Classic Air Conditioners GWFRC09S Service Manual
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Classic Air Conditioners GWFRC09S Service Manual

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Summary of Contents for Classic Air Conditioners GWFRC09S

  • Page 1 Service Manual...

  • Page 2: Table Of Contents

    Table of Contents Service Manual Part Ⅰ : Technical Information ........1 1. Summary ................. 1 2. Specifications ............... 2 2.1 Specification Sheet ................... 2 2.2 Capacity Variation Ratio According to Temperature ......12 2.3 Cooling and Heating Data Sheet in Rated Frequency ......13 3.
  • Page 3 Table of Contents Service Manual 8.7 Vacuum Pumping and Leak Detection ..........49 8.8 Check after Installation and Test Operation ......... 49 9. Maintenance ..............50 9.1 Error Code List ..................50 9.2 Procedure of Troubleshooting ............... 55 9.3 Troubleshooting for Normal Malfunction ..........67 10.

  • Page 4: Part Ⅰ : Technical Information

    Model Product code Indoor model Indoor product code Outdoor model Outdoor product code Controller GWFRC09S,GRFRC09AS CB464009000_X29326 GWFRC09S CB464N09000_X29326 GRFRC09AS CB444W15500_X29326 GWFRC12SA,GRFRC12ASA CB464008900_X29326 GWFRC12SA CB464N08900_X29326 GRFRC12ASA CB444W15100_X29326 GWFRC12S,GRFRC12AS CB464008401_X29326 GWFRC12S CB464N08401_X29326 GRFRC12AS CB444W15000_X29326 YAP1F GWFRC18S,GRFRC18AS CB464008301_X29326 GWFRC18S CB464N08301_X29326 GRFRC18AS CB444W15700_X29326 GWFRC24S,GRFRC24AS...

  • Page 5: Specifications

    2. Specifications Service Manual 2.1 Specification Sheet Model GWFRC09S,GRFRC09AS Product Code CB464009000_X29326 Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 9000 Heating Capacity Btu/h Cooling Power Input Heating Power Input Cooling Power Current 3.73...
  • Page 6 Service Manual Outdoor Unit Model GRFRC09AS Outdoor Unit Product Code CB444W15500_X29326 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD. Compressor Model QXF-A082zC170 Compressor Oil ZE-GLES RB68GX or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input 756.6 Compressor Overload Protector Throttling Method Capillary Set Temperature Range...
  • Page 7 Service Manual Model GWFRC12SA,GRFRC12ASA Product Code CB464008900_X29326 Rated Voltage Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 11700 Heating Capacity Btu/h Cooling Power Input 1345 Heating Power Input Cooling Power Current 14.6 Heating Power Current Rated Input 1500 Rated Cooling Current 16.3...
  • Page 8 Service Manual Outdoor Unit Model GRFRC12ASA Outdoor Unit Product Code CB444W15100_X29326 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model FTz-AN108ACBD Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA Compressor Power Input Compressor Overload Protector Throttling Method Capillary Set Temperature Range ºF...
  • Page 9 Service Manual Model GWFRC12S,GRFRC12AS Product Code CB464008401_X29326 Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 11700 Heating Capacity Btu/h Cooling Power Input 1345 Heating Power Input Cooling Power Current Heating Power Current Rated Input 1500 Rated Cooling Current Rated Heating Current...
  • Page 10 Service Manual Outdoor Unit Model GRFRC12AS Outdoor Unit Product Code CB444W15000_X29326 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model FTz-AN108ACBD Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. Compressor RLA 6.80 Compressor Power Input Compressor Overload Protector Throttling Method Capillary Set Temperature Range ºF...
  • Page 11 Service Manual Model GWFRC18S,GRFRC18AS Product Code CB464008301_X29326 Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 17100 Heating Capacity Btu/h Cooling Power Input 1829 Heating Power Input Cooling Power Current 7.85 Heating Power Current Rated Input 2300 Rated Cooling Current...
  • Page 12 Service Manual Outdoor Unit Model GRFRC18AS Outdoor Unit Product Code CB444W15700_X29326 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model QXF-A108zH170C Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. 17.0 Compressor RLA Compressor Power Input 1000 Compressor Overload Protector Throttling Method Capillary Set Temperature Range...
  • Page 13 Service Manual Model GWFRC24S,GRFRC24AS Product Code CB464008102_X29326 Rated Voltage 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Cooling Capacity Btu/h 22000 Heating Capacity Btu/h Cooling Power Input 1896 Heating Power Input Cooling Power Current Heating Power Current Rated Input 2500 Rated Cooling Current Rated Heating Current...
  • Page 14 Service Manual Outdoor Unit Model GRFRC24AS Outdoor Unit Product Code CB444W15800_X29326 Compressor Manufacturer ZHUHAI LANDA COMPRESSOR CO. LTD. Compressor Model FTz-SM151AXBD Compressor Oil FW68DA or equivalent Compressor Type Rotary Compressor LRA. 35.00 Compressor RLA 10.58 Compressor Power Input 1330 Compressor Overload Protector HPC 115/95U1 KSD115ºC Throttling Method Capillary...

  • Page 15: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature GWFRC09S,GRFRC09AS GWFRC12SA,GRFRC12ASA GWFRC12S,GRFRC12AS Cooling operation ambient temperature range is 0 F~118 Cooling operation ambient temperature range is 0 F~118 Cooling Heating Cooling Conditions Conditions Indoor: DB70°F Conditions Indoor:DB80°F/WB66.9°F Outdoor: DB19.94°F/WB19.04°F Indoor:DB80°F/WB66.9°F Outdoor:DB95°F...

  • Page 16: Cooling And Heating Data Sheet In Rated Frequency

    Service Manual 2.3 Cooling and Heating Data Sheet in Rated Frequency Cooling: Pressure of gas pipe Rated cooling condition(°F) Inlet and outlet pipe temperature of connecting indoor and (DB/WB) heat exchanger Fan speed of Fan speed of outdoor unit Model indoor unit outdoor unit Indoor...

  • Page 17: Outline Dimension Diagram

    (5 1/8) (3 17/64) (5 29/32) (3 35/64) (7 31/64) (5 33/64) (6 1/16) (3 7/64) Unit:mm(inch) Unit:inch Model GWFRC09S 31 7/64 10 53/64 7 7/8 6 41/64 18 3/16 6 9/32 GWFRC12SA 33 17/64 11 3/8 8 15/64 4 27/32...

  • Page 18: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GRFRC09AS GRFRC12ASA GRFRC12AS 11 7/32 26 37/64 12 63/64 28 13/16 17 29/32 Unit:inch GRFRC18AS 11 52/64 29 21/64 13 25/32 31 37/64 Unit:inch 20 5/32 Technical Information...
  • Page 19 Service Manual GRFRC24AS 13 25/64 15 53/64 37 23/32 Unit:inch 22 7/16 Technical Information...

  • Page 20: Refrigerant System Diagram

    4. Refrigerant System Diagram Service Manual Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger (evaporator) Suction Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Capillary Strainer COOLING Connection pipe specification: Liquid pipe:1/4" Gas pipe:3/8"(09K/12K) Indoor unit Outdoor unit Gas pipe:1/2"(18K)

  • Page 21: Electrical Part

    Grounding wire YEGN Yellow/Green Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ● Indoor Unit GWFRC09S GWFRC12SA GWFRC12S OPTIONAL OPTIONAL WIRED CONTROLLER CONTACT RECEIVER AND DISPLAY BOARD...
  • Page 22 Service Manual GWFRC24S WARNING OPTIONAL Please don't touch any electronic component or FAN MOTOR WIRED RECEIVER AND CONTROLLER terminal when the machine DISPLAY BOARD is running,stopping or has been powered off for less θ θ than 3 minutes to prevent electric shock ! TERMINAL BLOCK...
  • Page 23 Service Manual ● Outdoor Unit GRFRC09AS GRFRC12AS OPTIONAL OPTIONAL OPTIONAL WARNING Bottom 4-WAY ELECTRONIC OUTTUBE OUTROOM EXHAUST Please don't touch any Band EXPANSION VALVE TEMP. TEMP. TEMP. VALVE terminal when the machine Heater SENSOR SENSOR SENSOR is running ,stopping or has T(YE) been powered off for less VT(YE)
  • Page 24 Service Manual GRFRC18AS WARNING OPTIONAL OPTIONAL Please don't touch any BOTTOM OUTTUBE OUTROOM EXHAUST ELECTRONIC terminal when the machine is BAND EXPANSION TEMP. TEMP. TEMP. running ,stopping or has been HEATER VALVE SENSOR SENSOR SENSOR powered off for less than 30 minutes to prevent the risk of electric shock ! WH(BU)

  • Page 25: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit GWFRC09S GWFRC12SA GWFRC12S GWFRC18S Name Name Interface of health function UVC terminal neutral wire Neutral wire terminal WIFI terminal Motor terminal Wired controller terminal Interface of health function live Interface of display board...
  • Page 26 Service Manual GWFRC24S Name Name Neutral wire Display interface Interface of health function live wire 10 WIFI interface DC fan interface Grounding wire Terminal with outdoor unit Up&down swing interface communication wire Left&right swing interface 13 Live wire interface Interface of wired controller 14 Interface of health function neutral wire Interface of gate control 15 Interface of ultraviolet clean...
  • Page 27 Service Manual Outdoor Unit GRFRC09AS GRFRC12AS Name Name Earthing wire Outdoor fan Live wire Electronic expansion valve Neutral wire Compressor Overload Communication wire 10 Temperature sensor 4-way valve E disk Electric heating of chasssis 12 Three-phase terminal of compressor Technical Information...
  • Page 28 Service Manual GRFRC12ASA Name Name Three-phase terminal of compressor Terminal of communication wire Temperature sensor Neutral wire Electronic expansion valve Live wire Outdoor fan 10 Earthing wire 4-way valve Interface of reactor Electric heating of chasssis 12 Compressor Overload Technical Information...
  • Page 29 Service Manual GRFRC18AS 9 10 Name Name Earthing wire Outdoor fan Live wire DRED(Reserved) Neutral wire 10 Electronic expansion valve Communication wire Compressor Overload 4-way valve 12 Temperature sensor Electric heating of chasssis 13 Compressor DRED-DC(Reserved) Technical Information...
  • Page 30 Service Manual GRFRC24AS Name Name Electronic expansion valve Communication wire E disk 4-way valve Program debug interface 10 Electric heating of chasssis Interface monitoring AC fan Earthing wire 12 Temperature sensor Live wire 13 Overload of compressor Neutral wire 14 Compressor terminal Technical Information...

  • Page 31: Function And Control

    6. Function and Control Service Manual 6.1 Remote Controller Introduction Buttom name and function intruduction ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT X-FAN SLEEP Preparation before operation sequence: When using the remote controller for the first time or after replacing the batteries, please set the time of the system according to current time in the following steps: Notes:...
  • Page 32 Service Manual status. If you want to turn off the light, please press LIGHT button. (2). Switching temperature scale Press this button again to turn on the light. In unit off status, press MODE button and button simultaneously (7). Viewing ambient temperature to switch temperature scale between C and In unit on status, receiver light board or wired controller is...

  • Page 33: Ewpe Smart App Operation Manual

    Service Manual 6.2 Ewpe Smart App Operation Manual Control Flow Chart Internet Cloud Intelligent Home Wi-Fi Cellular/ home Other Wi-FI appliances Home wireless router Home Wi-Fi Operating Systems Requirement for User's smart phone: iOS system Android system Support iOS7.0 and Support Android 4.4 and above version above version...

  • Page 34: Brief Description Of Modes And Functions

    Service Manual 6.3 Brief Description of Modes and Functions Indoor Unit (2) Auto button ● 1. Basic function of system If press this auto button when turning off the unit, the complete unit will operate at auto mode. Indoor fan operates at auto fan (1) Cooling mode speed and swing function is turned on.
  • Page 35 Service Manual Within 5min after energizing (unit ON or OFF status is ok), (14) X-fan mode continuously press LIGHT button for 3 times within 3s to enter When X-fan function is turned on, after turn off the unit, indoor refrigerant recycling mode; Fo is displayed and refrigerant fan will still operate at low speed for 2min and then the complete recycling function is started.
  • Page 36 Service Manual Outdoor Unit ⑤ When Toutdoor ambient temperature ＞ 30 ℃ , compressor ● stops operation immediately. Outdoor fan will stop 30s later. ⑥ Under the condition that compressor is turned on, when unit 09/12K is changed to heating mode from cooling or drying mode, 4-way 1.
  • Page 37 Service Manual 18/24K that is, the minimum setting temperature for outer units judgment is 77ºF . 1. Input Parameter Compensation and Calibration (2) Dehumidifying Mode (1) Check the ambient temperature compensation 1. Conditions and processes of dehumidifying operations: Same function Indoor ambient temperature compensation as the cooling mode;...
  • Page 38 Service Manual the machine can be restarted after remote shutdown and powering begin after 6 min of starting the compressor. up again without delay). 1. Starting estimation: 1. Cooling mode After the compressor stopped working for 180s, if T > inner pipe Start the machine to enter into cooling operation for cooling, the (the temperature of hysteresis...
  • Page 39 Service Manual ] , you should adjust the compressor reducing temperature at normal speed ≤T outer pipe, then Cooling overload power turn-off temperature frequency by reducing 8Hz/90s till the lower limit; After it was overload protects machine stopping; 4. Power turn-off: running 90s at the lower limit, if [T Cooling overload frequency reducing ]≤T...
  • Page 40 Service Manual automatically, and you should press the ON/OFF button to supply air, the trouble should be cleared immediately, and the resume. During the process of running, if the running time of protection times are not counted. 2. Frequency limited compressor exceeds the t Protection times clearing of discharge , the discharge protection is cleared to recount.
  • Page 41 Service Manual ], and the compressor have stopped working if it still cant run when the reversion abnormity protection for four- Frequency Reducing Phase Current for 3 min, the machine shall be allowed to operate; way valve happens to stop working for 3 times in succession, it is 4.
  • Page 42 Service Manual (2) When Toutdoor amb.>35.6ºF , the electric heating of chassis will stop operation; (3)When 32ºF <Toutdoor amb.≤35.6ºF, the electric heating of chassis will keep original status. 7. Electric Heating Function of Compressor (1) When Toutdoor amb.≤≤23ºF , compressor stops operation, while the electric heating of compressor starts operation;...

  • Page 43: Part Ⅱ : Installation And Maintenance

    7. Notes for Installation and Maintenance Service Manual Safety Precautions: Important! wire by yourself. 11. For the air conditioner without plug, an air switch must Please read the safety precautions carefully before installa- be installed in the circuit. The air switch should be all-pole tion and maintenance.
  • Page 44 Service Manual Safety Precautions for Installing and Relocating the Unit: To ensure safety, please be mindful of the following precautions. WARNINGS 1. When installing or relocating the unit, be sure to keep the If compressor starts running when stop valve is open and refrigerant circuit free from air or substances other than the connection pipe is not yet connected, air will be sucked in and specified refrigerant.
  • Page 45 Service Manual Main Tools for Installation and Maintenance Level meter Measuring tape Screw driver Impact drill Drill head Electric drill Electroprobe Universal meter Inner hexagon Electronic Torque wrench Open-end wrench spanner leakage detector Vacuum pump Pressure meter Pipe pliers Pipe pliers Pipe cutter Pipe expander Pipe bender...

  • Page 46: Installation

    8. Installation Service Manual 8.1 Installation Dimension Diagram Space to the wall At least 15cm Space to the wall At least 15cm Space to the obstruction At least 50cm Drainage pipe Installation and Maintenance...
  • Page 47 Service Manual Installation Procedures Start installation Preparation before installation Read the requirements select installation Prepare tools for electric connection location Select indoor unit Select outdoor unit installation location installation location Install wall-mounting Install the support of outdoor unit (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...

  • Page 48: Installation Parts-Checking

    Service Manual 8.2 Installation Parts-checking Name outdoor unit won't be exposed directly to sunlight or strong wind. (3) The location should be able to withstand the weight of outdoor Indoor unit unit. Outdoor unit (4) Make sure that the installation follows the requirement of Connection pipe installation dimension diagram.
  • Page 49 Service Manual (3) Fix the wall-mounting frame on the wall with tapping screws wrench. (As show in Fig.6) and then check if the frame is firmly installed by pulling the frame. (4) Wrap the indoor pipe and joint of connection pipe with If the plastic expansion particle is loose, please drill another fixing insulating pipe, and then wrap it with tape.

  • Page 50: Installation Of Outdoor Unit

    Service Manual 7. Connect Wire of Indoor Unit Indoor and (1) Open the panel, remove the screw on the wiring cover and outdoor power cord Indoor unit then take down the cover. (As show in Fig.11) pipe Screw Panel Liquid pipe Band Drain hose...
  • Page 51 Service Manual (4) For the unit with cooling capacity of 2300W~5000W, 6 expansion screws are needed; for the unit with cooling capacity of 6000W~8000W, 8 expansion screws are needed; for the Fig.23 unit with cooling capacity of 10000W~16000W, 10 expansion screws are needed.

  • Page 52: Vacuum Pumping And Leak Detection

    Service Manual 2. Leakage Detection (1) With leakage detector: The drain hose can't raise upwards. Check if there is leakage with leakage detector. (2) With soap water: Wall If leakage detector is not available, please use soap water for leakage detection. Apply soap water at the suspected position and keep the soap water for more than 3min.

  • Page 53: Maintenance

    9. Maintenance Service Manual 9.1 Error Code List Error Malfunction name AC status Possible causes code Malfunction of jumper cap The complete unit stops operation 1. Jumper cap is not installed in control panel; 2. Poor contact of jumper cap; 3.
  • Page 54 Service Manual Error Malfunction name AC status Possible causes code Liquid valve temperature 1. Temperature sensor is not well connected or damaged; sensor is ON / short- 2. The wire of temperature sensor is damaged, causing short circuited circuit to copper pipe or outer casing; 3.
  • Page 55 Service Manual Error Malfunction name AC status Possible causes code Outdoor condenser Cool/Dry: compressor and outdoor 1. Temperature sensor is not connected well or damaged; temperature sensor is fan stop operation, while indoor fan 2. Temperature sensor wire of outdoor unit is damaged; short open/short-circuited operates;...
  • Page 56 Service Manual Error Malfunction name AC status Possible causes code Undefined outdoor unit Cool: compressor and outdoor 1. Outdoor ambient temperature exceeds the operation range error fan stops operation, while indoor of unit (eg: less than-20 C or more than 60 C for cooling;...
  • Page 57 Service Manual Error Malfunction name AC status Possible causes code DC bus voltage drop Cool/Dry: compressor stops The power voltage is unstable. malfunction operation, while indoor fan operates; Heat: all loads stops operation. Current detection Cool: compressor and outdoor 1. Is the complete unit lacking of refrigerant? malfunction of unit fan stops operation, while indoor 2.

  • Page 58: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Troubleshooting for jumper cap Main check points: (1) jumper cap (2) control board of indoor unit Display shows “C5” Check whether the main Insert the equipped board of controller is inserted with jumper cap jumper cap.
  • Page 59 Service Manual 2. Communication malfunction Main check points: (1) Connection wire between indoor unit and outdoor unit (2) Wiring inside the unit (3) Communication circuit of control board of indoor unit (4) Communication circuit of control board of outdoor unit Start Check whether the unit has operated normally before...
  • Page 60 Service Manual 3. IPM protection , over-phase current of compressor Main check points: (1) compressor COMP terminal (2) power supply voltage (3) compressor (4) charging amount of refrigerant (5) air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit...
  • Page 61 Service Manual 4. Overload protection of compressor , high discharge temperature, protection of compressor Main check points: (1) electronic expansion valve (2) expansion valve terminal (3) charging amount of refrigerant (4) overload protector NOTE:The control board as below means the control board of outdoor unit. After the unit has been cut off the power for more than 20mins...
  • Page 62 Service Manual 5.Troubleshooting for temperature sensor , , , , Main check points: (1) connection terminal (2) temperature sensor (3) main board Start Check whether the connection terminal between the temperature sensor and the control board is loose or not connected well.
  • Page 63 Service Manual 6.High temperature prevention protection ; high power ; system is abnormal Main check points: (1) outdoor temperature (2) fan (3)air inlet and air outlet of indoor/outdoor unit NOTE:The control board as below means the control board of outdoor unit. Overload protection, high temperature prevention protection...
  • Page 64 Service Manual 7.Desynchronization diagnosis for compressor Main check point: (1) system pressure (2) power supply voltage NOTE:The control board as below means the control board of outdoor unit. Desynchronization occurs Desynchronization occurs during operation after turning on the unit Check whether the fan Replace the fan Does the outdoor fan operate terminal OFAN is...
  • Page 65 Service Manual 8.Malfunction diagnosis for failure startup Main check points: (1) compressor wire (2) compressor (3) charging amount of refrigerant NOTE:The control board as below means the control board of outdoor unit. Put through the power and turn on the unit The time for stop operation is not enough and the system's high pressure and low pressure is Check whether the compressor...
  • Page 66 Service Manual 9. Charging malfunction of capacitor Main check points: (1) wiring board XT (2) reactor NOTE:The control board as below means the control board of outdoor unit. Put through the power to turn on the unit and then wait for 1min Measure the voltage at both ends of electrolytic capacitor with DC voltmeter.
  • Page 67 Service Manual 10. Troubleshooting-motor(indoor fan) doesn't operate Main check points: (1) connection terminal (2) motor (3) control board AP1 of indoor unit (4) blade 10.1 DC motor Display shows "H6" Pull the blade with hand under de-energization status Check whether the Adjust the motor and the blade blade operates smoothly to make the motor operate...
  • Page 68 Service Manual 10.2 PG motor Display shows "H6" Pull the blade with hand under de- energization status Adjust the motor and Check whether the blade to make the the blade operates blade operate smoothly smoothly. Eliminate malfunction Check whether Insert the feedback the feedback terminal of terminal again indoor fan's motor...
  • Page 69 Service Manual 11. AC overcurrent protection Start The normal fluctuation is about 10% of rated Eliminate malfunction The power voltage is unstable. voltage on the nameplate. The power voltage is too low and the Adjust the power voltage to make it normal. Eliminate malfunction load is too high.

  • Page 70: Troubleshooting For Normal Malfunction

    Service Manual 9.3 Troubleshooting for Normal Malfunction 1. Air Conditioner can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether it's due to power failure. If yes, No power supply, or poor connection After energization, operation indicator isn't bright wait for power recovery.
  • Page 71 Service Manual 4. ODU Fan Motor can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Wrong wire connection, or poor Check the wiring status according to circuit Connect wires according to wiring diagram to make connection diagram sure all wiring terminals are connected firmly Measure the capacity of fan capacitor with an Capacity of the ODU fan motor is universal meter and find that the capacity is out of...

  • Page 72: Exploded View And Parts List

    10. Exploded View and Parts List Service Manual 10.1 Indoor Unit GWFRC09S ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT X-FAN SLEEP The component picture is only for reference; please refer to the actual product. Description Description Front Panel...
  • Page 73 Service Manual GWFRC12SA GWFRC12S ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT X-FAN SLEEP The component picture is only for reference; please refer to the actual product. Description Description Description Evaporator Assy Main Board Front Panel Filter Sub-Assy Wall Mounting Frame Screw Cover Display Board Cross Flow Fan...
  • Page 74 Service Manual GWFRC18S ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT X-FAN SLEEP The component picture is only for reference; please refer to the actual product. Description Description Description Front Panel O-Gasket sub-assy of Bearing Electric Box Assy Filter Sub-Assy O-Gasket of Cross Fan Bearing Electric Box Decoration board(left and right)
  • Page 75 Service Manual GWFRC24S ON/OFF MODE I FEEL T-ON T-OFF TEMP CLOCK LIGHT X-FAN SLEEP The component picture is only for reference; please refer to the actual product. Description Description Description Front Panel Evaporator Support Electric Box Cover2 Filter Sub-Assy Evaporator Assy Main Board Screw Cover Wall Mounting Frame...

  • Page 76: Outdoor Unit

    Service Manual 10.2 Outdoor Unit GRFRC09AS GRFRC12ASA GRFRC12AS The component picture is only for reference; please refer to the actual product. Description Description Description Coping Discharge Tube Electric Box Assy Rear Grill Compressor and Fittings Electric Box Condenser Assy Chassis Sub-Assy Main Board Capillary Sub-Assy Clapboard...
  • Page 77 Service Manual GRFRC18AS The component is only for rererence;please refer to the actual product Description Description Front Grill Right Side Plate Cabinet Inhalation Tube Sub-assy Axial Flow Fan Condenser Assy Brushless DC Motor Rear Grill Chassis Sub-assy Coping Clapboard Motor Support Compressor and Fittings Left Side Plate Valve Support Block...
  • Page 78 Service Manual GRFRC24AS 8 9 10 The component is only for rererence;please refer to the actual product Description Description Front Grill 15 Discharge Tube-Assy Front Panel 16 Condenser Assy Axial Flow Fan 17 Clapboard Chassis Sub-assy 18 Motor Support Compressor and Fittings 19 Motor Capillary Sub-assy 20 Top Cover Assy...

  • Page 79: Removal Procedure

    11. Removal Procedure Service Manual 11.1 Removal Procedure of Indoor Unit Caution: discharge the refrigerant completely before removal. Step Procedure 1.Remove filter assembly Front panel Open the front panel. Push the left filter and right filter Front until they are separate from the groove on the front case panel.
  • Page 80 Service Manual Step Procedure 4. Remove detecting plate(wifi) and electric box cover2 Electric box cover 2 Remove the screws fixing detecting plate and remove detecting plate(wifi). Remove the screws fixing electric box cover 2 and remove electric box cover 2. Detecting plate(WIFI) Screw 5.
  • Page 81 Service Manual Step Procedure 7. Remove electric box assy Screw Clasps Loosen the connection clasps between shield cover of electric box sub-assy and electric box, and then remove the shield cover of electric box sub-assy. Remove the screw fixing electric box assy . Electric box Shield cover of electric box sub-assy...
  • Page 82 Service Manual Step Procedure 8.Remove evaporator assy Screw Evaporator assy Remove 3 screws fixing evaporator assy. C o n n e c t i o n Screw pipe clamp At the back of the unit, remove the screw fixing connection pipe clamp and then remove the connection pipe clamp.
  • Page 83 Service Manual Step Procedure 9. Remove motor and cross flow blade Screws Remove the screws fixing motor clamp and then remove the motor clamp. Motor clamp Cross flow Screw Motor Holder Remove the screws at the connection place of cross sub-assy flow blade and motor;...

  • Page 84: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Caution: discharge the refrigerant completely before removal. GRFRC09AS GRFRC12ASA GRFRC12AS NOTE:Take heat pump for example. Step Procedure 1. Before disassembly 2. Remove Cover of Pass Wire and valve cover Cover of Pass Wire Remove the screws fixing Cover of Pass Wire, valve cover and then remove them.
  • Page 85 Service Manual Step Procedure 4. Remove front panel assy and Rear Grill Remove connection screws connecting the front panel assy and Rear Grill, and then remove the front panel Rear Grill assy and Rear Grill. Front panel assy 5. Remove right side plate assy and left side plate Right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the...
  • Page 86 Service Manual Step Procedure 7. Remove motor support and motor Motor support Motor Remove the screws fixing the motor support and lift the motor support to remove it. Remove the screws fixing the motor and then remove the motor. 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 87 Service Manual Step Procedure 10. Remove gas valve and liquid valve Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid valve, remove them. Note: Liquid valve Discharge the refrigerant completely befor unsoldering;...
  • Page 88 Service Manual GRFRC18AS Caution: discharge the refrigerant NOTE:Take heat pump for example. completely before removal. Step Procedure 1. Before disassembly 2. Remove Cover of Pass Wire and valve cover Cover of Pass Wire Remove the screws fixing Cover of Pass Wire, valve cover and then remove them.
  • Page 89 Service Manual Step Procedure 4. Remove front panel assy and Rear Grill Remove connection screws connecting the front panel assy and Rear Grill, and then remove the front panel assy and Rear Grill. Rear Grill Front panel 5. Remove right side plate assy and left side plate Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the terminal board, rescrew the screws fixing the right side...
  • Page 90 Service Manual Step Procedure 7. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard are removed and the electrical box assy are removed. 8.
  • Page 91 Service Manual Step Procedure 10. Remove gas valve, liquid valve and valve suppprt Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the Liquid valve welding joint connecting the gas valve and the liquid Valve supprt valve, remove them.
  • Page 92 Service Manual Step Procedure Compressor 13. Remove compressor Remove the 3 foot nuts on the compressor and then remove the compressor. Installation and Maintenance...
  • Page 93 Service Manual GRFRC24AS Caution: discharge the refrigerant NOTE:Take heat pump for example. completely before removal. Step Procedure 1. Before disassembly 2. Remove Cover of Pass Wire and valve cover Cover of Pass Wire Remove the screws fixing Cover of Pass Wire, valve cover and then remove them.
  • Page 94 Service Manual Step Procedure 4. Remove front panel assy Remove connection screws connecting the front panel assy, and then remove the front panel assy. Front panel 5. Remove right side plate assy Rescrew the ground screws, remove the ground wires, loosen the screws fixing terminal board, remove the terminal board, rescrew the screws fixing the right side plate, and remove the right side plate assy.
  • Page 95 Service Manual Step Procedure 7. Remove motor and motor support Motor support Remove the screws fixing the motor and then remove the motor. Remove the screws fixing the motor support and lift the motor support to remove it. Motor 8. Remove electric box assy Electric box assy Remove the terminals, lift up and rotate the electrical box assy to the right so that the snaps on the clapboard...
  • Page 96 Service Manual Step Procedure 10. Remove gas valve, liquid valve and valve suppprt Remove the valve support bolck, remove the screws fixing the gas valve and the liquid valve,unsolder the welding joint connecting the gas valve and the liquid Liquid valve valve, remove them.

  • Page 97: Appendix

    Appendix: Service Manual Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius Fahrenheit display Fahrenheit Celsius temperature（℉） temperature（℉） temperature（℉） （℉） （℃） （℉） （℃）...

  • Page 98: Appendix 3: Pipe Expanding Method

    Service Manual Appendix 3: Pipe Expanding Method Pipe Note: Improper pipe expanding is the main cause of refrigerant leakage.Please expand Pipe cutter the pipe according to the following steps: A:Cut the pip Leaning Uneven Burr ● Confirm the pipe length according to the distance of indoor unit and outdoor unit. ●...

  • Page 99: Appendix 4: List Of Resistance For Temperature Sensor

    Service Manual Appendix 4: List of Resistance for Temperature Sensor Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) Temp( Resistance(kΩ) 138.10 49.02 18.75 7.97 128.60 44.31 17.14 7.35 115.00 40.09 15.68 6.79 102.90 36.32...
  • Page 100 JF00305472 For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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