart (RY71 - 140K) Si-71A ∗1 (Continued) ∗2 (Continued) Is indoor heat Is EV opening exchanger temperature appropriate in high? thermostat OFF? (See Section 5. 2. 8.) High pressure protection Outdoor Unit Fan Control control in heating operation (See Section 5. 2. 18.) (See Section 5.

  • Page 64: Electric Function Parts

    Si-71A Electric Function Parts Electric Function Parts Indoor Unit FH(Y)C~KVE, KV1C Capacity Remarks Wired Remote Controller BRC1B51·61 (C) (EC9505) Optional Accessory Wireless Remote HEAT PUMP USE : BRC7C612W (C) Optional Controller COOLING ONLY USE : BRC7C613W (C) Accessory Electronic Control Unit FHYC : EC9743 FHC : EC9744 Fan Motor (Temperature KFP-220-45B...
  • Page 65 Electric Function Parts Si-71A FAY~F Capacity Remarks Wired Remote Controller BRC1B51·61 (EC9505) Optional Accessory Electronic Control Unit EC9654 Fan Motor 4P 46W 4P 49W Fan Motor Capacitor 2µF Swing Flap Motor MT8 [3SB40350-1] (with Limit Switch) FAY~FA Capacity Remarks Wired Remote Controller BRC1B51·61 (EC9505) Optional Accessory...
  • Page 66 Si-71A Electric Function Parts FUY~FJ Capacity Remarks Wired Remote Controller BRC1B51·61(EC9505) Optional Accessory Wireless Remote HEAT PUMP USE : BRC7C528W Optional Controller COOLING ONLY USE : BRC7C529W Accessory Electronic Control Unit EC98107 Fan Motor (Temperature D16P45R23 D17P90J23 Protector 130°C) 6P 45W 6P 90W Fan Motor Capacitor 3.5µF...

  • Page 67: Outdoor Unit

    Electric Function Parts Si-71A Outdoor Unit RY71KY1 RY71KV1 RY100KY1 RY125KY1 Compressor JT95BC-YE JT95BC-V1 JT125BC-YE JT160BC-YE J1HC Crank Case Heater S1PH Pressure Switch for Maintaining ACB-DB82 High Pressure OFF : 30 (kg/cm²G) ON : 22±1.5 (kg/cm²G) S2PH Pressure Switch for Maintaining ACB-CB57 —...
  • Page 68 Si-71A Electric Function Parts RY140KY1 RY140KTAL Compressor JT170BC-YE JT170BC J1HC Crank Case Heater S1PH Pressure Switch for Maintaining ACB-DB82 High Pressure OFF : 30 (kg/cm²G) ON : 22±1.5 (kg/cm²G) S1LP Pressure Switch for Low 20PS-1164-1 Pressure Control OFF : –23±15 (cmHg) ON : 0.5±0.3 (kg/cm²G) Magnetic Switch HOE-20F-TRA1...
  • Page 69 Electric Function Parts Si-71A R71KY1(E) R71KV1(E) R100KY1(E) R100KV1(E) Compressor JT90BC-YE JT90BC-V1 JT118BC-YE JT118BC-V1 J1HC Crank Case Heater S1PH Pressure Switch for Maintaining ACB-DB82 High Pressure OFF : 30 (kg/cm²G) ON : 22±1.5 (kg/cm²G) S1LP Pressure Switch for Low 20PS-1164-1 Pressure Control OFF : –23±15 (cmHg) ON : 0.5±0.3 (kg/cm²G) Magnetic Switch...
  • Page 70 Si-71A Electric Function Parts R125KY1(E) R140KY1 R140KTAL Compressor JT150BC-YE JT150BC-YE JT150BC-YE J1HC Crank Case Heater — S1PH Pressure Switch for Maintaining ACB-DB82 High Pressure OFF : 30 (kg/cm²G) ON : 22±1.5 (kg/cm²G) S1LP Pressure Switch for Low 20PS-1164-1 Pressure Control OFF : –23±15 (cmHg) ON : 0.5±0.3 (kg/cm²G) Magnetic Switch...
  • Page 71 Electric Function Parts Si-71A R71KVAL R100KVAL R125KTAL Compressor JT85BC-VH JT118-VH JT150BC J1HC Crank Case Heater S1PH Pressure Switch for Maintaining ACB-DB82 High Pressure OFF : 30 (kg/cm²G) ON : 22±1.5 (kg/cm²G) S1LP Pressure Switch for Low 20PS-1164-1 Pressure Control OFF : –23±15 (cmHg) ON : 0.5±0.3 (kg/cm²G) Magnetic Switch HOE-26F-TRA1...

  • Page 72: Thermistor Temperature And Resistance Conversion Table

    Si-71A Thermistor Temperature and Resistance Conversion Table Thermistor Temperature and Resistance Conversion Table Table Suction, Heat Exchange (Indoor Discharge Pipe Sensor (kΩ) Unit), Outdoor Air, Outdoor Suction Temperature (°C) Pipe, Sensor (kΩ) -6.0 90.8 866.8 -4.0 81.7 782.7 -2.0 73.5 707.6 66.3 640.4...

  • Page 73: Function Details

    Function Details Si-71A 5. Function Details Indoor Unit Thermostat Control Existing cooling/heating preset temperature range has been changed. Draft Avoidance Draft is circumvented by delaying transfer of the flap to the Po0 (horizontal) position for a certain amount of Control 1 time when defrosting and in the heating mode with the thermostat OFF.
  • Page 74 Si-71A Function Details Draft Avoidance When hot start is canceled or when cold air prevention control is finished, if the fan speed is set to “H,” the Control 2 fan turns at L speed for a certain amount of time, thus avoiding draft while the flap is moving. Air Flow Volume The air flow volume of an indoor unit is varied to prevent shutdown due to a rise in the high pressure level.
  • Page 75 Function Details Si-71A Auto-restart If there is a power cut when the unit is operating, it will automatically resume the same operating mode Function when the power is restored. Caution When performing maintenance and the power supply is to be shut off, be sure to turn the remote controller’s ON/OFF switch OFF first.

  • Page 76: Outdoor Unit

    Si-71A Function Details Outdoor Unit Note: Following functions are for R(Y)71~140K only. Please refer “Split G series” manual for smaller size outdoor units. 5.2.1 4-way Valve Control 4-way valves conduct power when heating. Changeover switching is carried out only during operation. 4-way valve ON : During heating except when defrosting 4-way valve OFF : During cooling, program dry and defrosting 5.2.2...

  • Page 77: Hps/Lps Detection Function

    Function Details Si-71A 5.2.3 HPS/LPS Detection Function If either HPS or LPS are actuated while the compressor is running, the compressor stops and begins standing by for 3 minutes. (Depending on operation conditions, even if LPS is actuated the compressor may not go OFF in some cases) If this movement is detected an additional 5 times from the time it is first detected to until turned off by remote controller, operation is stopped due to malfunction.
  • Page 78 Si-71A Function Details Time Chart 5.2.10 Simulated Operation Function If the outdoor air thermistor and outdoor unit heat exchange thermistor are malfunctioning, simulated operation is carried out while malfunction is displayed on the remote controller. (Stops due to malfunction if the discharge pipe thermistor is defective.) 5.2.11 Cooling Start Control...

  • Page 79: Freeze Prevention Control

    Function Details Si-71A In the Case of R(Y)J 5.2.13 Freeze Prevention Control The thermostat turns OFF under the following temperature conditions to prevent freezing of the indoor unit heat exchanger. „ The motorized valve is controlled to maintain the indoor heat exchanger temperature (Te) above 0°C. „...

  • Page 80: Solenoid Valve Control In Cooling Operation

    Si-71A Function Details 5.2.14 Solenoid Valve Control in Cooling Operation When the discharge pipe temperature (T2) is high, liquid is released from the modulator to reduce the discharge pipe temperature. ON condition T2 ≥ 120°C In the Case of OFF condition T2 ≤ 95°C R(Y)140K ∗...

  • Page 81: Fan Start Control In Heating Operation

    Function Details Si-71A Solenoid Valve Control (In the Case of R(Y)140 K) Solenoid valve : ON condition In range (1) or Discharge pipe temperature (T2) > Outdoor unit heat exchanger temperature (Tc) +30°C OFF condition In range (2) or T2 < Tc R 18°C 5.2.16 Fan Start Control in Heating Operation The starting air flow volume is varied as shown below according to the outside air temperature condition.
  • Page 82 Si-71A Function Details In the Case of R(Y) 5.2.18 Outdoor Unit Fan Control (Heating Overload Frosting Prevention Control) The air flow volume of an outdoor unit fan is varied in either one of the following two patterns according to the indoor unit heat exchanger temperature (Tc). In the Case of RY Explanation of Function Operation...
  • Page 83 Function Details Si-71A 5.2.19 Defrosting „ Intelligent type Defrost Starting Conditions Defrosting starts when either condition 1 or 2 has been realized. ‹ Condition 1 „ The compressor has been running for a total of 25 minutes or more since the start of heating or since completion of previous defrosting.
  • Page 84 Si-71A Function Details Control During heating, a defrosting request is made by the indoor unit when defrosting conditions have been realized. The control method are as following. Note: 4. Defrosting completion Defrosting ends when outdoor unit heat exchange temperature rises above 10°C and a minimum of 10 minutes elapses from the time defrosting begins, or when discharge pipe temperature rises above 120°C.
  • Page 85 Function Details Si-71A „ Hot start after defrosting operation Fan Stop <After defrost completion> 40 sec after defrost completion & 20 sec after defrost completion in case ambient temp. > 9°C and indoor suction air temp. > 24°C Before heat exchanger temp. > 36°C &...
  • Page 86 Si-71A 3DUW#8 3DUW#8 3DUW#8 3DUW#8 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 7URXEOHVKRRWLQJ 1. Maintenance Inspections ..............77 1.1 Optimal Operation Condition ..............77 2. How to Handle Request for Maintenance ..........80 2.1 Flow Chart ....................80 3. Troubleshooting Based on Equipment Condition........81 3.1 Troubleshooting Based on Equipment Condition ........81 3.2 Equipment does not Operate ..............82 3.3 Fan Operates, but Compressor does not.
  • Page 87 Si-71A 6.20 Reverse Phase..................118 6.21 Malfunction of Transmission (Between Indoor and Outdoor Unit)..119 6.22 Malfunction of Transmission (Between Indoor Unit and Remote Controller) ........121 6.23 Transmission Error Between Main Remote Controller and Sub Remote Controller.................122 6.24 Failure of Field Setting Switch..............123 Troubleshooting...

  • Page 88: Maintenance Inspections

    Si-71A Maintenance Inspections Maintenance Inspections Optimal Operation Condition Guide Lines for The operation value guide lines when operating under standard conditions by pushing the test run button Optimal Operation on the remote controller are as given in the table below. RY71~125K are used as example outdoor units in Condition the table.
  • Page 89 Maintenance Inspections Si-71A Correlation of Air- What happens in comparison to normal values is summarized in the table below. Conditioner’s (Measured from 15 ~ 20 minutes or more after operation starts.) Operation Status and Pressure / Running Current When Cooling Air-Conditioner Status Low Pressure High Pressure...
  • Page 90 Si-71A Maintenance Inspections Refrigerant Saturation Curve R-22 (kg/cm ) MPa 20.4 15.3 10.2 --40 --20 Temperature C (SG001) Troubleshooting...

  • Page 91: How To Handle Request For Maintenance

    How to Handle Request for Maintenance Si-71A How to Handle Request for Maintenance Flow Chart Find out the situation according to the following procedure when there is a request for service from the customer. Ask for the character Turn the power supply Refer to "Remote controller display Wait until code of the malfunction...

  • Page 92: Troubleshooting Based On Equipment Condition

    Si-71A Troubleshooting Based on Equipment Condition 3. Troubleshooting Based on Equipment Condition Troubleshooting Based on Equipment Condition Equipment Condition Remedy Equipment does not operate. See page 82 Fan operates, but compressor does not. See page 83 Cooling/heating operation starts but stops See page 84 immediately.

  • Page 93: Equipment Does Not Operate

    Troubleshooting Based on Equipment Condition Si-71A Equipment does not Operate Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Fuse blown or disorder of contact in operation circuit Possible Causes „ Faulty operation switch or contact point „...

  • Page 94: Fan Operates, But Compressor Does Not

    Si-71A Troubleshooting Based on Equipment Condition Fan Operates, but Compressor does not. Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Faulty remote controller Possible Causes „ Faulty magnetic switch for compressor Troubleshooting Make the following temperature setting using remote controller.

  • Page 95: Cooling/Heating Operation Starts But Stops Immediately

    Troubleshooting Based on Equipment Condition Si-71A Cooling/Heating Operation Starts but Stops Immediately. Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Excess charge of refrigerant Possible Cause „ Air intrudes into refrigerant system „ Faulty pressure switch „...

  • Page 96: After Equipment Shuts Down, It Cannot Be Restarted For A While

    Si-71A Troubleshooting Based on Equipment Condition After Equipment Shuts Down, It cannot be Restarted for a While. Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Overcurrent relay (for compressor) Possible Cause „ Compressor protection thermostat „...

  • Page 97: Equipment Operates But Does Not Provide Cooling

    Troubleshooting Based on Equipment Condition Si-71A Equipment Operates but does not Provide Cooling. Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Overcurrent relay (for compressor) Possible Cause „ Compressor protection thermostat „ Overcurrent relay may act due to the following reasons Lower voltage of power supply Excess level of high pressure Insufficient capacity of power cable...

  • Page 98: Equipment Operates But Does Not Provide Heating

    Si-71A Troubleshooting Based on Equipment Condition Equipment Operates but does not Provide Heating. Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Excess charge of refrigerant Possible Cause „ Air intrudes into refrigerant system „ Faulty pressure switch „...

  • Page 99: Equipment Discharges White Mist

    Troubleshooting Based on Equipment Condition Si-71A Equipment Discharges White Mist Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Humid installation site Possible Cause „ Installation site is dirty and with dense oil mists. „ Soiled heat exchanger „...

  • Page 100: Equipment Produces Loud Noise Or Shakes

    Si-71A Troubleshooting Based on Equipment Condition Equipment Produces Loud Noise or Shakes Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Excess charge of refrigerant Possible Cause „ Air intrudes into refrigerant system „ Flushing noise due to refrigerant shortage. (Sound of shooEE) Troubleshooting [Installation work side] Does the...

  • Page 101: Equipment Discharges Dust

    Troubleshooting Based on Equipment Condition Si-71A 3.10 Equipment Discharges Dust. Applicable Model All models of Skyair series Error Detection Method Error Generating Condition „ Carpet spread room Possible Cause „ Animal's hair Troubleshooting Does the trouble generate at the time of operation start Dust collected inside the indoor unit again after extended are blown out.

  • Page 102: Remote Controller Lcd Displays "88

    Si-71A Troubleshooting Based on Equipment Condition Remote Controller LCD Displays " ;; ;; ;; ;; ". 3.11 Applicable Model All models of Skyair series Error Detection Method Error Generating Condition Possible Cause Troubleshooting Trouble generates just after The unit is checking to confirm that power supply ON remote controller is normal.

  • Page 103: Procedure Of Self-Diagnosis By Remote Controller

    Procedure of Self-Diagnosis by Remote Controller Si-71A Procedure of Self-Diagnosis by Remote Controller The INSPECTION/TEST Button Explanation By turning the remote controller’s inspection /test button ON, you can change the mode as shown in the figure on the right. „ When in the inspection mode, malfunction contents can be cleared by continuing to press the ON/OFF button for 5 seconds.

  • Page 104: Self-Diagnosis By Wired Remote Controller

    Si-71A Procedure of Self-Diagnosis by Remote Controller Self-Diagnosis by Wired Remote Controller Explanation If operation stops due to malfunction, the remote controller’s operation LED blinks, and malfunction code is displayed. (Even if stop operation is carried out, malfunction contents are displayed when the inspection mode is entered.) The malfunction code enables you to tell what kind of malfunction caused operation to stop.

  • Page 105: Fault Diagnosis By Wireless Remote Controller

    Procedure of Self-Diagnosis by Remote Controller Si-71A Fault Diagnosis by Wireless Remote Controller If equipment stops due to a malfunction, the operation indicating LED on the light reception section flashes. The malfunction code can be determined by following the procedure described below. (The malfunction code is displayed when an operation error has occurred.
  • Page 106 Si-71A Procedure of Self-Diagnosis by Remote Controller Troubleshooting...

  • Page 107: Remote Controller Display Malfunction Code And Contents

    Procedure of Self-Diagnosis by Remote Controller Si-71A Remote Controller Display Malfunction Code and Contents Malfunction Code Contents/Processing Remarks Failure of PC board ass’y for indoor unit Malfunction of water level system Indoor unit fan motor overload / overcurrent / lock Swing flap motor lock Only Air flow dilection adjustment cannot be set.

  • Page 108: Procedure Of Self-Diagnosis By Led

    Si-71A Procedure of Self-Diagnosis by LED Procedure of Self-Diagnosis by LED Troubleshooting by LED on The Indoor Unit’s Foreword Troubleshooting can be carried out by service monitor LED (green). (Blinks when normal) ò ó ñ : LED on : LED off : LED blinks —...

  • Page 109: Troubleshooting By Remote Controller Display / Led Display

    Troubleshooting by Remote Controller Display / LED Display Si-71A Troubleshooting by Remote Controller Display / LED Display Explanation for Symbols ñ ò ó : Blinks : On : Off — : No connection with troubleshooting • : High probability of malfunction { : Possibility of malfunction …...

  • Page 110: Malfunction Code And Led Display Table

    Si-71A Troubleshooting by Remote Controller Display / LED Display Malfunction Code and LED Display Table Indoor Unit Indoor Unit Indoor Unit LED Remote Location of Malfunction Contents of Malfunction Details of Malfunctions Display Controller Malfunction Note 2 Display (Reference Page) Other PC Board than PC...
  • Page 111 Troubleshooting by Remote Controller Display / LED Display Si-71A System System Outdoor Unit LED Remote Location of Malfunction Contents of Malfunction Details of Malfunctions Display Controller Malfunction Display (Reference Other PC Board Page) (H1P) (H2P) (H3P) than PC Outdoor Indoor Remote Board Unit...

  • Page 112: Failure Of Indoor Unit Pc Board

    Si-71A Troubleshooting by Remote Controller Display / LED Display Failure of Indoor Unit PC Board $4 $4 $4 $4 Remote Controller Display Indoor Unit LED Refer to p.99 Display Applicable Models All indoor unit models Method of Check data from E²PROM. Malfunction Detection Malfunction...

  • Page 113: Malfunction Of Drain Water Level System (Float Type)

    Troubleshooting by Remote Controller Display / LED Display Si-71A Malfunction of Drain Water Level System (Float Type) $6 $6 $6 $6 Remote Controller Display Applicable Models FH(Y)C, FH(Y)K, FH(Y)B, FH(Y), FAY, FVY, FUY Method of By float switch OFF detection Malfunction Detection Malfunction...

  • Page 114: Indoor Unit Fan Motor Lock

    Si-71A Troubleshooting by Remote Controller Display / LED Display Indoor Unit Fan Motor Lock $9 $9 $9 $9 Remote Controller Display Applicable Models FH(Y), FAY, FUY Method of Detection by failure of signal for detecting number of turns to come from the fan motor Malfunction Detection Malfunction...

  • Page 115: Swing Flap Motor Malfunction / Lock

    Troubleshooting by Remote Controller Display / LED Display Si-71A Swing Flap Motor Malfunction / Lock $: $: $: $: Remote Controller Display Applicable Models FH(Y)C, FH(Y)K, FH(Y), FAY, FVY, FUY Method of Utilizes ON/OFF of the limit switch when the motor turns. Malfunction Detection Malfunction...

  • Page 116: Failure Of Capacity Setting

    Si-71A Troubleshooting by Remote Controller Display / LED Display Failure of Capacity Setting $- $- $- $- Remote Controller Display Applicable Models FH(Y)C, FH(Y), FUY, FAY Method of Capacity is determined according to resistance of the capacity setting adaptor and the memory inside the Malfunction IC memory on the indoor unit PC board, and whether the value is normal or abnormal is determined.

  • Page 117: Malfunction Of Heat Exchange Temperature Sensor System

    Troubleshooting by Remote Controller Display / LED Display Si-71A Malfunction of Heat Exchange Temperature Sensor System &7 &7 &7 &7 Remote Controller Display Applicable Models All indoor unit models Method of Malfunction detection is carried out by temperature detected by heat exchanger sensor. Malfunction Detection Malfunction...

  • Page 118: Malfunction Of Suction Air Temperature Sensor System

    Si-71A Troubleshooting by Remote Controller Display / LED Display Malfunction of Suction Air Temperature Sensor System &< &< &< &< Remote Controller Display Applicable Models AII indoor unit models Method of Malfunction detection is carried out by temperature detected by suction air temperature sensor. Malfunction Detection Malfunction...

  • Page 119: Actuation Of Safety Device

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.10 Actuation of Safety Device (3 (3 (3 (3 Remote Controller Display ñ ò ó Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) Method of Actuation of each safety device is detected by safety device input circuit. Malfunction (Safety device unified detection) Detection...

  • Page 120: High Pressure System (Hps) Malfunction

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.11 High Pressure System (HPS) Malfunction (6 (6 (6 (6 Romote Controller Display ñ ò ó ýýý 1(H2P) Outdoor Unit LED A(H1P) 2(H3P) Display Applicable Models R(Y) Method of Continuity of the high pressure switch is detected by the safety device circuitry. Malfunction Detection Malfunction...

  • Page 121: Low Pressure System (Lps) Malfunction

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.12 Low Pressure System (LPS) Malfunction (7 (7 (7 (7 Remote Controller Display ñ ò ó ýýý 1(H2P) Outdoor Unit LED A(H1P) 2(H3P) Display Applicable Models R(Y) Method of Continuity of the low pressure switch is detected by the safety device circuitry. Malfunction Detection Malfunction...

  • Page 122: Malfunction Of Electronic Expansion Valve

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.13 Malfunction of Electronic Expansion Valve (< (< (< (< Remote Controller Display A(H1P) — ýýý 1(H2P) — 2(H3P) — Outdoor Unit LED Display Applicable Models R(Y) Method of With electronic expansion valve malfunction detection, coil current is detected and open and short circuits Malfunction are detected.

  • Page 123: Discharge Pipe Temperature Malfunction

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.14 Discharge Pipe Temperature Malfunction )6 )6 )6 )6 Remote Controller Display ñ ó ó Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) Method of Malfunction is detected according to temperature detected by discharge pipe temperature sensor. Malfunction Detection „...

  • Page 124: Malfunction Of High Pressure Switch

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.15 Malfunction of High Pressure Switch +6 +6 +6 +6 Remote Controller Display ñ ò ò Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) Method of Continuity of the high pressure switch is detected by the safety device circuitry. Malfunction Detection Malfunction...

  • Page 125: Malfunction Of Outdoor Temperature Sensor System

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.16 Malfunction of Outdoor Temperature Sensor System +< +< +< +< Remote Controller Display ñ ò ò Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) Malfunction Case where the outdoor temperature sensor has a short or open circuit Decision Conditions „...

  • Page 126: Malfunction Of Discharge Pipe Temperature Sensor System

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.17 Malfunction of Discharge Pipe Temperature Sensor System -6 -6 -6 -6 Remote Controller Display ñ ò ò Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) Malfunction Case where the discharge pipe temperature sensor has a short or open circuit Decision Conditions „...

  • Page 127: Malfunction Of Heat Exchanger Temperature Sensor System

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.18 Malfunction of Heat Exchanger Temperature Sensor System -9 -9 -9 -9 Remote Controller Display ñ ò ò Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) Malfunction Case where the heat exchanger temperature sensor has a short or open circuit Decision Conditions „...

  • Page 128: Lack Of Gas Malfunction

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.19 Lack of Gas Malfunction 83 83 83 83 Remote Controller Display A(H1P) — ýýý 1(H2P) — 2(H3P) — LED Display Applicable Models R(Y) Method of Lack of gas is detected according to discharge pipe temperature. Malfunction Detection Malfunction...

  • Page 129: Reverse Phase

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.20 Reverse Phase 84 84 84 84 Remote Controller Display ñ ó ò Outdoor Unit LED A(H1P) 1(H2P) 2(H3P) Display Applicable Models R(Y) „ 3-phase equipment only Method of Reverse phase detection circuit detects the phase of each phase and determines whether it is normal or Malfunction reverse phase.

  • Page 130: Malfunction Of Transmission (Between Indoor And Outdoor Unit)

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.21 Malfunction of Transmission (Between Indoor and Outdoor Unit) 87 87 87 87 Remote Controller Display A(H1P) — ýýý 1(H2P) — 2(H3P) — LED Display Applicable Models R(Y) Method of Microcomputer checks if transmission between indoor and outdoor units is normal. Malfunction Detection Malfunction...
  • Page 131 Troubleshooting by Remote Controller Display / LED Display Si-71A Troubleshooting 2 Continued from previous page NO (ON or OFF) Is H1P blinking? Turn the power Check of supply off once and outdoor unit then back on. microcom- puter normal Resets normally. Is H1P blinking? Could be outside cause (noise, etc.).

  • Page 132: Malfunction Of Transmission (Between Indoor Unit And Remote Controller)

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.22 Malfunction of Transmission (Between Indoor Unit and Remote Controller) 88 88 88 88 Remote Controller Display A(H1P) — ýýý 1(H2P) — 2(H3P) — LED Display Applicable Models R(Y) Method of Microcomputer checks if transmission between indoor unit and remote controller is normal.

  • Page 133: Transmission Error Between Main Remote Controller And Sub Remote Controller

    Troubleshooting by Remote Controller Display / LED Display Si-71A 6.23 Transmission Error Between Main Remote Controller and Sub Remote Controller 8; 8; 8; 8; Remote Controller Display LED Display Refer to page Applicable Models All models of indoor unit Method of In case of controlling with 2- remote controller, check the system using microcomputer if signal Malfunction transmission between indoor unit and remote controller (main and sub) is normal.

  • Page 134: Failure Of Field Setting Switch

    Si-71A Troubleshooting by Remote Controller Display / LED Display 6.24 Failure of Field Setting Switch 8$ 8$ 8$ 8$ Remote Controller Display A(H1P) — ýýý 1(H2P) — 2(H3P) — LED Display Applicable Models Standard models Supposed Causes <common> „ Failure of indoor or outdoor unit PC board „...
  • Page 135 Troubleshooting by Remote Controller Display / LED Display Si-71A Troubleshooting...
  • Page 136 Si-71A 3DUW#9 3DUW#9 3DUW#9 3DUW#9 5HPRYDO#3URFHGXUH 5HPRYDO#3URFHGXUH 5HPRYDO#3URFHGXUH 5HPRYDO#3URFHGXUH 1. For FHYC71K..................127 1.1 Removal of Switch Box Cover..............127 1.2 Removal of Fan Motor................128 1.3 Removal of Suction Grille..............129 1.4 Removal of Air Filter................130 1.5 Removal of Decoration Cover ..............131 1.6 Removal of Decoration Panel...............132 1.7 Removal of Horizontal Vane..............133 1.8 Removal of Swing Motor ..............135 1.9 Removal of Switch Box Cover..............137...
  • Page 137 Si-71A 5.5 Removal of Heat Exchanger ..............179 6. For R(Y)71K ..................180 6.1 Removal of External Casing..............180 6.2 Removal of Outdoor Unit Fan and Fan Motor ........181 6.3 Removal of Outdoor Unit PC Board .............183 6.4 Removal of Electrical Parts Box ............184 6.5 Removal of Electronic Expansion Valve and Solenoid Valve....186 6.6 Removal of 4-Way Valve and Coil............187 6.7 Removal of Compressor...............188...

  • Page 138: For Fhyc71K

    Si-71A For FHYC71K 1. For FHYC71K Removal of Switch Box Cover Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points 1. Removing the cover from the control PCB side Loosen the 1 screw, and pull the cover toward the inside and pull it down.

  • Page 139: Removal Of Fan Motor

    For FHYC71K Si-71A Removal of Fan Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points 1. Removing the switch box Remove the 5 screws, and pull the switch box down. 2. Removing the fan Remove the resin nut and rotation stopper from the fan.

  • Page 140: Removal Of Suction Grille

    Si-71A For FHYC71K Removal of Suction Grille Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗When closing, push up the grille Push the two buttons simultaneously and pull the slowly. suction grille down slowly. With the suction grille open at an angle of 45º, lift it up to remove it.

  • Page 141: Removal Of Air Filter

    For FHYC71K Si-71A Removal of Air Filter Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Open the suction grille. (See the removal procedure of suction grille.) Disengage the hooks of the air filter by pulling the filter downward at an angle, and remove the filter.

  • Page 142: Removal Of Decoration Cover

    Si-71A For FHYC71K Removal of Decoration Cover Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points To remove the decoration cover, pull the inside part (suction grille side) down. Disengage the strap (fall prevention strap) of the corner decoration cover from the pin.

  • Page 143: Removal Of Decoration Panel

    For FHYC71K Si-71A Removal of Decoration Panel Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Loosen the 4 retaining Structure of mounting fixture screws from the decoration panel. The decoration panel is attached with 4 mounting fixtures.

  • Page 144: Removal Of Horizontal Vane

    Si-71A For FHYC71K Removal of Horizontal Vane Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove seal materials in the Locate 9 screws on the following sequence. d→f,c→e decoration panel under the seal materials.
  • Page 145 For FHYC71K Si-71A Step Procedure Points Remove the 14 screws on the two remaining sides and open the covers. Reassembly ∗Check to make sure the heat insulation is installed in the air outlet section as shown below. (Improper heat insulation installation results in condensation of water.) Seal material Heat insulation material...

  • Page 146: Removal Of Swing Motor

    Si-71A For FHYC71K Removal of Swing Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Only the decoration cover needs to Remove the decoration cover located immediately be removed to take out the swing below the cooling pipe.
  • Page 147 For FHYC71K Si-71A Step Procedure Points Disconnect the connector of the swing motor. Caution ∗Caution during swing motor installation After installing the swing motor, be sure to turn on the power switch for reset (for initializing the vane positions). Be sure to engage the gears on the motor side and panel sides.

  • Page 148: Removal Of Switch Box Cover

    Si-71A For FHYC71K Removal of Switch Box Cover Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points 1. Removing the cover from the control PCB side Loosen the 1 screw, and pull the cover toward the inside and pull it down.

  • Page 149: Removal Of Fan Motor

    For FHYC71K Si-71A 1.10 Removal of Fan Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points 1. Removing the switch box Remove the 5 screws, and pull the switch box down. 2. Removing the fan Remove the resin nut and rotation stopper from the fan.

  • Page 150: Removal Of Drain Pan

    Si-71A For FHYC71K 1.11 Removal of Drain Pan Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Drain water from the drain hole. Remove the 5 drain pan mounting screws. Pull down the drain pan straight down.

  • Page 151: Removal Of Drain Pump And Drain Hose

    For FHYC71K Si-71A 1.12 Removal of Drain Pump and Drain Hose Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points 1 Removing the drain pump Remove the drain pan. Caution ∗Be sure to install the pipe clip during installation to prevent water leaks.
  • Page 152 Si-71A For FHYC71K Step Procedure Points 2.Removing the drain hose Loosen the hose band using Caution a screwdriver. ∗The drain hose may contain water. Make sure there is no water in the drain hose, or use a container to receive water from the hose. Pull out the drain hose.

  • Page 153: For Fhy71F

    For FHY71F Si-71A 2. For FHY71F Removal of Air Filter and Suction Grille Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points The air filter is mounted behind the suction grille. Push the 2 tabs and open the suction grilles.

  • Page 154: Removal Of Electrical Parts And Pc Boards

    Si-71A For FHY71F Removal of Electrical Parts and PC Boards Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the air filter according to the procedures for removing the air filter and suction grille. After removing the reinforce stay (1 installation screw), loosen the 2 screws of the...
  • Page 155 For FHY71F Si-71A Step Procedure Points Pull open the control box and let it hang by the 2 locations in the rear. Electrical parts can now be removed. Disconnect the connector mounted on the PC board. Remove the PC board installation screw.

  • Page 156: Removal Of Horizontal Blade

    Si-71A For FHY71F Removal of Horizontal Blade Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Remove the left side panel according to the procedure for removing the fan bearing. Remove the screw of the horizontal blade fastener.

  • Page 157: Removal Of Fan Rotor An Motor

    For FHY71F Si-71A Removal of Fan Rotor an Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Push the 2 tabs of the fan housing toward the inside with your fingers, and pull out the fan housing.
  • Page 158 Si-71A For FHY71F Step Procedure Points Slide the intermediate bearing to the right and remove the fan rotor ass’y. Disconnect the 2 fan motor 2 connectors connecting connectors. Connector (1) handles high voltage (220-240 V), so be sure to turn of the Remove the 2 fan motor power supply before disconnecting.

  • Page 159: Removal Of Fan Bearing

    For FHY71F Si-71A Removal of Fan Bearing Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the fan rotor according to the procedures for removing the fan rotor and fan motor. Remove the left side panel installation screw.

  • Page 160: Removal Of Bottom Panel And Drain Pan

    Si-71A For FHY71F Removal of Bottom Panel and Drain Pan Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the air filter according to its removal procedure. Remove the right side panel installation screw.
  • Page 161 For FHY71F Si-71A Step Procedure Points Remove the 5 bottom panel installation screws (2 each on the left and right, 3 in the rear), and remove the bottom panel. Remove the rear surface screws (2 each on the left and right), and remove the center screw while supporting the bottom panel from underneath.
  • Page 162 Si-71A For FHY71F Step Procedure Points Lower the front surface of (1) Lower the front surface of the drain the drain pan, remove the pan. hooking part of the rear (2) Remove the hooking part of the surface, and remove the rear surface.

  • Page 163: Removal Of Swing Motor

    For FHY71F Si-71A Removal of Swing Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the right side panel according to the procedures for removing the bottom panel and drain pan. Disconnect the connector connected to the swing motor.

  • Page 164: For Fuy71/100/125Fj

    Si-71A For FUY71/100/125FJ 3. For FUY71/100/125FJ Removal of Air Filter Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Opening suction grille Push two tabs on suction grille toward the center of grille at the same time. Pull down suction grille.

  • Page 165: Removal Of Suction Grille

    For FUY71/100/125FJ Si-71A Removal of Suction Grille Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Unhook two drop-prevention strings while supporting suction grille with hand. Open suction grille forward for approx. 45 degree. Disengage three hooks located at rear side of the grille to remove suction...

  • Page 166: Removal Of Fan

    Si-71A For FUY71/100/125FJ Removal of Fan Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Remove two mounting screws to dismount switch box cover. Remove suction air temperature thermistor attached to bell mouth. Bell mouth is mounted with tree screws.
  • Page 167 For FUY71/100/125FJ Si-71A Step Procedure Points Remove bell mouth by sliding to piping direction. To dismount fan, remove washer based nut using double-ended wrench Remove fan by pulling down. Removal Procedure...

  • Page 168: Removal Of Fan Motor

    Si-71A For FUY71/100/125FJ Removal of Fan Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Poins Removing fan motor a. Disconnect connector b. Remove lead wire retaining plate Caution ∗Fan motor can be removed without removing the lead wire retaining plate.

  • Page 169: Removal Of Drain Pan

    For FUY71/100/125FJ Si-71A Removal of Drain Pan Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove suction grille according to the Removal of air filter and that of suction grille. To dismount three corner sections A, B and C, remove a flocked screw.
  • Page 170 Si-71A For FUY71/100/125FJ Step Procedure Points Arrange wire harness to avoid interference with next process. Caution ∗This work should be done by two personnel. ∗If drain water remain in the pan, it may drop and stain on the floor. Make sure to check if no drain water remain in the pan, or cover the floor with vinyl sheet before disassembling work.

  • Page 171: Removal Of Drain Pump

    For FUY71/100/125FJ Si-71A Removal of Drain Pump Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Drain pump is located at piping side. Cut clamp material of hose, Caution ∗When reconnect drain hose with the and disconnect hose from pump.

  • Page 172: Removal Of Swing Motor

    Si-71A For FUY71/100/125FJ Removal of Swing Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove suction grille according to the Removal of suction grille Swing motor is located at the diagonal position of piping. Remove two mounting screws for swing motor cover.

  • Page 173: Removal Of Air Flow Control Blade

    For FUY71/100/125FJ Si-71A Removal of Air Flow Control Blade Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points To remove horizontal blade, press down tabs located at both end of blade and pull them forward.

  • Page 174: For Fay71F (A)

    Si-71A For FAY71F (A) 4. For FAY71F (A) Removal of Air Filter Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Hold the air filter tabs with your hands and pull out. Pull the air filter out. Removal Procedure...

  • Page 175: Removal Of Slide Panel, Operation Display Cover, And Front Grille

    For FAY71F (A) Si-71A Removal of Slide Panel, Operation Display Cover, and Front Grille Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Remove the left and right The wiring diagram is applied to the side panels.

  • Page 176: Removal Of Electrical Parts Box

    Si-71A For FAY71F (A) Removal of Electrical Parts Box Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the left and right side The left and right side panels have to panels, operation display cover and be taken off in order to remove the front grille according to the front grille.

  • Page 177: Removal Of Pc Board

    For FAY71F (A) Si-71A Removal of PC Board Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the outer panels according to the procedure for removing the electrical parts box. Disconnect the front side wiring connector connected to the PC board.

  • Page 178: Removal Of Swing Louvre Unit

    Si-71A For FAY71F (A) Removal of Swing Louvre Unit Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the electrical parts box according to its removal procedure. Remove the horizontal blade. Remove the swing Louvre unit.

  • Page 179: Removal Of Fan Motor

    For FAY71F (A) Si-71A Removal of Fan Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove side panels and other Use 2.5 mm hexagon nut driver. external casing, and electrical parts box according to their removal procedures.

  • Page 180: Removal Of Drain Pan

    Si-71A For FAY71F (A) Removal of Drain Pan Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗If removing the drain pan: Carry The bottom panel is fastened to the out pump down, disconnect the unit installation plate by 3 screws.
  • Page 181 For FAY71F (A) Si-71A Step Procedure Points Remove the air discharge Center of air discharge section also unit. (7 screws) screw fastened. Remove the drain pan. 1 Pull left side toward yourself. 2 Move the drain hose to the right until it comes off.

  • Page 182: Removal Of Heat Exchanger

    Si-71A For FAY71F (A) Removal of Heat Exchanger Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Before dismounting a heat exchanger, make sure to proceed pump down refrigerant to outdoor Top plate unit and disconnect the connection pipe and wiring, then remove the indoor unit.

  • Page 183: Removal Of Fan Rotor

    For FAY71F (A) Si-71A Removal of Fan Rotor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the heat exchanger You can also remove the auxiliary according to its removal procedure. electric heater without removing the heat exchanger.

  • Page 184: For Fvy71L~125L

    Si-71A For FVY71L~125L 5. For FVY71L~125L Removal of Suction Grille and Air Filter Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Removing air filter Pull tabs of suction grille to open the grille slightly. Lift up air filter Removal Procedure...
  • Page 185 For FVY71L~125L Si-71A Step Procedure Points Removing suction grille Remove two fixing screws located at both left and right sides of suction grille. Open widely and lift suction grille to remove it. Removal Procedure...

  • Page 186: Removal Of Electric Parts And Remote Controller

    Si-71A For FVY71L~125L Removal of Electric Parts and Remote Controller Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points To remove switch box cover, dismount screw (A), loosen screw (B) and slide the cover to right side.
  • Page 187 For FVY71L~125L Si-71A Step Procedure Points Remove two screws to dismount front panel. Remove four screws to dismount remote controller. Removal Procedure...

  • Page 188: Removal Of Fan Rotor And Fan Motor

    Si-71A For FVY71L~125L Removal of Fan Rotor and Fan Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Removing fan rotor Turn bell mouth in CW to remove it. Remove hexagon nut and turning stopper plate to disassemble fan rotor.

  • Page 189: Removal Of Swing Motor

    For FVY71L~125L Si-71A Removal of Swing Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Disconnect harness for swing motor and one for limit switch at connector section. Remove four screws to dismount discharge assembly.

  • Page 190: Removal Of Heat Exchanger

    Si-71A For FVY71L~125L Removal of Heat Exchanger Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Removing switch box Disconnect connector for swing motor and one for limit switch. Remove heat exchanger thermistor from PCB. Remove three mounting screws to dismount switch box and air partition plate.

  • Page 191: For R(Y)71K

    For R(Y)71K Si-71A 6. For R(Y)71K Removal of External Casing Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points Remove the 8 top plate screws. Remove the screw of the front piping cover. Remove the screw of the front casing and remove by pushing downward.

  • Page 192: Removal Of Outdoor Unit Fan And Fan Motor

    Si-71A For R(Y)71K Removal of Outdoor Unit Fan and Fan Motor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the front piping cover, etc., according to the procedure for removing the external casing. Remove the 4 screws and disconnect the 8 tabs fastening the air discharge...
  • Page 193 For R(Y)71K Si-71A Step Procedure Points Locate the 2 clamps holding the fan motor lead wire in place. ∗4 clamps in RY100 to 140K. Caution during motor installation Be sure to secure the motor lead wire with the clamp. Loose lead wire can be caught by fan and damaged.

  • Page 194: Removal Of Outdoor Unit Pc Board

    Si-71A For R(Y)71K Removal of Outdoor Unit PC Board Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the top plate, front casing and side casing according the procedure for removing the external casing, etc.

  • Page 195: Removal Of Electrical Parts Box

    For R(Y)71K Si-71A Removal of Electrical Parts Box Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the top plate, front casing <In case of cooling only model> If the lead wire is clamped by the and side casing according the piping, etc., remove the clamp.
  • Page 196 Si-71A For R(Y)71K Step Procedure Points 3) Remove the ambient air thermistor. Disconnect the motor operated valve coil, and crank case heater Note : connectors from the PC If not dismounting the rear/side casing, board. remove the 2 screws of the electrical parts box.

  • Page 197: Removal Of Electronic Expansion Valve And Solenoid Valve

    For R(Y)71K Si-71A Removal of Electronic Expansion Valve and Solenoid Valve Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Make sure the refrigerant is completely empty. Remove the electronic expansion valve cover. The motor operated valve is removed by pulling while turning the electronic...

  • Page 198: Removal Of 4-Way Valve And Coil

    Si-71A For R(Y)71K Removal of 4-Way Valve and Coil Procedure Waring Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Make sure the refrigerant is completely empty. Remove the external casing, etc., and electrical parts according to their removal procedures.

  • Page 199: Removal Of Compressor

    For R(Y)71K Si-71A Removal of Compressor Procedure Warning Be sure to turn off all power supplies before disassembling work. Step Procedure Points ∗Remove the external casing, etc., according to its removal procedure. Remove the compressor sound-proofing. Disconnect the compressor lead wire from the compressor terminal.
  • Page 200 Si-71A For R(Y)71K Step Procedure Points Disconnect the crank case heater’s spring and remove the heater. Remove the compressor’s 3 washer based nuts. Use a T-type box spanner. Lift the compressor slightly and draw out toward yourself. Removal Procedure...
  • Page 201 For R(Y)71K Si-71A Removal Procedure...

  • Page 202: 3Duw#: $Sshqgl

    Si-71A 3DUW#: 3DUW#: 3DUW#: 3DUW#: $SSHQGL[ $SSHQGL[ $SSHQGL[ $SSHQGL[ 1. Piping Diagrams..................192 1.1 Piping Diagrams ...................192 2. Wiring Diagram ...................203 2.1 Indoor Unit....................203 2.2 Outdoor Units (50Hz) ................216 2.3 Outdoor Units (60Hz) ................220 2.4 Outdoor Unit (HeaT Pump) ..............223 Appendix...

  • Page 203: Piping Diagrams

    1. Piping Diagrams Piping Diagrams FHC35K / FHK35K / FHB35K / FH35F + R35G, FHC50K / FHK50K / FHB50K / FH45F + R50G, FHC60K / FHK60K / FHB60K / FH60F + R60G FHYC71K / FHK71F / FHYB71F / FH71F / FAY71F(A) / FVY71F + R71K...
  • Page 204 Si-71A Piping Diagrams FHYC100K / FHYB100K / FH100K / FAY100K / FVY100F + R100K, FHYC125K / FHYB125K / FH125K / FVY125F + R125K FUY71FJ + R71K DU427-6109A Appendix...
  • Page 205 Piping Diagrams Si-71A FUY100FJ + R100K, FUY125FJ + R125K DU428-6141A R71K / R100K / R125K (Twin System) 3D018539 Appendix...
  • Page 206 Si-71A Piping Diagrams R140KY1 (Twin System) 3D000191 R140KTAL (Twin System) 3D000222 Appendix...
  • Page 207 Piping Diagrams Si-71A R140KY1 (Triple System) 3D000192 R140KTAL (Triple System) 3D000224 Appendix...
  • Page 208 Si-71A Piping Diagrams FHYC35K / FHYK35FJ / FHYB35F / FHY35F + RY35FV1A FHYC50K / FHYK45FJ / FHYB45F / FHY45F + RY50GV1A Appendix...
  • Page 209 Piping Diagrams Si-71A FHYC60K / FHYK60FJ / FHYB60F / FHY60F + RY60GV1A FHYC71K / FHYK71FJ / FHYB71F / FHY71F / FAY71F / FVY71F + RY71K DU427-6108B Appendix...
  • Page 210 Si-71A Piping Diagrams FHYC100 / FHYC125K / FHYB100F / FHYB125F / FHY100F / FHY125F / FAY100F / FVY100F / FVY125F + RY100K / RY125K DU428-6140 FUY71FJ + RY71K DU427-6108B Appendix...
  • Page 211 Piping Diagrams Si-71A FUY100FJ + RY100K, FUY125FJ + RY125K DU428-6140 RY71K / RY100K / RY125K (Twin System) 3D018540 Appendix...
  • Page 212 Si-71A Piping Diagrams RY140KY1(Twin System) 3D000187 RY140KTAL (Twin System) 3D000216 Appendix...
  • Page 213 Piping Diagrams Si-71A RY140KY1 (Triple System) 3D000188 RY140KTAL (Triple System) 3D000217 Appendix...

  • Page 214: Wiring Diagram

    Si-71A Wiring Diagram 2. Wiring Diagram Indoor Unit FHC35KVE / FHC50KVE / FHC60KVE Appendix...
  • Page 215 Wiring Diagram Si-71A FHK35FV1~FHK71FV1 Appendix...
  • Page 216 Si-71A Wiring Diagram FHB35FV1~FHB60FV1 Appendix...
  • Page 217 Wiring Diagram Si-71A FH35FVE~FH125FVE Appendix...
  • Page 218 Si-71A Wiring Diagram FHYC35KVE~FHYC140KVE Appendix...
  • Page 219 Wiring Diagram Si-71A FHYK35FJV1~FHYK70FJV1 Appendix...
  • Page 220 Si-71A Wiring Diagram FHYB35FV1~FHYB71FV1 Appendix...
  • Page 221 Wiring Diagram Si-71A FHYB100FV1 / FHYB125FV1 Appendix...
  • Page 222 Si-71A Wiring Diagram FHY35FVE~FHY125FVE Appendix...
  • Page 223 Wiring Diagram Si-71A FAY71F(A)VE / FAY100F(A)VE Appendix...
  • Page 224 Si-71A Wiring Diagram FVY71FV1~FVY125FV1 Appendix...
  • Page 225 Wiring Diagram Si-71A FUY71FJV1 / FUY100FJV1 / FUY125FJV1 Appendix...
  • Page 226 Si-71A Wiring Diagram FVY71LVE / FVY100LVE / FVY125LVE Appendix...

  • Page 227: Outdoor Units (50Hz)

    Wiring Diagram Si-71A Outdoor Units (50Hz) R35GV1 DW523-555-1A R50GV1 Appendix...
  • Page 228 Si-71A Wiring Diagram R60GV1 R71KV1 DU427-5399C Appendix...
  • Page 229 Wiring Diagram Si-71A R100KV1 DU428-5349E R71KY1 DU427-5401B Appendix...
  • Page 230 Si-71A Wiring Diagram R100KY1 / R125KY1 DU428-5351D R140KY1 Appendix...

  • Page 231: Outdoor Units (60Hz)

    Wiring Diagram Si-71A Outdoor Units (60Hz) R50GVAL R60GVAL 3D005750 Appendix...
  • Page 232 Si-71A Wiring Diagram R71KVAL 3D014723A R100KVAL 3D014724A Appendix...
  • Page 233 Wiring Diagram Si-71A R125KTAL 3D014725 R140KTAL R S T POWER SUPPLY ( NOTE 2 ) 3~60Hz 220V S1LP t˚ t˚ t˚ X23A X10A X24A X20A X21A X12A SWITCH BOX X11A t˚ S1PH Ry Ry F3 F4 X25A X14A X15A NOTES ) :TERMINAL , :CONNECTOR , : WIRE CLAMP ,...

  • Page 234: Outdoor Unit (Heat Pump)

    Si-71A Wiring Diagram Outdoor Unit (HeaT Pump) RY35FV1A 3D001431A RY50GV1A 3D000794 Appendix...
  • Page 235 Wiring Diagram Si-71A RY60GV1A RY71KV1 Appendix...
  • Page 236 Si-71A Wiring Diagram RY71KY1 DU427-5397B RY100KY1 / RY125KY1 DU428-5347D Appendix...
  • Page 237 Wiring Diagram Si-71A RY140KY1 3D000102A RY140KTAL 3D000104A Appendix...
  • Page 238 Si-71A ,QGH[ ,QGH[ ,QGH[ ,QGH[ 1XPHULFV Emergency Operation of Outdoor Units ....43 Existence of DTP Switch, Jumper and BS .... 42 1999 New Models Functions ........2 4-way Valve Control ..........65 F3 ................ 112 Failure of Capacity Setting ........105 A1 .................101 Failure of Field Setting Switch ......
  • Page 239 Si-71A Main/Sub Setting When Using 2 Remote Controllers ....28 No. of Connected Twin System Indoor Units ..24 MAIN/SUB Switch (SS1) ........25 Maintenance Inspections ........77 Maintenance Mode Setting Operation Flowchart (RY71 - 140K) 40 ..............44 Cooling/Program Dry Operation ..... 49 41 ..............44 Heating ............
  • Page 240 Si-71A Reverse Phase .............118 Safety Cautions ............vii Self-Diagnosis by Wired Remote Controller ...93 Sensor Date Display ..........44 Settings Concerning Maintenance ......30 Simulated Operation Function ........67 Solenoid Valve Control in Cooling Operation ..69 Standard Conditions ..........77 Swing Flap Motor Malfunction / Lock ....104 T2 Disconnection Thermostat OFF Control ...66 The INSPECTION/TEST Button ......92 Thermistor Temperature...
  • Page 241 Si-71A Index...
  • Page 242 Si-71A 'UDZLQJV#)#)ORZ#&KDUWV 'UDZLQJV#)#)ORZ#&KDUWV 'UDZLQJV#)#)ORZ#&KDUWV 'UDZLQJV#)#)ORZ#&KDUWV 1XPHULFV How to Handle Request for Maintenance ..... 80 4-way Valve Control ..........65 Indoor Unit Fan Motor Lock ......... 103 Actuation of Safety Device ........108 After Setting ............27 Lack of Gas Malfunction ........117 & Low Pressure System (LPS) Malfunction ....
  • Page 243 Si-71A Removal of Air Filter and Suction Grille ....142 Equipment Operates but does not Removal of Air Flow Control Blade ......162 Provide Cooling......... 86 Removal of Bottom Panel and Drain Pan ....149 Equipment Operates but does not Removal of Compressor ........188 Provide Heating.
  • Page 244 Head office: Zandv oordestr aat 300, B-8400 Oostende, Belgium Umeda Center Bldg., 4-12, Nakazaki-Nishi 2-chome, Kita-ku, Osaka, 530-8323 Japan Toky o office: Shinjuku Sumitomo Bldg., 6-1 Nishi-Shinjuku 2-chome , Shinjuku-ku, Tokyo, 163-0235 Japan l For further improvement, specifications or designs are subject to change without prior notice. Printed in Japan 09/1999 AK...

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