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Related Manuals for Gree GWH18RC-K3DNA1A
Summary of Contents for Gree GWH18RC-K3DNA1A
- Page 1 Change for Life Service Manual GREE ELECTRIC APPLIANCES,INC.OF ZHUHAI...
- Page 5 Installing, starting up, and servicing air conditioner can be Make sure the outdoor unit is installed on a stable, level hazardous due to system pressure, electrical components, surface with no accumulation of snow, leaves, or trash and equipment location, etc. beside.
- Page 12 18K: Heating Cooling 220V 220V • Conditions Indoor : DB27˚C/WB19˚C Outdoor : DB35˚C Indoor air flow : Super High Pipe length : 5m 230V 230V 240V • Conditions 240V Indoor : DB20˚C Outdoor : DB7˚C/WB6˚C Indoor air flow : Super High Pipe length : 5m 10 20 30 40 50 60 70 80 90 100...
- Page 13 24K: Cooling Heating • Conditions • Conditions Indoor : DB20˚C/WB19˚C Indoor : DB20˚C Indoor air flow : Super High Indoor air flow : Super High Pipe length : 5m Pipe length : 5m –15 –10 –5 ˚ ( ˚ ( Cooling Heat exchanger pipe Standard...
- Page 14 Indoor side noise when blowing Heating Cooling High Middle Indoor fan motor rotating speed Compressor frequency(Hz)
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Page 17: Indoor Unit
Indoor unit Outdoor unit Wide tube service Accumlator valve Wide tube 4-way valve Narrow tube service valve Narrow tube Strainer Capillary tube Cooling cycle Heating cycle Outdoor unit Indoor unit Wide tube service Accumlator valve Wide tube 4-way valve Narrow tube service Narrow tube... - Page 18 Symbol Parts name Symbol Color symbol Symbol Color symbol OVERLOAD BLUE VIOLET COMP COMPRESSOR YELLOW ORANGE PROTECTIVE EARTH BLACK YEGN YELLOW GREEN CBB61 BROWN CBB65 RECEIVER AND DISPLAY BOARD TUBE ROOM TEM. SENSOR TEM. SENSOR BU(WH) BN(BK) YEGN(GN) TERMINAL DISP1 DISP2 ROOM TUBE...
- Page 19 RECEIVER AND POWER DISPLAY BOARD TUBE ROOM TEM. SENSOR TEM. SENSOR YEGN TERMINAL TUBE ROOM DISP1 DISP2 BLOCK N(1) COM-OUT YEGN JUMP AC-L L-OUT SWING-UD 4YEGN K111 EARTH-PLATE EVAPORATOR SWING MOTOR MOTOR COMPRESSOR 6YEGN R(M,V) COMP S(W,X) OUTROOM EXHAUST C(T,U) OUTTUBE TEM.SENSOR TEM.SENSOR...
- Page 20 COMPRESSOR WARNING Please don't touch any terminal when the voltage of terminal P(DC+) and N(DC-) at COMP AP1 is higher than 30V to prevent the risk YEGN of electrical shock! YEGN COMP-U COMP-V COMP-W YEGN T-SENSOR OVC-COMP N(1) COM-INNER(1) MAIN BOARD AP1 AC-L TERMINAL BLOCK OFAN...
- Page 22 Compressor overload Compressor interface Temperature sensor Electric expansion valve protector Communication interface Fan HALL interface Outdoor fan 4-way valve with indoor unit Live wire Earthing wire Neutral wire Reactor interface 1 PFC capacitor interface 1 Reactor interface 2...
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Page 23: Mode Icon
ON/OFF Button Button Button MODE Button ： H O U R ONOFF FAN Speed Button SWING Button; I FEEL Button Button Sleep Mode Button Temperature Display Button TIMER ON Button Clock Button TIMER OFF Button TURBO Button Light Mode Button X-FAN Button 18 19 20 21 MODE icon:... - Page 24 SLEEP icon : is displayed by pressing the SLEEP button. Press this button again to clear the display. LIGHT icon: is displayed by pressing the LIGHT button. Press LIGHT button again to clear the display. TEMP icon: Pressing TEMP button, (set temperature), (intdoor ambient temperature), (outdoor ambient temperature) and blank...
- Page 25 Remote Controller Description ON/OFF Press this button to turn on the unit .Press this button again to turn off the unit. Press this button to decrease set temperature. Holding it down above 2 seconds rapidly decreases set temperature. In AUTO mode, set temperature is not adjustable. Press this button to increase set temperature.Holding it down above 2 seconds rapidly increases set temperature.
- Page 26 SLEEP: Press this button to go into the SLEEP operation mode. Press it again to cancel this function. This function is available in COOL , HEAT (Only for models with heating function) or DRY mode to maintain the most comfortable temperature for you.
- Page 27 ℃ Combination of " TEMP " and "CLOCK" buttons : About 8 Heating Function Press “TEMP” and “CLOCK” simultaneously ℃ in HEAT mode to start Heating Function Nixie tube on the remote controller displays “ ” and a selected temperature of “8 ℃...
- Page 28 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 29 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. （0℃） 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 30 Indoor fan can be set at super-high, high, medium or low. Meanwhile, the fan will operate at super-high, high, medium and low fan speed respectively and it can also set at auto fan speed. (8) Memory Function Memory content includes mode, up & down swing, light, set temperature and set fan speed, general timer (clock timer cant be memorized), Upon power failure, the unit after power recovery will automatically start operation according to memorized content.
- Page 31 (1) If T ≥ [T ], the temperature can be set at: 16~30 C (Cooling at room temperature); outdoor ambient low-temperature cooling (2) If T < [T ], the temperature can be set at: 25~30 C (Cooling at low temperature), that is, the minimum setting outdoor ambient low-temperature cooling temperature for outdoor unit judgment is 25...
- Page 32 (9) Current protection 1. If 12A≤I , running frequency of compressor will be decreased or stop to increase will be occurred; alternating-current 2. If 17A≤I , the unit will stop; and compressor has stopped for 3min, the unit will resume running; alternating-current 3.
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Page 33: Installation Site Instructions
Caution 1.The unit should be installed only by authorized service center according to local or government regulations and in compliance with this manual. 2.Before installing, please contact with local authorized maintenance center. If the unit isnot installed by the authorized ser vice center, the malfunction may not be solved due to incovenient contact between the user and the service personnel. -
Page 34: Installation Site Of Outdoor Unit
Installation Site of Outdoor Unit 7.1.3 1.Select a site where noise and outflow air emitted by the unit will not annoy neighbors. 2.Select a site where there is sufficient ventilation. 3.Select a site where there is no obstruction blocking the inlet and outlet. 4.The site should be able to withstand the full weight and vibration. - Page 35 Space to the ceiling 15cm Above Space to the wall 15cm Above 15cm Above Space to the wall Above Above Air outlet side Space to the floor The dimensions of the space necessary for proper installation of the unit includ e the minimum permissible distances to adjacent parts .
- Page 36 7.3.1 Installation of Mounting Plate 1.Mounting plate should be installed horizontally. As the water tray's outlet for the indoor unit is two-way type, during installation, the indoor unit should slightly slant to water tray's outlet for smooth drainage of condensate. 2.Fix the mounting plate on the wall with screws.
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Page 37: Electric Wiring
NOTE: All wires between indoor and outdoor units must be connected by the qualified electric contractor. Electric wires must be connected correctly. Improper connection may cause malfunction. Tighten the terminal screws securely. After tightening the screws, pull the wire slightly to confirm whether it's firm or not. Make sure that the electric connections are earthed properly to prevent electric shock. -
Page 38: Air Purging And Leakage Test
7.4.2 Air Purging and Leakage Test 1. Connect charging hose of manifold valve to charge end of low pressure valv e (both high/low pressure valves must be tightly shut). Manifold Valve Multimeter 2. Connect joint of charging hose to vacuum pump. Manometer -76cmHg 3. -
Page 39: Operation Test
7.5.2 Operation Test 1.Before Operation Test (1)Do not switch on power before installation is finished completely. (2)Electric wiring must be connected correctly and securely. (3)Cut-off valves of the connection pipes should be opened. (4)All the impurities such as scraps and thrums must be cleared from the unit. 2.Operation Test Method (1)Switch on power and press "ON/OFF"... - Page 54 Be cautious during installation and maintenance. Do operation following the regulations to avoid electric shock and casualty or even death due to drop from high attitude. * Static maintenance is the maintenance during de-energization of the air conditioner. For static maintenance, make sure that the unit is de-energized and the plug is disconnected. *dynamic maintenance is the maintenance during energization of the unit.
- Page 60 (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 210V AC~240V AC. If the reactor(L) is correctly connected? If the connection is loose or fallen? If the reactor (L) is damaged? Fault diagnos is process: Turn on the unit and wait 1 minute...
- Page 61 (2) IPM Protection, Out-of-step Fault, Compressor Phase Overcurrent (AP1 below refers to the outdoor control panel) Main check points: If the connection between control panel AP1 and compressor COMP is secure? If loose? If the connec- tion is in correct order? If the voltage input of the machine is within normal range? (Use AC voltmeter to measure the voltage between terminal L and N on the wiring board XT) If the compressor coil resistance is normal? If the insulation of compressor coil against the copper tube...
- Page 62 Energize and switch on Use AC voltmeter If the voltage Check the supply to measure the IPM protection between terminal L voltage and voltage between occurs after the and N on wiring terminal L and N machine has run for restore it to board XT is within a period of time?
- Page 63 (3)High temperature and overload prection diagnosis (AP1 here in after refers to the control board of the outdoor unit) Mainly detect: Is out door ambient temperature in normal range? Are the outdoor and indoor fans operating normally? Is the heat dissipation environment inside and outside the unit is good? Overheat and high temperature protection Normal protection, please operate it after the...
- Page 64 (4) Start-up failure(following AP1 for outdoor unit control board) Mainly detect: Whether the compressor wiring is connected correct? Is time for compressor stopping enough? Is compressor broken? Power on the unit Is stop time of the compressor Restart it up after 3 minutes longer than 3 minutes? Does startup fail? Are the wires for the compressor connected...
- Page 65 (5) Out of step diagnosis for the compressor (AP1 here in after refers to the control board of the outdoor unit) Mainly detect: Whether the system pressure is too high? whether the input voltage is too low? Out of step occurs in Out of step occurs once the operation unit is powered on.
- Page 66 (6) Overload and air exhaust malfunction diagnosis (following AP1 for outdoor unit control board) Mainly detect: Wether the PMV is connected well or not? Is PMV damaged? Is refrigerant leaked? 20 minutes after the complete unit is powered o ff Is the terminal FA for the Connect the PMV connected correctly?
- Page 67 (7) Power factor correct or (PFC) fault (a faultofoutdoor unit)(AP1 hereinafter refers to the control board of the outdoor unit) Start Check wiring of the reactor (L) of the outdoor unit and the PFC capacitor Replace it as per the Whether there is any wiring diagram and If the fault is eliminated?
- Page 68 (8) Communication malfunction: (following AP1 for outdoor unit control board) Mainly detect: 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? Is there any damage for the indoor unit mainboard communication circuit? Is communication circuit damaged? The flow chart for malfunction detect: Start Did the equipment operate...
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Page 69: Appendix 1: Resistance Table Of Ambient Temperature Sensor For Indoor And Outdoor Units(15K)
Appendix 1: Resistance Table of Ambient Temperature Sensor for Indoor and Outdoor Units(15K) Temp. Resistance kΩ Temp. Resistance kΩ Temp. Resistance kΩ Temp. Resistance kΩ 138.1 18.75 3.848 1.071 128.6 17.93 3.711 1.039 121.6 17.14 3.579 1.009 16.39 3.454 0.98 108.7 15.68 3.333... -
Page 70: Appendix 2: Resistance Table Of Outdoor And Indoor Tube Temperature Sensors(20K)
Appendix 2: Resistance Table of Outdoor and Indoor Tube Temperature Sensors(20K) Temp. Resistance kΩ Temp. Resistance kΩ Temp. Resistance kΩ Temp. Resistance kΩ 181.4 25.01 5.13 1.427 171.4 23.9 4.948 1.386 162.1 22.85 4.773 1.346 153.3 21.85 4.605 1.307 20.9 4.443 1.269 137.2... -
Page 71: Appendix 3: Resistance Table Of Outdoor Discharge Temperature Sensor(50K)
Appendix 3: Resistance Table of Outdoor Discharge Temperature Sensor(50K) Resistance Temp. Temp. Resistance kΩ Temp. Resistance kΩ Temp. Resistance kΩ kΩ 853.5 18.34 4.754 799.8 93.42 17.65 4.609 89.07 16.99 4.469 703.8 84.95 16.36 4.334 660.8 81.05 15.75 4.204 620.8 77.35 15.17 4.079... - Page 72 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 73 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 74 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 75 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 76 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 77 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 78 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 79 Remove the cross flow blade and motor. Remove the rubber cushion of the bearing. O-Gasket sub-assy of Bearing Ring of Bearing Remove the screws at the joint of the Cross Flow Fan cross flow blade and the motor. Take Fan Motor down the motor.
- Page 80 1. Remove top panel Handle and Twist off the screws used for fixing the handle, pull the handle up ward to remove it Handle Remove the 3 screws connecting the top panel with the front panel and the right side plate, and then remove the top panel.
- Page 81 Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove left side plate and right side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy.
- Page 82 4. Remove fan motor Remove the nuts fixing the blade and then axial flow blade remove the axial flow blade. fan motor fixing frame Remove the 4 tapping screws fixing the motor; disconnect the leading wire insert of the motor and then remove the motor. Remove the 2 tapping screws fixing the motor support and then pull the motor support upwards to remove it.
- Page 83 6.Remove fireproof electric box and soundproof sponge Fireproof electric box Twist off the screws on fireproof electric box and then remove the fireproof electric box. Since the piping ports on the soundproof sponge are torn easily, remove the soundproof sponge carefully. soundproof sponge 7.
- Page 84 8. Remov e 4-way valv e assy Discharge the refrigerant completely;unsolder 4-way valve assy the pipelines connecting the compressor and the condenser assy,and then remove the 4-way valve assy. 9. Remov e compressor compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor.
- Page 85 condenser sub-assy Remove the chassis sub-assy and condenser sub-assy. chassis sub-assy...
- Page 86 Steps Procedure 1. Remove top panel Handle and Twist off the screws used for fi xing the handle, pull the handle upward to remove it. Loosen the screws fixing the valve cover and then remove the valve cover. Handle Remove the 3 screws connecting the top panel with the front panel and the right side Valve cover plate, and then remove the top panel.
- Page 87 Steps Procedure Remove the 5 screws connecting the panel with the chassis and the motor support, and then remove the panel. panel 3. Remove left side plate and right side plate Remove the screws connecting the right side plate with the chassis, the valve support and the electric box, and then remove the right side plate assy.
- Page 88 Steps Procedure 4. Remove fan motor Remove the nuts fixing the blade and then axial flow blade remove the axial flow blade. fan motor fixing frame Remove the 4 tappin g screw s fixing the motor; disconnect the leading wire insert of the motor and then remove the moto r.
- Page 89 Steps Procedure 6.Remove Fireproof electric box and soundproof sponge Fireproof electric box Tw ist of f the screws on fireproof electric box and then r emove the fireproof electric box . Since the piping ports on the soundproof sponge are torn easily , remove the soundproof sponge carefully .
- Page 90 Steps Procedure 8. Remov e 4-w ay valv eassy Discharge the refrigerant completely;unsolder 4-way valve assy the pipelines connecting the compressor and the condenser assy,and then remove the 4-way valve assy. 9. Remov e c ompressor compressor Remove the 3 foot nuts fixing the compressor and then remove the compressor.
- Page 91 Steps Procedure condenser sub-assy Dissemble the chassis sub-assy and condenser sub-assy. chassis sub-assy...
- Page 92 Add: West Jinji Rd, Qianshan, Zhuhai, Guangdong, China, 519070 Tel: (+86-756) 8522218 Fax: (+86-756) 8669426 E-mail: gree@gree.com.cn www.gree.com For continuous improvement in the products, Gree reserves the right to modidy the product specification and appearance in this manual without notice and without incurring any obligations.