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Summary of Contents for Gree GWH18RC-K3DNA2C
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Page 1: Service Manual
Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI... - Page 12 220V Conditions 220V Indoor:DB27°C/WB19°C Outdoor:DB35°C/WB24°C Indoor air flow:Super High 230V Pipe length:5m 230V 240V Conditions Indoor:DB20°C/WB15°C 240V Outdoor:DB7°C/WB6°C Indoor air flow:Super High Pipe length:5m 10 20 30 40 50 60 70 80 90 100 Compressor speed (rps) Compressor speed (rps) Conditions Conditions Indoor:DB20°C/WB15°C...
- Page 13 High Super High Middle Compressor frequency/Hz Indoor Fan Motor Rotating Speed...
- Page 15 1000...
- Page 16 1000...
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Page 17: Indoor Unit
Outdoor unit Indoor unit Gas pipe side Valve 4-Way valve Di s charge Heat Suction exchanger (evaporator) Heat exchanger Liquid pipe (condenser) side Valve Capillary Strainer Strainer COOLING HEATING... - Page 18 POWER...
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Page 19: Printed Circuit Board
TUBE ROOM MOTOR TEMP. SENSOR TEMP. SENSOR TERMINAL TUBE ROOM BLOCK N(1) COM-OUT PRINTED CIRCUIT BOARD JUMP AC-L YEGN (SWING) C0NNECTI N G SWING-UD DISP1 DISP2 CABLE HEALTH-L HEALTH-N YEGN EVAPORATOR COLD PLASMA GENERATOR RECEIVER AND SWING MOTOR DISPLAY BOARD... - Page 20 OVERLOAD WARNING COMP. PROTECTOR Please don't touch any terminal when the voltage of terminal P(DC+) and N(DC-) at COMP 6YEGN AP1 is higher than 30V to prevent the risk of electrical shock! OUTTUBE OUTROOM EXHAUST U(R) V(S) W(C,T) MAGNETIC TEMP. SENSOR TEMP.
- Page 21 Please don't touch any terminal when the voltage of terminal P(DC+) and N(DC-) at AP1 is higher than 30V to prevent the risk of electric shock !
- Page 23 ● Top view ● Bottom view...
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Page 25: Timer On / Timer Off
ON/OFF button - button + button MODE button H O U R ONOFF FAN button SWING button I FEEL button button SLEEP button TEMP button TIMER-ON button CLOCK button TIMER-OFF button TURBO button LIGHT button X-FAN button Set fan speed I feel Send signal heating function... - Page 26 no display...
- Page 28 battery reinstall remove Cover of battery box Panel Emergency operation switch...
- Page 29 Indoor Unit Temperature Parameter Room setting temperature (T preset Room ambient temperature (T .) (temperature sensor :15K, partial pressure resistance:15K) Surface temperature of copper pipe for indoor heat exchanger (T ) (temperature sensor: 20K, partial pressure resistance: 20K) indoor tube 1.
- Page 30 When multiple malfunctions occurred simultaneously, malfunction protection codes will be displayed in cycle. 3.Other Control Target (1) Up&down swing function: the mode for swing motor is MP28VB(18K),MP35XX(24K). air outlet. If swing function has not been set after startup of the unit, up & down horizontal louver will clockwise turn to position D in HEAT mode, or clockwise turn to level position L in other modes.
- Page 31 (3) Timer Change: Timer ON and Timer OFF can be set via remote ON/OFF button,Timer time can be reset and the system will operate according to the latest setting. When the unit is on and Timer ON and Timer OFF are both set,the system will operate according to the set state.When the timer off time is reathed,the system will stop.
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Page 32: Outdoor Units
Outdoor Units 1. Input Parameter Compensation and Calibration (1) Check the input parameter compensation function As the instruction feature of split unit, concerning the comfortable, in heating mode, the indoor ambient temperature of compressor stopping time is higher than preset temperature. (2) Check effective judgment controls of parameters Effective judgment function of the outdoor exhaust temperature thermo-bulb When conditions a and b are satisfied, the outdoor exhaust temperature thermo-bulb is judged not to be connected into place, the... - Page 33 (6) Compressor Control 1. The frequency of compressor will be controlled with the relationship of ambient temperature and preset temperature and changing speed of ambient temperature; 2. Start the compressor after starting cooling, heating, dry operations, and the outdoor fan start for 5s; 3.
- Page 36 Space to the wall Space to the wall At least 15cm At least 15cm Drainage pipe...
- Page 37 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...
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Page 39: Outlet Pipe
Wall Wall Level meter Mark in the middle of it Space Space to the to the Open-end wrench wall wall above above Union nut 150mm 150mm Pipe Pipe joint Union nut Pipe Torque wrench Right Left Φ55/70mm Φ55/70mm Indoor pipe Rear piping hole Rear piping hole Insulating pipe... - Page 40 Panel Screw Wiring cover Indoor and outdoor power cord Indoor unit pipe Liquid pipe Band Drain hose connection wire sleeve Drain hose Connection pipe Band Indoor power cord Cooling and heating unit blue black brown yellow- green Connect to outdoor unit Wiring board ( 1 ) Wire clip...
- Page 41 GWH18RC-K3DNA3C/O GWH24RD-K3DNA3C/O N(1) handle yellow- blue black brown green Indoor unit connection GWH24RD-K3DNA8C/O valve GWH18RC-K3DNA8C/O N(1) yellow- yellow- black brown green green blue blue brown Drain vent Chassis Indoor unit connection Power Outdoor drain join t Drain hose At least 3cm above the floor Foot holes Foot holes The drain hos...
- Page 42 The drain hose can't be fluctuant The water outlet can't be placed The drain hose in water can't be fluctuant The water outlet can't be fluctuant Liquid valve Piezometer Gas valve Valve cap Refrigerant charging vent Nut of refrigerant Charging vent Vacuum pump Inner hexagon spanner...
- Page 49 Troubleshooting for F1,F2 malfunction the wiring terminal between the temperature sensor and the controller loosened or poorly contacted? Insert the temperature sensor tightly Is malfunction eliminated Is there short circuit due to trip - over of the parts? Make the parts upright Is malfunction eliminated Is the...
- Page 50 Troubleshooting for H6 malfunction Stir the blade with a tool to see whether the blade rotates smoothly Tighten the screw; reassemble the blade, motor and shaft bearing rubber base sub-assy to make sure there is no foreign object between them Is malfunction eliminated Is the...
- Page 51 Troubleshooting for C5 malfunction Appearance of Is there jumper cap on the the jumper cap mainboard ? Assemble the jumper cap with the same model Is malfunction eliminated the jumper cap inserted correctly and tightly ? Insert the jumper cap tightly Is malfunction eliminated...
- Page 52 Troubleshooting for E5 malfunction Is the supply voltage unstable Normal fluctuation is within 10 % of the rated Malfunction is with big fluctuation? voltage on the nameplate eliminated Is the supply voltage too low Malfunction is Adjust the supply voltage to maintain it within Malfunction is with overload? eliminated...
- Page 53 Troubleshooting for U8 malfunction Re-energize1 minute after de-erergization The unit returns to normal. Conclusion:U8 is displayed due U8 is still to instant energization afte de- displayed energization while the capacitor discharges slowly. The zero-cross detection circuit of the mainboard is defined abnormal.Replace the mainboard with the same model...
- Page 54 Turn on the unit and wait 1 minute Use AC voltmeter to measure the voltage on the two ends of electrolytic capacitor (see fig 30) Malfunction of Replace outdoor Voltage higher the outdoor mainboard than 200V? mainboard AP1 Measure the voltage input with AC voltmeter (see fig 30) Power supply is...
- Page 55 H5, H7 or P5 is displayed after turning on the unit Measure if the voltage The unit starts Repair power supply to make input is within 180~265V Restart the unit operation again the power voltage normal with AC voltmeter (see fig 30) The compressor Adjust it properly The unit starts...
- Page 56 E8 is displayed Normal protection, please If the outdoor Unit restarts use it after improving the ambient temperature is higher normally outdoor ambient temperature than 53 ? Improve the radiating environment If the radiating of indoor of unit (clean the heat exchanger Unit restarts and outdoor unit is good? and remove surrounding obstacles)
- Page 57 Turn on the unit The stop time is not sufficient and If the stop time of compressor the high and low pressure of system is more than 3min? is not balanced , please start the unit after 3min Check the connection situation of outdoor mainboard AP1 and If the compressor wire compressor COMP, and the...
- Page 59 H3 or E4 is displayed 30min after power off the unit If the overload protector SAT is well connected? Under ambient temperature, test the resistance of overload protector with ohmmeter; resistance value should be 1000ohm Connect wire If the wiring terminal FA of electronic according to wiring expansion valve is well connected? diagram...
- Page 60 start If power plug is connected Is the malfunction Connect the plug correctly well with the socket eliminated? Check the connection wire between reactor mainboard and situation of connection Reconnect the wire or Power on and If there is short circuit or the replace the connection Is the malfunction restart the unit...
- Page 61 If the unit operates normally before malfunction Check the connection wire according to the wiring diagram. Check built-in wiring If the connection wire of indoor and outdoor is connected well? unit Reconnect the wire or Replace the If the wiring is replace the connection wire damaged?
- Page 82 1. Before disassembly Before disassembly Remove the filter Open the front panel. screw Push the filter upward and then pull it outward to remove it. filter...
- Page 83 Remove the horizontal louver Remove the axile bush on the horizontal louver. axile bush Pull the horizontal louver outward to remove it. horizontal louver 4. Remove the panel panel Loosen the screws fixing the indicator. Remove the indicator. display Along the groove fixing front panel, slide the rotor shaft outward to remove the front panel.
- Page 84 Remove the electric box cover Loosen the screw of the electric box cover. electric box cover Remove the electric box cover. Remove the front case Open the screw cap on the front case. Remove the screws fixing the front case. clasps Loosen the clasps of the front case.
- Page 85 Remove the front case. front case 7. Remove the vertical louver Loosen the 10 clasps connecting the vertical louver and bottom case subassembly. clasps Remove the vertical louver. vertical louver 8. Remove the electric box subassembly temperature sensor Disconnect the indoor tube temperature sensor.
- Page 86 ground wire screw Remove the screws at the joint of the ground wire and evaporator. Loosen the clasp at the joint of the electric box cover and the electric box. electric box Disconnect the wiring terminal of the wiring terminal motor and step motor on the electric of motor box.
- Page 87 9. Remove press plate of connecting pipe Pipe Clamp Auxiliary piping Remove the screws of the press plate of connecting pipe. Remove press plate of connecting pipe. 10. Remove the evaporator Remove the screws at the joint of the evaporator and bottom case.
- Page 88 Auxiliary piping Adjust the pipe slightly to separate the connecting pipe and the evaporator. Remove the evaporator. evaporator 11. Remove motor and cross flow fan step motor Remove the screw of the step motor and remove the step motor. Remove the screw of the motor press press plate plate.
- Page 91 grounding wire retainer high and low pressure switch Terminal of Terminal of 4-way valve compressor Terminal of overload outdoor fan protection Terminal of temperature sensor circlip PFC induction Terminal of wire compressor wire...
- Page 92 screws electric box assy electric box clasp(right) cover clasp(left) screws screws screws screws screws screws...
- Page 93 sticking stripe soundproof sponge...
- Page 96 Steps Procedure 1. Remove top cover and front side plate top panel Use the screwdriver to remove the screws connecting the top panel and panel and side panels. Remove the top panel.Loosen the screws fixing the valve cover and then remove the valve cover.
- Page 97 Steps Procedurs 3. Remove panel Twist off the screws connecting the panel, chassis and motor support with screwd- river, and then remove the panel. panel 4. Remove guard grille guard grille Twist off the screws fixing the guard grille and then remove the guard grille. 5.
- Page 98 Steps Procedure 6. Remove right side plate right side plate Twist off the screws connecting the right side plate and chassis, valve support and condenser, and then remove the right side plate. 7. Remove electric box electric box cover Twist off the screws on electric box cover with screwdriver, and then remove the electric box cover.
- Page 99 Steps Procedure electric box 1 Twist off the screws between electric box 1 and left side plate with screw- driver, pull it upwards to remove the electric box 1. 8. Remove left side plate left side plate Twist off the screws connecting the left side plate and chassis with screwdriver, and then remove the left side plate.
- Page 100 Steps Procedure 10. Remove motor and motor support Twist off the tapping screws fixing the motor, pull out the pin of leading wire for motor and then remove the motor. motor motor support Twist off the tapping screws fixing the motor support, pull it upwards and then remove the motor support.
- Page 101 Steps Procedure 12. Remove gas valve and liquid valve Twist off the 2 bolts fixing the valve sub-assy. Unsolder the soldering joint between gas valve and air-return pipeand then remove the gas valve.(note: when unsoldering the soldering joint, wrap the gas valve with wet cloth completely to avoid the damage to valve, and release all refrigerant completely at...
- Page 102 Steps Procedure 15. Remove support plate of condenser Twist off the screws connecting the support plate of condenser and condenser with screwdriver, and then remove the support plate of condenser. support plate of condenser 16. Remove chassis and condenser Pull it upwards to separate the chassis and condenser.
- Page 104 Pipe Pipe cutter Leaning Uneven Burr Pipe Shaper Downwards Union pipe Pipe Hard mold Expander Pipe Smooth surface Improper expanding damaged leaning crack uneven surface thickness The length is equal...
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Page 108: Gree Electric Appliances,Inc.of Zhuhai
GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 Email: gree@gree.com.cn Http://www.gree.com HONG KONG GREE ELECTRIC APPLIANCES SALES LIMITED Add: Unit 2612,26/F.,Miramar Tower 132 Nathan Road,TST,Kowloon,HK Tel: (852) 31658898 Fax: (852) 31651029...