Classic Air Conditioners GWHARC09SA Service Manual
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Classic Air Conditioners GWHARC09SA Service Manual

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raymond
February 24, 2025

indoor unit comes on and **** runs ,outdoor unit does not come on at all no **** or compressor

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1 comments:
Mr. Anderson
February 24, 2025

The outdoor unit of the Classic Air Conditioners GWHARC09SA may not turn on while the indoor unit operates due to the following reasons:

1. Circuit Malfunction – If there's a circuit issue in the outdoor unit, it may prevent it from turning on.
2. Control Panel Failure – If the outdoor unit's control panel (AP1) is faulty, the unit may stop operating.
3. Low Supply Voltage – If the supply voltage is lower than AC175V, the outdoor unit may not function.
4. Loose or Broken Wiring Terminal – If the wiring terminal (4V) is loose or broken, the outdoor unit may not receive the necessary signals to operate.
5. Damaged 4-Way Valve – If the 4-way valve (4V) is damaged, it may need to be replaced to restore function.

Checking and addressing these issues should help resolve the problem.

This answer is automatically generated

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Summary of Contents for Classic Air Conditioners GWHARC09SA

  • Page 1 Service Manual...

  • Page 2: Table Of Contents

    Service Manual Table of Contents Part Ⅰ : Technical Information ........1 1. Summary ....................1 2. Specifications ..................3 2.1 Specification Sheet ................... 3 2.2 Capacity Variation Ratio According to Temperature ......17 2.3 Cooling and Heating Data Sheet in Rated Frequency ......17 3.
  • Page 3 Service Manual 9. Maintenance ................... 59 9.1 Error Code List ..................59 9.2 Procedure of Troubleshooting ............... 65 9.3 Maintenance method for normal malfunction ........79 10. Exploded View and Parts List ............ 81 10.1 Indoor Unit ..................... 81 10.2 Outdoor Unit ..................89 11.

  • Page 4: Part Ⅰ : Technical Information

    Service Manual Part Ⅰ : Technical Information 1. Summary Indoor Unit: Other Outdoor Unit: GRHARC09ASA GRARC12ASA GRARC09AS GRHARC09AS GRHARC12ASA GRARC12AS GRHARC12AS GRARC18AS Technical Information...
  • Page 5 CLOCK LIGHT X-FAN SLEEP Model List: Product code Indoor model Indoor product code Outdoor model Outdoor product code Remote Controller CB464004100_X29326 GWHARC09SA CB464N04100_X29326 GRHARC09ASA CB425W08200_X29326 YAP1FF CB464005000_X29326 GWARC12SA CB464N05000_X29326 GRARC12ASA CB425W07800_X29326 YAP1F CB464005100_X29326 GWHARC12SA CB464N05100_X29326 GRHARC12ASA CB425W07900_X29326 YAP1FF CB464003200_X29326 GWARC09S...

  • Page 6: Specifications

    Air Flow Volume 318/288/241/171 Dehumidifying Volume Pint/h 1.69 (Btu/h)/W (Btu/h)/W 10.92 SEER SCOP(Average/Warmer/Colder) Application Area 14-22 Model GWHARC09SA Product Code CB464N04100_X29326 Cross-flow Fan Type Ф98×580 Fan Diameter Length(D×L) Cooling Speed r/min 1350/1200/1050/750 Heating Speed r/min 1350/1200/1050/850 Fan Motor Power Output Fan Motor RLA 0.24...
  • Page 7 Service Manual Model of Outdoor Unit GRHARC09ASA Product Code of Outdoor Unit CB425W08200_X29326 Compressor Manufacturer/Trademark ZHUHAI LANDA COMPRESSOR CO.,LTD Compressor Model QXA-A091zE190 Compressor Oil FVC68D or RB 68EP Compressor Type Rotary L.R.A. Compressor RLA 12.62 Compressor Power Input Overload Protector 1NT11L-6233 or KSD115 C or HPC115/95U1 Throttling Method...
  • Page 8 Service Manual Product Code CB464003200_X29326 CB464003800_X29326 Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 9000 9000 Heating Capacity Btu/h 10000 Cooling Power Input Heating Power Input Cooling Power Current 3.25 3.25 Heating Power Current 3.75 Rated Input...
  • Page 9 Service Manual Model of Outdoor Unit GRARC09AS GRHARC09AS Product Code of Outdoor Unit CB348W03300_X29326 CB348W03400_X29326 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model QXF-A079zE190A QXF-A079zE190A Compressor Oil FW68DA FW68DA Compressor Type Rotary Rotary L.R.A. Compressor RLA Compressor Power Input Overload Protector...
  • Page 10 Service Manual Product Code CB464005000_X29326 CB464005100_X29326 Rated Voltage Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 12000 12000 Heating Capacity Btu/h 13000 Cooling Power Input 1194 1194 Heating Power Input 1250 Cooling Power Current Heating Power Current 13.5 Rated Input 1300...
  • Page 11 Service Manual Model of Outdoor Unit GRARC12ASA GRHARC12ASA Product Code of Outdoor Unit CB425W07800_X29326 CB425W07900_X29326 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO.,LTD CO.,LTD Compressor Model QXA-A091zE190 QXA-A091zE190 Compressor Oil FVC68D or RB 68EP FVC68D or RB 68EP Compressor Type Rotary Rotary L.R.A.
  • Page 12 Service Manual Product Code CB464003100_X29326 CB464003600_X29326 Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 12000 12000 Heating Capacity Btu/h 13000 Cooling Power Input 1089 1089 Heating Power Input 1126 Cooling Power Current 4.73 4.73 Heating Power Current...
  • Page 13 Service Manual Model of Outdoor Unit GRARC12AS GRHARC12AS Product Code of Outdoor Unit CB348W03500_X29326 CB348W03600_X29326 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model QXF-A102zE190B QXF-A102zE190B Compressor Oil FW68DA FW68DA Compressor Type Rotary Rotary L.R.A. Compressor RLA Compressor Power Input 1023...
  • Page 14 Service Manual Product Code CB464003300_X29326 CB464005200_X29326 Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 17400 18000 Heating Capacity Btu/h 18000 Cooling Power Input 1730 1700 Heating Power Input 1625 Cooling Power Current Heating Power Current Rated Input 2000...
  • Page 15 Service Manual Model of Outdoor Unit GRARC18AS GRHARC18AS Product Code of Outdoor Unit CB348W04700_X29326 CB348W04600_X29326 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO. LTD. CO.,LTD Compressor Model QXF-A102zE190C QXA-B141zF030A Compressor Oil FW68DA or equivalent RB68EP Compressor Type Rotary Rotary L.R.A.
  • Page 16 Service Manual Product Code CB464003000_X29326 CB464003700_X29326 Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 22000 22000 Heating Capacity Btu/h 24000 Cooling Power Input 1870 1870 Heating Power Input 2020 Cooling Power Current Heating Power Current 8.78 Rated Input...
  • Page 17 Service Manual Model of Outdoor Unit GRARC24AS GRHARC24AS Product Code of Outdoor Unit CB348W03200_X29326 CB348W03100_X29326 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model QXFS-D25zX090H QXFS-D25zX090H Compressor Oil FW68DA FW68DA Compressor Type Rotary Rotary L.R.A. Compressor RLA Compressor Power Input 2420...
  • Page 18 Service Manual Product Code CB434019000_X29326 CB434017800_X29326 Rated Voltage 208/230 208/230 Power Rated Frequency Supply Phases Power Supply Mode Outdoor Outdoor Cooling Capacity Btu/h 33600 33600 Heating Capacity Btu/h 34600 Cooling Power Input 3650 3650 Heating Power Input 3620 Cooling Power Current 15.5 15.5 Heating Power Current...
  • Page 19 Service Manual Model of Outdoor Unit GRARC36AS2 GRHARC36AS2 Product Code of Outdoor Unit CB432W22900_X29326 CB432W23000_X29326 ZHUHAI LANDA COMPRESSOR ZHUHAI LANDA COMPRESSOR Compressor Manufacturer/Trademark CO., LTD CO., LTD Compressor Model QXFS-D25zX090H QXFS-D25zX090H Compressor Oil FW68DA or equivalent FW68DA or equivalent Compressor Type Rotary Rotary L.R.A.

  • Page 20: Capacity Variation Ratio According To Temperature

    Service Manual 2.2 Capacity Variation Ratio According to Temperature 115V~ Cooling Heating Conditions Conditions Indoor:DB70°F Indoor:DB80°F/WB67°F Indoor air flow:Super High Indoor air flow:Super High Pipe length:24.6ft Outdoor temp.(°C) Pipe length:24.6ft 5 17 23 32 41 50 57 67 75 86 95 104 115 -4 0 5 10 17 20 24 32 41 43 47 53 59 64 70 75 Outdoor Temp.(°F) Outdoor Temp.(°F)
  • Page 21 Service Manual Heating: Pressure of gas pipe Inlet and outlet pipe Rated heating Compressor connecting indoor and temperature of heat Fan speed of Fan speed of condition(°F) (DB/WB) Model revolution outdoor unit exchanger indoor unit outdoor unit (rps) Indoor Outdoor P (PSIG) T1 (°F) T2 (°F)

  • Page 22: Outline Dimension Diagram

    Φ2 3/4 Φ2 3/4 Φ2 3/16 1 1/2 1 11/16 3 1/8 7 1/2 5 1/2 Unit:inch MODEL GWHARC09SA 31 1/8 10 7/8 7 7/8 GWARC12SA GWHARC12SA GWARC09S 33 17/64 11 3/8 8 15/64 GWARC12S GWHARC09S GWHARC12S GWARC18S GWHARC18S 38 3/16...
  • Page 23 Service Manual GWARC36S2 GWHARC36S2 53 9/64 9 61/34 13 25/32 29 3/8 Φ2 3/4 Φ2 3/4 Unit:inch 11 19/32 3 1/2 Technical Information...

  • Page 24: Outdoor Unit

    Service Manual 3.2 Outdoor Unit GRARC09AS GRHARC09AS 10 3/64 28 1/32 12 19/32 30 25/32 20 5/64 Unit:inch GRHARC09ASA GRARC12ASA GRHARC12ASA 10 7/64 12 38/64 33 25/64 21 17/64 Unit:inch Technical Information...
  • Page 25 Service Manual GRHARC09ASA GRHARC12AS 33 25/64 12 19/32 21 17/64 Unit: inth GRARC18AS 11 29/32 32 7/32 14 7/8 35 25/64 21 21/32 Unit: inth Technical Information...
  • Page 26 Service Manual GRARC24AS GRHARC18AS GRHARC24AS 13 3/8 15 19/32 Unit: inch GRARC36AS2 GRHARC36AS2 36 2/9 14 37/64 16 13/16 39 1/2 Unit: inch Technical Information...

  • Page 27: Refrigerant System Diagram

    Service Manual 4. Refrigerant System Diagram Cooling: Outdoor unit Indoor unit Gas pipe side Valve Di s charge Heat exchanger Suction (evaporator) Accumlator Compressor Heat exchanger Liquid pipe (condenser) side Valve Electron Capillary Strainer expansion valve Heating: Outdoor unit Indoor unit Gas pipe side Valve...

  • Page 28: Electrical Part

    Black Violet Orange Note: Jumper cap is used to determine fan speed and the swing angle of horizontal lover for this model. ● Indoor Unit GWHARC09SA GWARC12SA GWHARC12SA GWARC09S GWARC12S GWARC24S GWHARC09S GWHARC12S GWHARC24S WIRED CONTROLLER RECEIVER AND DISPLAY BOARD...
  • Page 29 Service Manual GWARC18S GWHARC18S WARNING WIRED Please don't touch any electronic CONTROLLER component and terminal when the RECEIVER AND machine is running, stopping or has DISPLAY BOARD been powered off for less than 3 minutes to prevent electric shock ! CONNECTOR TERMINAL BLOCK...
  • Page 30 Service Manual ● Outdoor Unit GRHARC09ASA GRHARC12ASA OVERLOAD ELECTRONIC PROTECTOR COMP. WARNING EXPANSION Please don't touch any electronic VALVE component and terminal when the COMP YEGN 4-WAY RD RD machine is running , stopping or has VALVE been powered off for less than 30 minutes to prevent electric shock ! 4V AC-N2 OVERHEAT...
  • Page 31 Service Manual GRARC09AS GRARC12AS ELECTRONIC REACTOR WARNING OUTTUBE OUTROOM EXHAUST EXPANSION Please don't touch any terminal TEMP. TEMP. TEMP. VALVE when the machine is running, SENSOR SENSOR SENSOR stopping or has been powered off for less than 30 minutes to prevent the risk of electric shock! (20k) (15k)
  • Page 32 Service Manual GRHARC18AS GRHARC24AS OVERLOAD PROTECTOR WARNING Please don't touch any terminal COMP. when the machine is running, COMP stopping or has been powered off for less than 30 minutes to MAGNETIC prevent the risk of electric shock! RING BU YE θ...
  • Page 33 Service Manual GRHARC36AS2 OVERLOAD PROTECTOR WARNING Please don't touch any terminal COMP. when the machine is running, COMP stopping or has been powered off MAGNETIC for less than 30 minutes to RING prevent the risk of electric shock! BU YE θ...

  • Page 34: Pcb Printed Diagram

    Service Manual 5.2 PCB Printed Diagram Indoor Unit GWHARC09SA GWARC12SA GWHARC12SA Name Name Interface of communication wire for Interface of WIFI indoor unit and outdoor unit (only for the mode with this function) Interface of live wire 10 Terminal of temperature sensor...
  • Page 35 Service Manual GWARC09S GWARC12S GWARC24S GWHARC09S GWHARC12S GWHARC24S Name Name Interface of communication wire for 10 Interface of PG feedback indoor unit and outdoor unit Interface of live wire Left&right swing interface Interface of dry contact(only for the Fuse model with this function) Interface of health function neutral 13 Interface of wifi wire(Applicable for some models)
  • Page 36 Service Manual GWARC18S GWHARC18S Name Name Neutral wire Terminal for display board connection Interface of WIFI Needle stand for indoor fan (only for the mode with this function) Auto button 10 Interface of jumper cap Up & down swing motor Live wire interface Left&right swing motor 12 Fuse...
  • Page 37 Service Manual GRARC36AS2 GRHARC36AS2 Name Name Grounding wire Auto button DC motor needle stand 10 up&down swing interface Communication terminal for outdoor Left&right swing interface unit Interface of health function(only for the Interface of WIFI mode with this function) (only for the mode with this function) Interface of neutral wire 13 Interface of ambient temperature senser Fuse...
  • Page 38 Service Manual Outdoor Unit GRHARC09ASA GRARC12ASA GRHARC12ASA Name Name Compressor output port 12 Neutral wire terminal for electric heating Live wire terminal for chassis electric Master control chip heater Live wire terminal for compressor Overload temperature of compressor electric heater Temperature of temperature sensor 15 4-way valve wiring terminal EEPROM...
  • Page 39 Service Manual GRARC09AS GRARC12AS GRHARC09AS GRHARC12AS Name Name Interface of compressor wire Communication wire Reactor wiring terminal 2 Live wire Reactor wiring terminal 1 10 Terminal of electronic expansion valve Terminal of chassis electric heater Interface of temperature sensor 4-way valve terminal 12 Overload interface of compressor Grounding wire 13 Terminal of outdoor fan...
  • Page 40 Service Manual GRARC18AS GRARC24AS GRHARC18AS GRHARC24AS Name Name Compressor three phase input interface 2-way valve wiring terminal Terminal of high pressure protection 10 Terminal of compressor electric heating Terminal of compressor overload Terminal of chassis electric heating protection Temperature of temperature sensor 12 Communication wire Terminal of electronic expansion valve 13 Live wire...
  • Page 41 Service Manual GRARC36AS2 GRHARC36AS2 10 11 Name Name Compressor three phase input interface Terminal of chassis electric heating Suction temperature sensor 10 4-way valve wiring terminal Terminal of electronic expansion valve 2-way valve wiring terminal Temperature of temperature sensor 12 Terminal of compressor electric heating Terminal of compressor overload 13 Live wire protection...

  • Page 42: Function And Control

    Service Manual 6. Function and Control I feel Set fan speed 6.1 Remote Controller Introduction Turbo mode Send signal Notice: Auto mode 1.This is a general use remote controller. It could be used for the air conditioner with multifunction. For the functions which the model Cool mode doesn't have, if press the corresponding button on the remote controller, the unit will keep the original running status.
  • Page 43 Service Manual temperature. Press "FAN" button to adjust fan speed. Press " " will switch to off status directly; if press this button again within / " "button to adjust fan blowing angle. (Cooling only unit won't 2s, the change of swing status will also depend on the circulation receive heating mode signal.
  • Page 44 Service Manual Note: Pressing this button in COOL or DRY mode, the icon " " is ● U n d e r o n a n d o ff s t a t u s , y o u c a n s e t T- O F F o r T- O N displayed and the indoor fan will continue operation for a while in order to dry the indoor unit even though you have turned off the simultaneously.
  • Page 45 Service Manual ● When selecting displaying of indoor or outdoor ambient to switch temperature display between °C and °F. temperature, indoor temperature indicator displays corresponding Auto clean function temperature and automatically turn to display set temperature after Under unit off status, hold "MODE" and "FAN" buttons three or five seconds.

  • Page 46: Brief Description Of Modes And Functions

    Service Manual 6.2 Brief Description of Modes and Functions ● Indoor Unit I f s w i t c h t o a u t o m o d e f r o m o t h e r m o d e , w h e n Ta m b . ≥Tset+8 1.Basic function of system C), the system operates under cooling mode;...
  • Page 47 Service Manual setting temperature will increase 1 F), two hours, setting (8)I feel control mode temperature increased 2 F) , then the unit will run at this After controller received I feel control signal and ambient setting temperature, rising temperature limit 30 C(86 temperature sent by remote controller, controller will work In Heat mode: sleep status after run for one hour, the setting...
  • Page 48 Service Manual The time interval between two start-ups of compressor cant be temperature compensation less than 180+T s(0≤T≤15). T is the variable of controller. Thats b. In heating mode, the indoor ambient temperature participating – ⊿ T to say the minimum stop time of compressor is 180s~195s. Read- in computing control= (T indoor ambient temperature heating indoor ambient...
  • Page 49 Service Manual 1. Conditions and processes of heating operations: b. Defrosting ends: the compressor stops, then starts it after is the actual detection temperature of indoor 55-second delay. indoor ambient temperature (2) Outer Fans Control environment thermo-bulb, T heating indoor ambient temperature compensation the indoor ambient temperature compensation during heating Notes:Only the outer fans run for at least 80s in each air flow speed can the air flow be switched;...
  • Page 50 Service Manual operate. 3. Power turn-off ]≥[I (7) Module protection If [I ], the compressor phase current Phase Current Power Turn-Off Phase Current ]≤[I Testing the module protective signal immediately after started, shall stop working for overcurrent protection; if [I Phase Current once the module protective signal is measured, stop the machine ], and the compressor have stopped working...
  • Page 51 Service Manual dehumidifying mode conversed (the inverted mode don’t clear out the failure when it can’t recover to operate). (15) PFC Protection 1. After start up the PFC, it should detect the protection signal of PFC immediately; under the condition of PFC protection, it should turn off the PFC and compressor at one time;...

  • Page 52: Part Ⅱ : Installation And Maintenance

    Service Manual Part Ⅱ : Installation and Maintenance 7. Notes for Installation and Maintenance Safety Precautions: enough, please get the specialized power cord or connection wire from the manufacture or distributor. Prohibit prolong the Important! wire by yourself. 11. For the air conditioner without plug, an air switch must Please read the safety precautions carefully before be installed in the circuit.
  • Page 53 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 refrigerant circuit free from air or substances other than the specified refrigerant.
  • Page 54 Service Manual Main Tools for Installation and Maintenance 1. Level meter, measuring tape 2. Screw driver 3. Impact drill, drill head, electric drill 4. Electroprobe 5. Universal meter 6. Torque wrench, open-end wrench, inner hexagon spanner 7. Electronic leakage detector 8.

  • Page 55: Installation

    Service Manual 8. Installation 8.1 Installation Dimension Diagram Space to the wall Space to the wall At least 15cm At least 15cm Drainage pipe Installation and Maintenance...
  • Page 56 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 the support of outdoor unit Install wall-mounting (select it according to the actual situation) frame, drill wall holes Connect pipes of indoor Fix outdoor unit...

  • Page 57: Installation Parts-Checking

    Service Manual 8.2 Installation Parts-Checking 8.4 Requirements for electric connection 1. Safety Precaution Name Name (1) Must follow the electric safety regulations when installing the Indoor unit Sealing gum unit. Outdoor unit Wrapping tape (2) According to the local safety regulations, use qualified power Support of outdoor supply circuit and air switch.
  • Page 58 Service Manual Wall Open-end Space wrench Wall to the Space wall to the Union nut above wall 150mm above Pipe Pipe joint Union nut Left 150mm Pipe Torque wrench 2 3/16"(2 3/4") Right (Rear piping hole) 2 3/16"(2 3/4") (For some models) (Rear piping hole) Indoor pipe Fig.5...

  • Page 59: Installation Of Outdoor Unit

    Service Manual (2) Fix the wire crossing board on connection wire sleeve at the Indoor and bottom case; let the connection wire sleeve go through the wire outdoor power cord Indoor unit crossing hole at the back of indoor unit, and then pull it out from pipe the front.(As show in Fig.12) Liquid...
  • Page 60 Service Manual unit weight. 5. Connect Outdoor Electric Wire (3) The outdoor unit should be installed at least 3cm above the (1) Let the connection wire sleeve go through the two holes of floor in order to install drain joint.(As show in Fig.18) baffle;...

  • Page 61: Vacuum Pumping And Leak Detection

    Service Manual 2. Leakage Detection (1) With leakage detector: The drain hos Check if there is leakage with leakage detector. can't raise upwards (2) With soap water: Wall If leakage detector is not available, please use soap water for Fig.24 leakage detection.

  • Page 62: Maintenance

    Service Manual 9. Maintenance 9.1 Error Code List Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display Possible reasons: During cooling and drying operation: 1. Refrigerant was superabundant; except indoor fan operates, all loads stop 2.
  • Page 63 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display When the outdoor unit receive signal of Gathering refrigerant ,the system will Gathering refrigerant Nominal cooling mode be forced to run under cooling mode for gathering refrigerant 1.
  • Page 64 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display 1. Measure the voltage of position L and N on wiring board (XT), if the voltage is higher During cooling and drying operation: than 265VAC, turn on the unit after the supply compressor will stop while indoor fan will voltage is increased to the normal range.
  • Page 65 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display During cooling and drying operation: 1. Wiring terminal OVC-COMP is loosened. In compressor will stop while indoor fan will normal state, the resistance for this terminal Overload protection for operate;...
  • Page 66 Service Manual Display Method of Malfunction Indoor Unit A/C status Possible Causes Name Dual-8 Code Display During cooling and drying operation: Malfunction of phase compressor will stop while indoor fan will current detection circuit operate; Replace outdoor control panel AP1 for compressor During heating operation: the complete unit will stop...
  • Page 67 Service Manual Analysis or processing of some of the malfunction display: 1. Compressor discharge protection Possible causes: shortage of refrigerant; blockage of air filter; poor ventilation or air flow short pass for condenser; the system has noncondensing gas (such as air, water etc.); blockage of capillary assy (including filter); leakage inside four-way valve causes incorrect operation;...

  • Page 68: Procedure Of Troubleshooting

    Service Manual 9.2 Procedure of Troubleshooting 1. Malfunction of Temperature Sensor F1, F2 Main detection points: ● Is the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? ● Is there short circuit due to trip-over of the parts? ●...
  • Page 69 Service Manual 2. Malfunction of Blocked Protection of IDU Fan Motor H6 Main detection points: ● SmoothlyIs the control terminal of PG motor connected tightly? ● SmoothlyIs the feedback interface of PG motor connected tightly? ● The fan motor can't operate? ●...
  • Page 70 Service Manual 3. Malfunction of Protection of Jumper Cap C5 Main detection points: ● Is there jumper cap on the mainboard? ● Is the jumper cap inserted correctly and tightly? ● The jumper is broken? ● The motor is broken? ●...
  • Page 71 Service Manual 4. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8 Main detection points: ● Instant energization afte de-energization while the capacitordischarges slowly? ● The zero-cross detectioncircuit of the mainboard is defined abnormal? Malfunction diagnosis process: Start Turn power off for 1minute,the turn...
  • Page 72 Service Manual 5. High Temperature and Overload Protection (AP1 below means control board of outdoor unit) E8 Start Normal protection, please use it Unit restarts If the outdoor ambient temperature is after improving the outdoor ambient normally higher than 53°C? temperature Improve the radiating environment of Unit restarts...
  • Page 73 Service Manual 6. Malfunction of detecting plate(WIFI) JF Start check if the connection wire are correctly connected detecting Replace the plate with the same model Is malfunction eliminated Replace the mainboard with the same model The end Installation and Maintenance...
  • Page 74 Service Manual Outdoor unit: (1) Capacitor charge fault (Fault with outdoor unit) (AP1 below refers to the outdoor control panel) Main Check Points: ●Use AC voltmeter to check if the voltage between terminal L and N on the wiring board is within 210VAC~240VAC. ●Is the reactor (L) correctly connected? Is the connection loose or fallen? Is the reactor (L) damaged? Fault diagnosis process: Turn on the unit...
  • Page 75 Service Manual (2) IPM protection, phase current overcurrent (the control board as below indicates the control board of outdoor unit) H5/P5 Mainly detect: (1) Compressor COMP terminal (2) voltage of power supply (3) compressor (4) Refrigerant-charging volume (5) air outlet and air inlet of outdoor/indoor unit Troubleshooting: Turn on the unit after energization...
  • Page 76 Service Manual (3) High temperature and overload protection diagnosis (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is outdoor ambient temperature in normal range? ●Are the outdoor and indoor fans operating normally? ●Is the heat dissipation environment inside and outside the unit good? Fault diagnosis process: Overheat and high temperature protection...
  • Page 77 Service Manual (4) Start-up failure (following AP1 for outdoor unit control board) Mainly detect: ●Whether the compressor wiring is connected correct? ●Is compressor broken? ●Is time for compressor stopping enough? Fault diagnosis process: Power on the unit Restart it up after Is stop time of the compressor 3 minutes longer than 3 minutes?
  • Page 78 Service Manual (5) Out of step diagnosis for the compressor (AP1 hereinafter refers to the control board of the outdoor unit) Mainly detect: ●Is the system pressure too high? ●Is the input voltage too low? Fault diagnosis process: Out of step occurs in Out of step occurs once the operation unit is powered on.
  • Page 79 Service Manual (6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: ●Is the PMV connected well or not? Is PMV damaged? ●Is refrigerant leaked? Fault diagnosis process: 20 minutes after the complete unit is powered off Is the terminal FA for the Connect the...
  • Page 80 Service Manual (7) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: ●Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? ●Detect the indoor and outdoor units connection wire and indoor and outdoor units inside wiring is connect well or not, if is there any damage? Fault diagnosis process: Start...
  • Page 81 Service Manual (8) Malfunction of Overcurrent Protection Main detection points: ● Is the supply voltage unstable with big fluctuation? ● Is the supply voltage too low with overload? ● Hardware trouble? Malfunction diagnosis process: Start Normal fluctuation should be within 10 % Is malfunction Is the supply voltage unstable with big fluctuation?

  • Page 82: Maintenance Method For Normal Malfunction

    Service Manual 9.3 Maintenance method for normal malfunction 1. Air Conditioner Can't be Started Up Possible Causes Discriminating Method (Air conditioner Status) Troubleshooting Confirm whether its due to power failure. If yes, No power supply, or poor After energization, operation indicator isnt bright wait for power recovery.
  • Page 83 Service Manual 4. ODU Fan Motor Can't Operate Possible causes Discriminating method (air conditioner status) Troubleshooting Connect wires according to wiring diagram to Wrong wire connection, or poor Check the wiring status according to circuit make sure all wiring terminals are connected connection diagram firmly...

  • Page 84: Exploded View And Parts List

    Service Manual 10. Exploded View and Parts List 10.1 Indoor Unit GWHARC09SA GWARC12SA GWHARC12SA GWARC09S GWARC12S GWHARC09S GWHARC12S The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 85 Service Manual Description Front Panel Assy Display Board Front Case Assy Guide Louver Air Louver Helicoid Tongue Left Axile Bush Rear Case assy Drainage Hose Ring of Bearing O-Gasket sub-assy of Bearing Evaporator Support Cold Plasma Generator Evaporator Assy Wall Mounting Frame Cross Flow Fan Fan Motor Connecting pipe clamp...
  • Page 86 Service Manual GWARC18S GWHARC18S The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 87 Service Manual Description Front Panel Filter Sub-Assy Decorative Strip Front Case Guide Louver Axile Bush Air Louver(Manual) Helicoid Tongue Left Axile Bush Display Board Rear Case assy Rubber Plug (Water Tray) O-Gasket sub-assy of Bearing Ring of Bearing Evaporator Support Evaporator Assy Cross Flow Fan Fan Motor...
  • Page 88 Service Manual GWARC24S GWHARC24S The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 89 Service Manual Description Front Panel Assy Filter Sub-Assy Screw Cover Front Case Assy Air Louver(Manual) Helicoid Tongue Left Axile Bush Rear Case assy Rubber Plug (Water Tray) Ring of Bearing O-Gasket sub-assy of Bearing Cross Flow Fan Evaporator Support Evaporator Assy Cold Plasma Generator Wall Mounting Frame Motor Press Plate...
  • Page 90 Service Manual GWARC36S2 GWHARC36S2 The component picture is only for reference; please refer to the actual product. Installation and Maintenance...
  • Page 91 Service Manual Description Description Detecting Plate Fan Motor Front Panel Pipe Clamp Stand Bar Drainage Hose Filter Sub-Assy Cover Plate Front Case Sub-assy Motor Fixed Clip 1 Lower Guide Louver SteppingMotor Upper Guide Louver Press Plate(Crank) Axile Bush Crank-guide Air Louver 1 Upper Crank Air Louver 2 Lower crank...

  • Page 92: Outdoor Unit

    Service Manual 10.2 Outdoor Unit GRARC09AS The component picture is only for reference; please refer to the actual product. Description Description Description 1 Front Grill 13 Cover of Pass Wire 25 Top Cover Sub-Assy 2 Front Panel Assy 14 Cable Cross Plate 2 26 Condenser Assy 3 Axial Flow Fan 15 Right Side Plate Assy...
  • Page 93 Service Manual GRHARC09AS The component picture is only for reference; please refer to the actual product. Description Description Description 1 Front Grill 13 Cover of Pass Wire 24 Electric Box Cover Sub-Assy 2 Front Panel Assy 14 Cable Cross Plate 2 25 Top Cover Sub-Assy 3 Axial Flow Fan 15 Right Side Plate Assy...
  • Page 94 Service Manual GRARC12ASA The component picture is only for reference please refer to the actual product. Description Description Description 1 Front Grill 11 Valve 22 Rear Grill 2 Cabinet 12 Valve 23 Condenser Assy 3 Axial Flow Fan 13 Valve Support 24 Clapboard Sub-Assy 4 Fan Motor 14 Cable Cross Plate sub-assy...
  • Page 95 Service Manual GRHARC09ASA GRHARC12ASA The component picture is only for reference; please refer to the actual product. Description Description Description 1 Front Grill 13 Cover of Pass Wire 24 Capacitor Box Sub-Assy 2 Front Panel Assy 14 Right Side Plate Assy 25 Top Cover Sub-Assy 3 Axial Flow Fan 15 Cable Cross Plate 2...
  • Page 96 Service Manual GRARC12AS The component picture is only for reference; please refer to the actual product. Description Description Description 1 Left Side Plate 11 Inhalation Tube Sub-assy 21 Electric Box 2 Fan Motor 12 Cable Cross Plate Sub-assy 22 Electrical box cover 3 Motor Support 13 Cut off Valve 23 Main Board...
  • Page 97 Service Manual GRHARC12AS The component picture is only for reference; please refer to the actual product. Description Description Description 1 Front Grill 14 Valve 26 Clapboard Sub-Assy 2 Cabinet 15 Valve Cover 27 Top Cover Plate 3 Axial Flow Fan 16 Cable Cross Plate 1 28 Motor Support 4 Fan Motor...
  • Page 98 Service Manual GRARC18AS The component picture is only for reference; please refer to the actual product. Description Description Description 1 Front Grill 12 Big Handle 23 Condenser Support Plate 2 Cabinet 13 Right Side Plate 24 Left Side Plate 3 Axial Flow Fan 14 Wire Clamp 25 Electric Box Assy 4 Chassis Sub-assy...
  • Page 99 Service Manual GRARC24AS The component picture is only for reference; please refer to the actual product. Description Description Description Front Grill 12 Cut off Valve Sub-Assy 23 Condenser Support Plate Cabinet 13 Right Side Plate 24 Left Side Plate Axial Flow Fan 14 Valve Cover 25 Handle Fan Motor...
  • Page 100 Service Manual GRHARC18AS GRHARC24AS The component picture is only for reference; please refer to the actual product. Description Description Description Front Grill 12 Cut off Valve Sub-Assy 23 Condenser Support Plate Cabinet 13 Right Side Plate 24 Left Side Plate Axial Flow Fan 14 Valve Cover 25 Handle...
  • Page 101 Service Manual GRARC36AS2 The component picture is only for reference; please refer to the actual product. Description Description Description 23 Baffle(Valve Support) Front Grill 12 Motor Support Sub-Assy Fan Motor 13 Condenser Support Plate 24 Electronic Expansion Valve Front Side Plate 14 Clapboard Sub-Assy 25 Inhalation Tube Sub-assy Radiator...
  • Page 102 Service Manual GRHARC36AS2 The component picture is only for reference; please refer to the actual product. Description Description Description 1 Front Grill 12 Motor Support Sub-Assy 23 Supporter 2 Fan Motor 13 Condenser Support Plate 24 Electronic Expansion Valve 3 Electric box 14 Clapboard Sub-Assy 25 4-Way Valve Assy 4 Radiator...

  • Page 103: Removal Procedure

    Service Manual 11. Removal Procedure Caution: discharge the refrigerant 11.1 Removal Procedure of Indoor Unit completely before removal. Step Procedure 1. . Remove filter assemb Front panel Open the front panel. Push the left filter and right filter until they are separate from the groove on the front panel.
  • Page 104 Service Manual Step Procedure 4. Remove detecting plate and electric box cover 2 Screw Electric box cover2 Remove the screw fixing detecting plate and then remove the detecting plate. Detecting plate Note:The position of detection board(WIFI) Screw may be different for -different models. for 09K Detecting plate Remove the screw fixing electric box...
  • Page 105 Service Manual Step Procedure 7. . Remove electric box as Screw Loosen the connection clasps between shield cover of electric box sub-assy and Clasps 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 106 Service Manual Step Procedure Instruction: Some wiring terminal of this product is with lock catch and other devices. circlip The pulling method is as below: holder 1. 1.Remove the soft sheath for some termina at first, hold the circlip and then pull out the terminals.
  • Page 107 Service Manual Step Procedure 9. . Remove motor and cross flow bla Remove the screws fixing motor clamp Screws and then remove the motor clamp. Motor clamp Cross flow Remove the screws at the connection Screw Motor place of cross flow blade and motor; lift Holder the motor and cross flow blade upwards sub-assy...
  • Page 108 Service Manual Caution: discharge the refrigerant completely before removal. 18/24K 1. Remove filter as s y Front panel Open the front panel. Push the left and right filters to make them break away from the groove on the front case. Then remove the left Front and right filters one by one.
  • Page 109 Service Manual Electric box cover 2 4. Remove electric box cover 2 and detecting plate(WIFI) Screw Remove the screws on the electric box cover 2 and detecting plate(WIFI), then remove the electric box cover 2 and Screws detecting plate(WIFI). Detecting plate (WIFI) Loosen the connection clasps between front case sub-assy and bottom case.
  • Page 110 Service Manual Indoor tube temperature s ensor Cut off the wire binder and pull out the indoor tube temperature sensor. Screw off one grounding screw. Main Remove the wiring terminals of motor and board stepping motor. Remove the electric box assy. G rounding Screw off the screws that are locking each s c rew...
  • Page 111 Service Manual G roove R ear case ass y First remove the left side of evaporator from the groove on the rear case assy. Then remove the right side from the clasp on the C lasp rear case assy. Installation and Maintenance...
  • Page 112 Service Manual Installation and Maintenance...
  • Page 113 Service Manual Caution: discharge the refrigerant completely before removal. Steps Procedure 1.Before disassembly of the unit Axonometric drawing for the complete unit. 2.Remove filter panel Open the panel. Loosen the clasps on the filter. clasps Draw out two pieces of filter. filter Installation and Maintenance...
  • Page 114 Service Manual Steps Procedure 3.Remove display Remove screws fixing display, and then remove the display. display 4.Remove panel clasp Pull the clasps at both sides slightly, and then remove the panel. panel 5.Remove horizontal louver Remove the axial bush on the horizontal louver, and then remove the horizontal louver.
  • Page 115 Service Manual Steps Procedure 6.Remove top cover of electric box Remove screws fixing the top cover of electric box. screw Remove the top cover of electric box. top cover of electric box screw cap 7.Remove front case Remove the screw caps on front case. screw Remove screws connecting the front case.
  • Page 116 Service Manual Steps Procedure 8.Remove earthing wire screw Remove earthing screws, and then remove the earthing wire. 9.Remove electric box cover clasp Loosen clasps at the left side of electric box. Loosen clasps on the right side of electric box. clasp electric box cover Remove electric box cover.
  • Page 117 Service Manual Steps Procedure 10.Remove temperature sensor Pull out the indoor temperature sensor. temperature sensor 11.Remove electric box Pull out 6 sockets on PCB board. Pull out two screws on electric box. screw electric box Remove the electric box. Installation and Maintenance...
  • Page 118 Service Manual Steps Procedure 12.Remove water tray water tray Pull the water tray upwards, and then remove the water tray. 13.Remove connection pipe between indoor and outdoor units Separate the connection pipe between indoor and outdoor units. connection position for indoor and outdoor units' connection pipe 14.Remove pipe-stopping plate Remove two screws on pipe-stopping plate for indoor unit, and then remove the pipe-stopping...
  • Page 119 Service Manual Steps Procedure 16.Remove evaporator screw Remove screws between evaporator and bottom case. Turn over the indoor unit and adjust the pipe line to the position as shown by the broken line. Lift up the evaporator, and then remove the evaporator.
  • Page 120 Service Manual Steps Procedure 18.Remove cross flow blade and motor blade motor Remove screws fixing cross flow blade and motor. Remove the motor sub-assy. Separate two cross flow blade. Installation and Maintenance...
  • Page 121 Service Manual Steps Procedure 19.Remove cushion rubber Remove the cushion rubber on cross flow blade. cushion rubber Remove the cushion rubber from the base. Installation and Maintenance...

  • Page 122: Removal Procedure Of Outdoor Unit

    Service Manual 11.2 Removal Procedure of Outdoor Unit Warning: Be sure to wait for a minimum of 20 minutes after turning off all power supplies and discharge the refrigerant completely before removal. GRHARC09ASA GRARC12ASA GRHARC12ASA GRARC18AS NOTE: Take heat pump for example. Steps Procedure 1.Remove cable cross plate sub-assy...
  • Page 123 Service Manual Steps Procedure 4.Remove front panel front panel Remove connection screws connecting the front panel with the chassis and the motor support, and then remove the front panel. 5.Remove right side plate Remove connection screws connecting the right side plate right side plate with the valve support and the electric box.
  • Page 124 Service Manual Steps Procedure 7.Remove motor and motor support motor support tor Pull out the lead-out wire and remove themotor. Remove the 2 tapping screws re-move it. motor 8.Remove electric box assy electric box assy Remove the 2 screws fixing the cover of elec-tric box.
  • Page 125 Service Manual Steps Procedure 10.Remove 4-way valve assy 4-way valve assy Unscrew the fastening nut of the 4-way Valve Assy coil and remove the coil. Wrap the 4-way Valve Assy with wet cotton and unsolderthe 4 weld spots connecting the 4-way Valve Assy to take it out(Note: Refrig- erant shouldbe discharged firstly.) Welding processshould be as quickly as possible and...
  • Page 126 Service Manual GRARC09AS GRHARC09AS GRARC12AS GRHARC12AS NOTE: Take heat pump for example. Step Procedure 1. Before disassembly 2. Remove cable cross plate sub-assy and valve cover Cable Cross Plate Sub-assy Remove the screws fixing cable cross plate sub-assy, valve cover and then remove them. Valve Cover 3.
  • Page 127 Service Manual Step Procedure 4. Remove front panel assy Remove connection screws connecting the front panel assy with the chassis and the motor support, and then remove the front panel assy. front panel 5. Remove rear grill and left, right side plate assy Rear grill right side plate Remove the screws fixing rear grill, right side plate, left...
  • Page 128 Service Manual Step Procedure 7. Remove motor and motor support Remove the screws fixing motor and then remove the motor. Remove the screws fixing motor support and then remove the motor support. motor motor support 8. Remove electric box assy electric box assy Remove the screws fixing electric box assy;...
  • Page 129 Service Manual Step Procedure 10. Remove 4-way valve assy and electronic expansion valve assy 4-way valve assy Unsolder the welding joints connecting the 4-way valve assy with capillary sub-assy, compressor and condenser; remove the 4-way valve. Note: Before unsoldering the welding joint, wrap the 4-way valve with a wet cloth completely to avoid damage to the valve caused by high temperature.
  • Page 130 Service Manual GRARC24AS GRHARC18AS GRHARC24AS NOTE: Take heat pump for example. Steps Procedure 1. Remove big handle,valve cover and top cover big handle Remove the screw connecting the big handle and right side plate, and then remove the big handle. Remove the screw connecting the valve cover and right side plate, and then remove the valve cover.
  • Page 131 Service Manual Steps Procedure Remove the screws connecting the outer case with motor support, isolation plate and chassis; lift the outer case upwards; loosen the clasps of outer case with right side plate and left side plate, and then remove the outer case. outer case 3.
  • Page 132 Service Manual Steps Procedure 4. Remove axial flow blade Remove the nut fixing axial flow blade and then remove the blade. axial flow fan motor support Remove the 6 screws fixing the motor and then remove the motor. Remove the 2 screws connecting the motor support and chassis, and then loosen the stopper to remove the motor support.
  • Page 133 Service Manual Steps Procedure 6. Remove 4-way valve assy Unsolder the welding joints connecting the 4-way valve assy with capillary sub-assy, compressor and condenser; remove the 4-way valve. Welding joints Note: Before unsoldering the welding joint, wrap the 4-way valve with a wet cloth completely to avoid damage to the valve caused by high temperature.
  • Page 134 Service Manual Steps Procedure 9. Remove compressor Remove the 3 foot nuts fixing compressor and then lift the compressor upwards to remove the compressor compressor and damping cushion. Note: Keep the ports of discharge pipe and suction pipe from foreign objects. Installation and Maintenance...
  • Page 135 Service Manual GRARC36AS2 GRHARC36AS2 NOTE: Take heat pump for example. Step Procedure 1. Before disassembly 2. Remove cable cross plate sub-assy and valve cover Cable Cross Plate Sub-assy Remove the screws fixing cable cross plate sub-assy, valve cover and then remove them. Valve Cover 3.
  • Page 136 Service Manual Step Procedure 4. Remove front side panel Remove the screws fixing the front side panel and then remove the front side panel. front side panel 5.Remove front panel assy Remove the screws fixing the front panel assy and then remove the front panel assy.
  • Page 137 Service Manual Step Procedure 7. Remove axial flow blade Remove the nut fixing the blade and then remove the axial flow blade. axial flow blade 8. Remove motor motor Remove the screws fixing motor and then remove the motor. 9. Remove motor support Remove the screws fixing motor support and then remove the motor support.
  • Page 138 Service Manual Step Procedure 10. Remove rear grill and right side plate assy right side plate Remove the screws fixing rear grill, right side plate and then remove them. rear grill 11. Remove 4-way valve assy 4-way valve assy Unsolder the welding joints connecting the 4-way valve assy with capillary sub-assy, compressor and condenser;...
  • Page 139 Service Manual Step Procedure 13. Remove electric expansion valve sub-assy Remove the terminals of the electronic expansion valve coil and rotate to remove the electronic expansion valve electric expansion coil. valve sub-assy Unsolder the welding joint connecting the electronic expansion valve and then remove the electronic expansion valve sub-assy.

  • Page 140: Appendix

    Service Manual Appendix: Appendix 1: Reference Sheet of Celsius and Fahrenheit Conversion formula for Fahrenheit degree and Celsius degree: Tf=Tcx1.8+32 Set temperature Fahrenheit Fahrenheit Fahrenheit display display display Fahrenheit Fahrenheit Fahrenheit Celsius( Celsius( Celsius( temperature temperature temperature 60.8 69/70 69.8 78/79 78.8 62/63...

  • Page 141: Appendix 3: Pipe Expanding Method

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

  • Page 142: 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) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Resistance(kΩ) Temp( Temp( Temp( Temp( 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 143 JF00305033 Refricenter of Miami, Inc. Add: 7101 N.W. 43rd Street Miami, Florida 33166 For product improvement, specifications and appearance in this manual are subject to change without prior notice.

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