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Fujitsu Comfort Series Service Manual

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AIR TO WATER
Comfort series
SERVICE MANUAL
OUTDOOR
WOYA100KLT
SA_CF003EF_01
2021.03.01

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  • Page 1 AIR TO WATER Comfort series SERVICE MANUAL OUTDOOR WOYA100KLT SA_CF003EF_01 2021.03.01...
  • Page 2 Notices: • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. Copyright © 2021 Fujitsu General Limited. All rights reserved.
  • Page 3 CONTENTS 1. GENERAL INFORMATION UNIT 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. FIELD WORKING...
  • Page 5 INNOVATIVE SOLUTION OF DOMESTIC HEATING 1. GENERAL INFORMATION UNIT 2021.03.01 SA_CH01_CF003EF_01...
  • Page 6 CONTENTS 1. GENERAL INFORMATION UNIT 1. Specifications....................01-1 1-1. Outdoor unit........................01-1 2. Dimensions....................01-6 2-1. Outdoor unit........................01-6...
  • Page 7 1. Specifications 1-1. Outdoor unit ¢ Nominal capacity and nominal input Hydraulic indoor unit WSYA100ML3 Model name Outdoor unit WOYA100KLT Power supply 1 Ø 230 V ~ 50 Hz Heating capacity Nominal 7.50 -15°C/+45°C Input power Nominal 3.75 Nominal 2.00 Heating capacity Nominal 7.10...

  • Page 8: Technical Specifications

    ¢ Technical specifications Outdoor unit model name WOYA100KLT Material Steel sheet Enclosure Beige Color Approximate color of Munsell 10YR 7.5/1.0NN Dimensions 998 × 940 × 320 (H × W × D) Gross 1,176 × 1,027 × 445 Weight Gross Dimensions 966 ×...

  • Page 9: Product Fiche

    ¢ Product fiche Hydraulic indoor unit WSYA100ML3 Model name Outdoor unit WOYA100KLT Temperature application °C Declared load profile — — Seasonal space heating energy efficiency class A+++ Water heating energy efficiency class — — Rated heat output Supplementary heater Annual energy consumption 5,083 3,875 Annual electricity consumption...

  • Page 10: Product Information

    — — Daily fuel consumption Not applicable fuel FUJITSU GENERAL (EURO) GmbH Contact details Fritz-Vomfelde-Straße 26-32, 40547 Düsseldorf, Germany NOTES: • Product information according to Commission Delegated Regulation (EU) 811/2013 • Product information is based on the average climate condition.

  • Page 11: Electrical Specifications

     Energy efficiency value Application: 35°C Hydraulic indoor unit WSYA100ML3 Model name Outdoor unit WOYA100KLT Seasonal energy efficiency of heat pump for space heating Type of temperature control Outdoor sensor (included in the package) — Modulating room thermostat (outdoor sensor included in the package) —...
  • Page 12 2. Dimensions 2-1. Outdoor unit ¢ Model: WOYA100KLT Unit: mm 35.7 Top view 3 Way valve (Liquid) 3 Way valve (Gas) 129.1 Pipe port Ф28 Ф28 85.3 Cable port Ф28: Cable port Pipe port Cable port Pipe port Pipe port Pipe port Front view Side view...
  • Page 13 INNOVATIVE SOLUTION OF DOMESTIC HEATING 2. TECHNICAL DATA AND PARTS LIST 2021.03.01 SA_CH02_CF003EF_01...
  • Page 14 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Outdoor unit parts list.................02-1 1-1. Model: WOYA100KLT ....................02-1...
  • Page 15 1. Outdoor unit parts list 1-1. Model: WOYA100KLT ¢ Exterior parts and chassis - (02-1) - 1-1. Model: WOYA100KLT 1. Outdoor unit parts list...

  • Page 16: Service Part

    Item no. Part no. Part name Service part 9383880001 Top panel assy ♦ 9381013005 Protective net ♦ 9375361013 Net rubber ♦ 9900984038 Thermistor (Heat exchanger) ♦ 9900727154 Thermistor assy ♦ 9383607004 Thermo holder ♦ 9383874017 Right panel sub assy ♦ 9383879005 Rear pipe cover ♦...
  • Page 17 ¢ Compressor - (02-3) - 1-1. Model: WOYA100KLT 1. Outdoor unit parts list...
  • Page 18 Item no. Part no. Part name Service part 9383858017 Sound insulation unit ♦ 9900565091 Thermistor (Outdoor temp.) ♦ 9900186029 Pressure switch ♦ 9374425709 4-way valve assy ♦ 9970110153 Solenoid ♦ 9970178122 Pressure sensor ♦ 9384848024 Accumulator assy ♦ 9970095030 Expansion valve coil ♦...

  • Page 19: Troubleshooting

    INNOVATIVE SOLUTION OF DOMESTIC HEATING 3. TROUBLESHOOTING 2021.03.01 SA_CH03_CF003EF_01...

  • Page 20: Error Display

    1 ERROR DISPLAY 1-1 HYDRAULIC UNIT DISPLAY Interface card DIP SW LED2 (green) LED1 (red) figure 1 - Location of DIP switches and diodes on the hydraulic unit interface card LED display Error contents Troubleshooting LED 2 (green) LED 1 (red) Serial communication error 1, 2 Combination error...

  • Page 21: Outdoor Unit Display

    1-2 OUTDOOR UNIT DISPLAY Display when an error occurs. You can determine the operating status by the lighting up and blinking of the LED lamp. PUMP PEAK POWER/ DOWN NOISE ERROR MODE (L1) (L2) (L3) (L4) (L5) (L6) LED display part Blink ●...

  • Page 22: Troubleshooting With Error Code

    2 TROUBLESHOOTING WITH ERROR CODE Indicate or Display: Troubleshooting 1 Hydraulic unit : Outdoor unit : No indication OUTDOOR UNIT Error Method: Green Red Serial communication error (Serial Reverse Transfer Error) n : n times blinking Detective details: Detective Actuators: When the hydraulic unit cannot receive the serial signal from Outdoor unit Outdoor unit Main PCB more than 2minutes after power ON, or the hydraulic unit cannot receive...
  • Page 23 Indicate or Display: Troubleshooting 2 Hydraulic unit : Outdoor unit : HYDRAULIC UNIT Error Method: Green Red Mode Error L1 L2 Serial communication error (Serial Forward Transfer Error) n : n times blinking : Light OFF : Light ON n : n times blinking Detective details: Detective Actuators: When the outdoor unit cannot properly receive the serial signal from...
  • Page 24 Troubleshooting 3 Indicate or Display: Hydraulic unit : Outdoor unit : HYDRAULIC UNIT Error Method: Green Red Mode Error L1 L2 Combination error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: 1.
  • Page 25 Indicate or Display: Troubleshooting 4 Hydraulic unit : Outdoor unit : No indication HYDRAULIC UNIT Error Method: Green Red UART communication error n : n times blinking Detective details: Detective Actuators: When the UART connection fails for 25 seconds. Hydraulic unit Interface PCB Hydraulic unit Main PCB Forecast of Cause: 1.
  • Page 26 Troubleshooting 5 Indicate or Display: Hydraulic unit : Outdoor unit : No indication HYDRAULIC UNIT Error Method: Green Red Hydraulic unit Heat Exchanger Thermistor Error n : n times blinking Detective details: Detective Actuators: Hydraulic unit interface PCB Circuit Hydraulic unit thermistor is open or short is detected always. Heat Exchanger Thermistor Forecast of Cause : 1.
  • Page 27 Troubleshooting 6 Indicate or Display: OUTDOOR UNIT Error Method: Outdoor unit : Hydraulic unit : Mode Error L1 L2 Green Red Outdoor unit main PCB error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Access to EEPROM failed due to some cause after outdoor unit started.
  • Page 28 Troubleshooting 7 Indicate or Display: Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Inverter PCB error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Outdoor unit Inverter PCB...
  • Page 29 Troubleshooting 8 Indicate or Display: Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 IPM error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Outdoor unit Inverter PCB When the signal from FO terminal of IPM is "L"(=0V)
  • Page 30 Indicate or Display: Troubleshooting 9 Outdoor unit : Hydraulic unit : OUTDOOR UNIT Error Method: Mode Error L1 L2 Green Red Discharge Thermistor Error : Light OFF : Light ON n : n times blinking n : n times blinking Detective Actuators: Detective details: Discharge temperature thermistor...
  • Page 31 Indicate or Display: Troubleshooting 10 Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Compressor Thermistor Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Compressor temperature thermistor...
  • Page 32 Indicate or Display: Troubleshooting 11 Outdoor unit : Hydraulic unit : OUTDOOR UNIT Error Method: Mode Error L1 L2 Green Red Outdoor unit Heat Exchanger Thermistor Error : Light OFF : Light ON n : n times blinking n : n times blinking Detective Actuators: Detective details: Heat exchanger Outlet / Middle temperature...
  • Page 33 Indicate or Display: Troubleshooting 12 Outdoor unit : Hydraulic unit : OUTDOOR UNIT Error Method: Mode Error L1 L2 Green Red Outdoor Thermistor Error : Light OFF : Light ON n : n times blinking n : n times blinking Detective Actuators: Detective details: Outdoor temperature thermistor...
  • Page 34 Indicate or Display: Troubleshooting 13 Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Heatsink Thermistor Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Heatsink temperature thermistor...
  • Page 35 Indicate or Display: Troubleshooting 14 Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Electric expansion valve Thermistor Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Expansion valve temperature thermistor...
  • Page 36 Troubleshooting 15 Indicate or Display: Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Current sensor error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: When Input Current Sensor has detected 1A or less,...
  • Page 37 Troubleshooting 16-1 Indicate or Display: Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Pressure sensor error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: High pressure switch...
  • Page 38 Troubleshooting 16-2 Indicate or Display: Outdoor unit : Hydraulic unit : OUTDOOR UNIT Error Method: Mode Error L1 L2 Green Red Pressure sensor error : Light OFF : Light ON n : n times blinking n : n times blinking Detective Actuators: Detective details: 30 seconds or more after power-on, when pressure sensor detection...
  • Page 39 Troubleshooting 17 Indicate or Display: Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Trip detection n : n times blinking : Light OFF : Light ON n : n times blinking Detective details: Detective Actuators: "Protection stop by overcurrent generation after inverter compressor start Outdoor unit Inverter PCB...
  • Page 40 Troubleshooting 18 Indicate or Display: Hydraulic unit : OUTDOOR UNIT Error Method: Outdoor unit : Green Red Mode Error L1 L2 Compressor motor control error n : n times blinking : Light OFF : Light ON n : n times blinking Detective details: Detective Actuators: Outdoor unit Inverter PCB...
  • Page 41 Indicate or Display: Troubleshooting 19 Outdoor unit : Hydraulic unit : OUTDOOR UNIT Error Method: Mode Error L1 L2 Green Red Outdoor Unit Fan Motor Error : Light OFF : Light ON n : n times blinking n : n times blinking Detective Actuators: Detective details: When outdoor fan rotation speed is less than 100rpm in 20 seconds...
  • Page 42 Indicate or Display: Troubleshooting 20 Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Discharge Temperature Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: °C...
  • Page 43 Indicate or Display: Troubleshooting 21 Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Compressor Temperature Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: °C...
  • Page 44 Indicate or Display: Troubleshooting 22 Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Pressure Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective Actuators: Detective details: Pressure sensor "Protection stop by suction pressure...
  • Page 45 Troubleshooting 23 Indicate or Display: Hydraulic unit : Outdoor unit : OUTDOOR UNIT Error Method: Green Red Mode Error L1 L2 Heatsink Temperature Error n : n times blinking : Light OFF : Light ON n : n times blinking Detective details: Detective Actuators: Outdoor unit Inverter PCB...
  • Page 46 3 TROUBLESHOOTING WITH NO ERROR CODE Forecast of Cause: Troubleshooting 24 1.Power Supply failure 2. External cause Outdoor unit - No Power 3.Electrical Components defective Check Point 1 : Check Installation Condition Isn’t the breaker down? Check loose or removed connection cable. >>If abnormal condition is found, correct it by referring to Installation Manual or Data &...
  • Page 47 Troubleshooting 25 Forecast of Cause: 1. Setting/ Connection failure 2. External cause No Operation (Power is ON) 3. Electrical Component defective Check Point 1 : Check hydraulic unit and outdoor unit installation condition Are these hydraulic unit and outdoor unit suitable model numbers to connect? >>...
  • Page 48 Forecast of Cause: Troubleshooting 26 1. Hydraulic Unit error 2. Outdoor Unit error No Cooling / No Heating 3. Effect by Surrounding environment 4. Connection Pipe / Connection Wire failure 5. Refrigeration cycle failure Check Point 1 : Check Outdoor Unit Operation Check if Outdoor Unit is operating Check any objects that obstruct the air flow route.
  • Page 49 Forecast of Cause : Troubleshooting 27 1. Abnormal installation Abnormal Noise (Outdoor) 2. Fan failure 3. Compressor failure Diagnosis method when Abnormal Noise is occurred Is Main Unit installed in stable condition? Is Fan Guard installed normally? Is Fan broken or deformed? Is the screw of Fan loose? Is there any object which obstruct the Fan rotation? Check if vibration noise by loose bolt or contact noise...

  • Page 50: Service Parts Information

    4 SERVICE PARTS INFORMATION SERVICE PARTS INFORMATION 1 Compressor Diagnosis method of Compressor ( If Outdoor Unit LED displays Error, refer to Troubleshooting ) Abnormal noise Stops soon after starting up Does not start up Is there open or loose connection Check if vibration noise by Is there open or loose connection cable?
  • Page 51 SERVICE PARTS INFORMATION 2 Inverter Compressor Check Point 1 : Check Connection Check terminal connection of Compressor (loose or incorrect wiring) Terminal cover opened Inverter PCB W(C) U(R) (BLACK) (RED) W400 W401 W402 V(S) (WHITE) BLACK WHITE Compressor Check Point 2 : Check Winding Resistance Check winding resistance of each terminal If the resistance value is 0 or infinite, replace Compressor.

  • Page 52: Resistance Value

    SERVICE PARTS INFORMATION 3 Outdoor unit Electronic Expansion Valve ( EEV ) Check Point 1 : Check Connections Check connection of connector ( Loose connector or open cable ) EXPANSION VALVE COIL BLUE ORANGE YELLOW WHITE Check Point 2 : Check Coil of EEV Check Point 3 : Check Noise at start up Remove connector, check each winding Turn on Power and check operation noise.
  • Page 53 SERVICE PARTS INFORMATION 4 Outdoor unit fan motor Check Point 1 : Check rotation of Fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) >>If Fan or Bearing is abnormal, replace it. Check Point 2 : Check resistance of Outdoor Fan Motor Refer to below.
  • Page 54 SERVICE PARTS INFORMATION 5 Thermistor Check Point : Check Thermistor resistance value Remove connector and check Thermistor resistance value. Resistance Value [ k ] Temperature [°C] Thermistor A Thermistor B Thermistor C Thermistor D 1013.1 95.6 224.3 94.3 531.6 50.3 115.2 49.6 292.9...
  • Page 55 INNOVATIVE SOLUTION OF DOMESTIC HEATING 4. FIELD WORKING 2021.03.01 SA_CH04_CF003EF_01...
  • Page 56 1. Disassembly Process of Outdoor Unit WOYA100KLT and WOHA100KLT WO*A060LFCA and WO*A080LFCA 7.1.1 Appearance 7.1.2 SERVICE PANEL removal screw hole x 3 slide ⇩ Remove the mounting screws Remove the service panel by sliding downward 04-01...

  • Page 57: Top Panel Removal

    7.1.3 TOP PANEL removal screw x 4 screw screw x 4 Remove the mounting screws and the top panel 7.1.4 MAIN PCB removal locking spacer x 4 Remove the connectors and the wires Remove the main PCB 04-02...
  • Page 58 7.1.5 INVERTER PCB removal fan motor connector pressure switch connector screw screw binder Remove the mounting screws Remove the binder ( don’t cut ) Remove the fan motor connector and the pressure switch connector hook Change the direction of holder (step 1) Change the direction of holder (step 2) hook on the ◁ marked hook ⇩...
  • Page 59 connector connector ( black) Remove the connector 4 places remove the wire from the filter locking spacer screw scr ew Remove the connectors and the wires Remove the inverter PCB 04-04...
  • Page 60 7.1.6 FRONT PANEL removal screw Remove the front pipe cover screw Remove the mounting screws hook Remove the front panel 04-05...

  • Page 61: Fan Motor Removal

    7.1.7 FAN MOTOR removal Remove the fan nut and the propeller fan hole clamp clip ⇩ Remove the fan motor lead wire Loose the clamp Remove the fan motor lead wire screw binder Remove the mounting screws Cut the binders 04-06...
  • Page 62 7.1.8 RIGHT PANEL removal screw screw screw Remove the mounting screws Remove the mounting screws Remove the rear pipe cover Remove the right panel by sliding upward 7.1.9 THERMISTOR removal thermistor (heat exchanger) claw thermistor (outdoor temp.) thermistor assy Remove the thermistor (outdoor temp.) Remove the thermistor E.E.V.
  • Page 63 7.1.10 SOLENOID COIL ( 4-WAY VALVE ) remove screw Remove the mounting screw Remove the solenoid coil 7.1.11 E.E.V. COIL remove Remove the E.E.V. coil by hand 7.1.12 PRESSURE SWITCH remove Remove the connectors 04-08...
  • Page 64 7.1.13 PCB HOLDER removal screw screw screw screw screw cover screw screw screw screw screw screw screw screw screw screw screw screw Remove the mounting screws Remove the covers Remove the binder at the PCB holder Lift up the PCB holder (Don’t cut) 04-09...

  • Page 65: Compressor Removal

    7.1.14 COMPRESSOR removal Precautions for exchange of compressor. Do not allow moisture or debris to get inside refrigerant pipes during work. Procedure for compressor removal. 1.Turn off the power. 2.Remove the TOP PANEL, FRONT PANEL and RIGHT PANEL ASSY. 3.Collect the refrigerant from the 3-way valve (gas) and 3-way valve (liquid). 4.Start the following work after completely collecting the refrigerant.
  • Page 66 binder Cut the binder 2 places Remove the thermistor (discharge) Remove the insulation Remove the thermistor (comp. temp.) Remove the terminal cover Remove the connectors [R(U):red, T(W):black, S(V):white] 04-11...
  • Page 67 range range Cut the discharge pipe in this range Cut the suction pipe in this range Caution Keep their shape better. There is a possibility of catching fire to oil when removing by the welding without cutting it. Remove the special nut 3 places Remove the compressor Procedure for compressor installation Reverse procedure to removing the compressor...
  • Page 68 Allowble Part name Precautions in work temperature 4-WAY VALVE Remove the coil before brazing. And install the coil after brazing. EXPANSION VALVE Remove the coil before brazing. And install the coil after brazing. CHECK JOINT PRESSURE SWITCH Tighten the flare part gripping it. (Tightening torque:12 1.5N m) Do the static electricity measures.

This manual is also suitable for:

Comfort woya100kltComfort wsya100ml3

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