Gree GUD24W2/D-D(U) Service Manual
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Gree GUD24W2/D-D(U) Service Manual

Dc inverter heat pump condensing unit service manual
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DC INVERTER HEAT PUMP CONDENSING
UNIT SERVICE MANUAL
(GC202301-I)
Capacity: 24kBtu/h~60kBtu/h
Rate Frequency: 60Hz
Operation Range:
Cooling: 5°F(-15°C)~118.4°F (48°C)
Heating: 5°F(-15°C)~75.2°F (24°C)
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Summary of Contents for Gree GUD24W2/D-D(U)

  • Page 1 DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL (GC202301-I) Capacity: 24kBtu/h~60kBtu/h Rate Frequency: 60Hz Operation Range: Cooling: 5°F(-15°C)~118.4°F (48°C) Heating: 5°F(-15°C)~75.2°F (24°C)
  • Page 2 Foreword Thank you for choosing Gree U-Match air conditioners. In order to correctly install and use our units, and for the satisfactory operation effect, please read this manual carefully. This manual specifies safe operation requirements from perspectives of product introduction, control, troubleshooting and maintenance, as well as basic principles and implementation methods.

  • Page 3: Table Of Contents

    CONTENTS 1 Product Introduction ...................... 3 1.1 Lists of Units .......................... 3 1.2 Electrical Parameters ......................5 2 Control ..........................6 2.1 Operation Mode ........................6 2.2 Control Mode ......................... 7 2.3 Functions ..........................10 3 Troubleshooting ......................14 3.1 Wiring Diagrams ........................14 3.2 PCB Layout ..........................
  • Page 4 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Safety Notice on Maintenance PROHIBITED： (1) Do not pierce or burn. (2) Please note that refrigerant may be odorless. (3) The appliance shall be stored in a room without continuously operating ignition sources (For example: open flames, an operating gas appliance or an operating electric heater).
  • Page 5 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL high speed; Otherwise personal injury may occur. (5) Measure the insulation resistance after maintenance. The resistance must be 1M or higher. Bad insulation may lead to electric shock. (6) Welding and cutting work must be done in a well-ventilated place.

  • Page 6: Product Introduction

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 1 Product Introduction 1.1 Lists of Units 1.1.1 List of Outdoor Units Power Supply Model Finished Product Code Appearance V/Ph/Hz GUD24W2/D-D(U) CF090W2280 GUD30W2/D-D(U) CF090W2300 GUD36W2/D-D(U) CF090W2290 208/230V-1Ph-60Hz GUD42W2/D-D(U) CF090W2310 GUD48W2/D-D(U) CF090W2270...
  • Page 7 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 1.1.2 List of Indoor Units Power Supply Cooling/Heating Finished Model Appearance Capacity (Btu/h) Product Code V/Ph/Hz Airhandler GUD24AH2/D-D(U) 24000/24000 208/230V-1Ph-60Hz EH010N0130 Airhandler GUD30AH2/D-D(U) 30000/30000 208/230V-1Ph-60Hz EH010N0160 Airhandler GUD36AH2/D-D(U) 36000/36000 208/230V-1Ph-60Hz EH010N0140...

  • Page 8: Electrical Parameters

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 1.2 Electrical Parameters Power Supply Circuit Breaker Capacity Model V/Ph/Hz GUD24W2/D-D(U) GUD30W2/D-D(U) GUD36W2/D-D(U) 208/230V-1Ph-60Hz GUD42W2/D-D(U) GUD48W2/D-D(U) GUD60W2/D-D(U) Power Supply Fuse Capacity Circuit Breaker Capacity Model V/Ph/Hz GUD24AH2/D-D(U) GUD30AH2/D-D(U) GUD36AH2/D-D(U) 208/230V-1Ph-60Hz 3.15...

  • Page 9: Control

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2 Control 2.1 Operation Mode 2.1.1 Cooling Mode...

  • Page 10: Control Mode

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2.1.2 Heating Mode 2.2 Control Mode 2.2.1 Based Control 2.2.1.1 Compressor Control When cooling or heating mode is turned on, indoor fan will run for a while before the compressor starts.
  • Page 11 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2.2.1.2 EXV Control When the unit is first started, the electronic expansion valve will reset control. During the process, the expansion valve will produce rattling sound. When cooling or heating mode is turned on, the valve will be open at a certain step before the compressor starts.
  • Page 12 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2.2.3 Protection Control 2.2.3.1 High Pressure Protection Control System will enable high pressure protection control if the high pressure switch is detected open for continuously a little time. Under high pressure protection, system will be shut down and display error code E1.

  • Page 13: Functions

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2.3 Functions 2.3.1 Set Defrost Mode The first dip switch is selecting the defrost mode. The first dip switch is used to change the defrost setting, factory default setting is standard defrost. Under extremely low environment temperature, if the standard defrost cannot have the condenser defrosted completely, please set the second dip switch to be strong defrost.
  • Page 14 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Operating Mode Outdoor Unit Dip Switches Standard mode (Default) Strong mode Energy saving mode Self-adaption mode 2.3.3 Set Indoor Fan Speed Set the indoor fan speed through the eight dip switches of the indoor main control board. The higher level, the higher speed of the indoor unit fan.
  • Page 15 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Capacity GUD24AH2/D-D(U) Indoor Unit Dip Switches GUD30AH2/D-D(U) Indoor Unit Dip Switches Level 7 Level 8 Capacity GUD36AH2/D-D(U) Indoor Unit Dip Switches GUD42AH2/D-D(U) Indoor Unit Dip Switches Level 1 Level 2 Level 3...
  • Page 16 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Capacity GUD48AH2/D-D(U) Indoor Unit Dip Switches GUD60AH2/D-D(U) Indoor Unit Dip Switches Level 1 Level 2 Level 3 Level 4 Level 5 Level 6 (Default) Level 7 Level 8 NOTE: ① After the unit is shut down or stopped at the temperature point, the indoor unit will delay for a few minutes and then shut down.

  • Page 17: Troubleshooting

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2.3.4 Set Indoor unit The third dip switch is selecting the indoor unit. The third dip switch is used to change the indoor unit setting, factory default setting is Air handler.
  • Page 18 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.1.1 Wiring Diagrams of ODUS Model: GUD24W2/D-D(U)
  • Page 19 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD30W2/D-D(U),GUD36W2/D-D(U)
  • Page 20 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD42W2/D-D(U),GUD48W2/D-D(U),GUD60W2/D-D(U)
  • Page 21 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.1.2 Wiring Diagrams of IDUs Model:GUD24AH2/D-D(U),GUD30AH2/D-D(U),GUD36AH2/D-D(U),GUD42AH2/D-D(U),GUD48AH2/D-D(U), GUD60AH2/D-D(U)

  • Page 22: Pcb Layout

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.2 PCB Layout 3.2.1 Interface Indoor Unit: Model: GUD24AH2/D-D(U),GUD30AH2/D-D(U),GUD36AH2/D-D(U), GUD42AH2/D-D(U), GUD48AH2/D-D(U), GUD60AH2/D-D(U) Mainboard: Printing Interface Printing Interface Air outlet temperature Neutral wire input TUBE-0 sensor AC-L Live wire input Heater control signal...
  • Page 23 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Printing Interface Printing Interface Transformer Neutral wire X3(C) output Transformer Live wire X4(R) output Outdoor unit: Mainboard, Drive Board Model: GUD24W2/D-D(U), GUD30W2/D-D(U), GUD36W2/D-D(U)
  • Page 24 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Printing Interface Printing Interface System high pressure protection AC-L Live wire interface 2. Outdoor ambient temperature sensor interface 4. Defrosting temperature sensor Neutral wire T_SENSOR1 interface 6. Discharge temperature sensor interface...
  • Page 25 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD42W2/D-D(U), GUD48W2/D-D(U), GUD60W2/D-D(U) Printing Interface Printing Interface System high pressure protection Neutral wire interface AC-L Live wire EKV1 Electronic expansion valve interface Condenser Medium pipe temperature 4WAY 4-way valve T_LAC...
  • Page 26 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Printing Interface Printing Interface 2. Outdoor ambient temperature sensor interface 4. Defrosting temperature sensor HEAT_ B Chassis electric heating belt T_SENSOR1 interface 6. Discharge temperature sensor interface HEAT_ C Compressor electric heating belt...
  • Page 27 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL (2) Testing Steps Step 1: put the black probe on the place P and the red one on the wiring terminal U, V, W respectively as shown in the following figure to measure the voltage between UP, VP and WP.

  • Page 28: Error Code

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL GUD60W2/D-D(U) 3.3 Error Code Error code Error Compressor high pressure protection Refrigerant lack protection or compressor low pressure protection Compressor air discharge high-temperature protection Overload protection Discharge temperature sensor error Outdoor ambient temperature sensor error...

  • Page 29: Troubleshooting

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Error code Error ODU tube temperature sensor error Compressor overload protection Bus low-voltage protection Bus high-voltage protection ODU AC current protection IPM module current protection DC fan error PFC overcurrent protection...
  • Page 30 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL ■Refrigerant charging amount is too much. ■System pipeline is blocked. Troubleshooting：...
  • Page 31 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.2 “E3” Refrigerant lack protection or compressor low pressure protection Error display: ODU mainboard LED displayer Error judgment condition and method: It is judged through the action of low-pressure switch. If the low-pressure switch is cut off, it is judged that low pressure is too low and the system stops operation for protection.
  • Page 32 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： 3.4.3 “E4” Compressor Air Discharge High-temperature Protection Error display: ODU mainboard LED displayer Error judgment condition and method: Test the compressor discharge temperature through compressor discharge pipe and shell top temperature...
  • Page 33 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Possible reason： ■Cut-off valve of ODU or IDU is not fully opened. ■Electronic expansion valve is abnormal. ■Outdoor or indoor fan is not working properly. ■IDU filter or air duct is blocked (cooling mode).
  • Page 34 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting：...
  • Page 35 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.4 “H4” Overload protection Error display: ODU mainboard LED displayer Error judgment condition and method: When condensing pressure is higher than the protection value, system will report overload protection. Possible reason: ■Cooling ODU heat exchanger is blocked or heat exchange is bad.
  • Page 36 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.5 “F4” Discharge temperature sensor error Error display: ODU mainboard LED displayer Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value, If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously, report the error.
  • Page 37 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.6 “F3” Outdoor Ambient Temperature Sensor Error Error display: ODU mainboard LED displayer Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value, If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously, report the error.
  • Page 38 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.7 “e1” High-Pressure Sensor Error Error display: ODU mainboard LED displayer Sample the AD value of pressure sensor through pressure sensor detecting circuit and judge the range of AD value, If the sampling AD value exceeds upper limit and lower limit in 30 seconds continuously, report the error.
  • Page 39 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL ■Poor contact between pressure sensor and terminal in mainboard interface. ■Pressure sensor is abnormal. ■Detecting circuit is abnormal. Troubleshooting： 3.4.9 “EE” Memory chip reading and writing failure Error display: ODU mainboard LED displayer Error judgment condition and method: If ODU mainboard cannot read the memory chip, this error will be reported.
  • Page 40 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting: Malfunction of ODU memory chip error Replace the outdoor mainboard 3.4.10 “C4” ODU Jumper Cap Error Error display: ODU mainboard LED displayer Error judgment condition and method: If jumper cap model doesn‘t match with mainboard, report the error Possible reason: ■Jumper cap is not installed.
  • Page 41 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.11 “F2” Condenser Temperature Sensor Error Error display: ODU mainboard LED displayer Error judgment condition and method: Sample the AD value of temperature sensor through temperature sensor detecting circuit and judge the range of AD value, If the sampling AD value exceeds upper limit and lower limit in 5 seconds continuously, report the error.
  • Page 42 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Malfunction of condenser temperature sensor Check if the condenser Correctly insert the temperature sensor on temperature sensor mainboard is inserted on the on the needle stand needle stand correctly Disconnect Replace the...
  • Page 43 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： NOTE: Please refer to Appendix 1 for the relation between temperature and resistance of temperature sensor. 3.4.13 “H3” Compressor overload protection Error display: ODU mainboard, IDU wired control and IDU receiver light board will display Error judgment condition and method: When the mainboard’s interface ovc-comp is broken off for 3s, error H3 will be reported.
  • Page 44 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting: H3 compressor overload protection compressor overload protection Connection the over Check if the over comp. interface on the comp. interface mainboard is connection Replace the mainboard 3.4.14 “PL” Bus Low-Voltage Protection...
  • Page 45 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.15 “PH” Bus High-Voltage Protection Error display: ODU mainboard LED displayer Error judgment condition and method: If there is no other malfunction and the busbar voltage is higher than the set value for high voltage protection, then it can be judged that bus high-voltage protection occurs.
  • Page 46 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： 3.4.17 “H5” IPM module current protection Error display: ODU mainboard LED displayer Error judgment condition and method: When power is connected and drive chip received IPM lead F0 that is of low level, than it is IPM module malfunction.
  • Page 47 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： 3.4.18 “H6” DC Fan Error Error display: ODU mainboard LED displayer Error judgment condition and method: Mainboard doesn’t receive the signal of outdoor fan within 30s after the outdoor fan starts up.
  • Page 48 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： Malfunction of discharge temperature sensor Check if the Correctly connect the control wire of outdoor fan motor is control wire of fan motor connected on the outdoor on the mainboard...
  • Page 49 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.19 “HC” PFC overcurrent protection Error display: ODU mainboard LED displayer Error judgment condition and method: After power is connected, and drive chip received PFC lead F0 that is of low level, than it is PFC module malfunction.
  • Page 50 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.20 “Lc” Compressor startup failure Error display: ODU mainboard LED displayer Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If PJ is displayed, it indicates inverter compressor startup failure.
  • Page 51 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.21 “P0” Driver Reset Protection Error display: ODU mainboard LED displayer Error judgment condition and method: Drive board chip resets and starts initialization. After the drive board is energized for 5s, it detects that the chip resets again.
  • Page 52 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL ■Compressor is damaged. Troubleshooting： 3.4.23 “Pc” Driver Current Error Error display: ODU mainboard LED displayer Error judgment condition and method: After power charging, if offset voltage average is detected to exceed 12.5% of 1.65V in 1s, then it can be judged that current detection (or current sensor) circuit is faulted.
  • Page 53 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： Current detection (or current sensor) circuit error Replace the drive board. 3.4.24 “H7” Compressor out-of-step protection Error display: ODU mainboard LED displayer Error judgment condition and method: During operation, it can’t detect the rotor position and stops output. Or the actual running speed differs too much from the set running speed.
  • Page 54 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： 3.4.25 “P7” Module temperature sensor circuit failure Error display: ODU mainboard LED displayer Error judgment condition and method: If IPM or PFC module temperature is lower than the set protection value, then it can be judged that driver module sensor error occurs and system will shut down for protection.
  • Page 55 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： 3.4.26 “ee” Drive Memory Chip Error Error display: ODU mainboard LED displayer Error judgment condition and method: If power is connected but the drive board with memory chip cannot detect the memory chip or read the memory chip data correctly, then it can be judged that drive memory chip error exists.
  • Page 56 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Possible reason: ■Voltage of power grid is abnormal. Voltage is too low. ■Drive board charge loop element is abnormal. ■Drive board busbar voltage sampling circuit element is damaged or drive chip busbar voltage sampling AD terminal is abnormal.
  • Page 57 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting： 3.4.29 “AC” Outdoor fan startup failure Error display: ODU mainboard LED displayer Error judgment condition and method: Check the error code on nixie tube of ODU main control board. If PJ is displayed, it indicates...
  • Page 58 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting：...
  • Page 59 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.30 “UL” Outdoor fan overcurrent protection Error display: ODU mainboard LED displayer Error judgment condition and method: If outdoor fan’s instant current value is higher than the set current protection value, then it can be judged that outdoor fan over-current occurs and system will shut down for protection.
  • Page 60 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.4.31 “AE” Outdoor fan current detection circuit error Error display: ODU mainboard LED displayer Error judgment condition and method: After power charging, if offset voltage average is detected to exceed 12.5% of 1.65V in 1s, then it can be judged that current detection (or current sensor) circuit is faulted.
  • Page 61 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL ■Drive board outdoor fan current sampling circuit element is damaged or drive chip current sampling AD terminal is abnormal. ■Outdoor fan is damaged. Troubleshooting： 3.4.33“C8” ODU Drive jumper cap error Error display: ODU mainboard LED displayer Error judgment condition and method: If jumper cap model doesn‘t match with mainboard, report the error...
  • Page 62 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Troubleshooting：...

  • Page 63: Failures Not Caused By Errors

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 3.5 Failures Not Caused by Errors (1) If your air conditioner fails to function normally, please first check the following items before maintenance: Problem Cause Corrective Measure If you turn off the unit and then immediately turn it on, in order to protect the compressor and avoid Please wait for a while.
  • Page 64 Check the above items and adopt the corresponding corrective measures. If the air conditioner continues to function poorly, please stop the air conditioner immediately and contact Gree’s authorized local service center. Ask our professional service staff to check and repair the unit.

  • Page 65: Maintenance

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4 Maintenance 4.1 System Diagram Model: GUD24W2/D-D(U), GUD30W2/D-D(U), GUD36W2/D-D(U)

  • Page 66: Connection Pipe Vacuum Pumping

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD42W2/D-D(U), GUD48W2/D-D(U), GUD60W2/D-D(U) 4.2 Connection Pipe Vacuum Pumping NOTICE Make sure the outlet of vacuum pump is away from fire source and is well-ventilated. ① Before vacuum pumping, make sure the unit cut-off valves are closed.
  • Page 67 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model Time(min) GUD24W2/D-D(U) GUD30W2/D-D(U) GUD36W2/D-D(U) GUD42W2/D-D(U) GUD48W2/D-D(U) GUD60W2/D-D(U) And verify if the pressure gauge at the low pressure side of the manifold valve assembly reads -0.1Mpa (-750mmHg), if not, it indicates there is leak somewhere. Then, close the switch fully and then stop the vacuum pump.

  • Page 68: Refrigerant Charging

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.3 Refrigerant Charging Pre-charging Step 1: Connect the high pressure gauge line to the valve of liquid pipe and connect the low pressure gauge line to the valve of gas pipe. Connect the middle gauge line to the vacuum pump. Power on the vacuum pump and perform vacuum drying.
  • Page 69 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL the vacuum pump. Power on the vacuum pump and perform vacuum drying. Step 2: After vacuum drying, close the high and low pressure gauge valves. Then remove the middle gauge line from the connector of vacuum pump. Then connect to the refrigerant tank.

  • Page 70: Maintenance Of Major Components

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.4 Maintenance of Major Components 4.4.1 Replacement of thermostat Please refer to the instruction manual of thermostat WK-010WB1. 4.4.2 How to replace the compressor 4.4.2.1 Diagnosis of compressor failure A. On condition that the unit can be started up Step 1: If the unit can be started up, then start it up to check the current of the faulted compressor.
  • Page 71 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Inverter compressor QXFS-B238zX070. Inverter compressor QXFS-D280zX070. Inverter compressor QXAS-F428zX450L. Step 2: Judge whether the operating noise of the compressor is normal, and whether there is a sharp noise or obvious scraping. If there is a normal compressor working nearby, compare their operating noise.
  • Page 72 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Step 3: Examine whether the electronic expansion valve of the outdoor unit is active and whether the 4-way valve works or not. How to examine: (1) Electronic expansion valve: The electronic expansion valve will be reset every time when the unit is powered on or off. Touch the valve and you can feel the movement of the valve spool.
  • Page 73 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL This is the position of the 4-way valve. Do not touch it directly with your hands. There is hot refrigerant at the exhaust pipe, D- Connect to the exhaust side Caution! High temperature! Labels on the 4-way valve: D-connect to the exhaust side;...
  • Page 74 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Step 4: Check the drive board of compressor, i.e. the IPM module. Please refer to the IPM checking method in the section of troubleshooting. Check the drive board of compressor, i.e. the IPM module.
  • Page 75 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.4.2.2 Replacement of compressor Step 1: Preparation (1) Prepare the components for replacement When carrying the old and new compressors, do not place the compressors horizontally or upside down. The angle of inclination should be within ±30°. Make sure the lubricant inside the compressors will not flow from the oil balance mouth.
  • Page 76 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL NOTICE: Make sure the lubricant is sealed inside the compressors. (2) Prepare relevant tools 1) Prepare nitrogen. Please strictly follow the nitrogen welding standards during the welding process. Make sure there is sufficient nitrogen. The nitrogen pressure should be above 2.0MPa.
  • Page 77 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Step 5: Detach the compressor . Check the condition of the damaged compressor, including its position and model. If the information of the compressor is confirmed, check the oil quality. (a) If the oil is clear and impurities-free, we consider that the oil of the system is not polluted. Meanwhile, if we confirm that the valves and pipes are also normal, then we can replace the compressor only.
  • Page 78 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 1. Remove the screw bolt of the separator. 3. Remove the separator. 2. Remove the screw bolt of the separator. When the separator is detached, check whether there are impurities inside. Below is the checking method: NOTE: When pouring the liquid from the separator, make sure the discharge pipe is at the lower position.Slant at an...
  • Page 79 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL After confirming which parts of the system should be replaced, check the pipeline of the system. Blow through the main pipeline with nitrogen. After clearing the pipeline, if the components are not replaced immediately, seal the pipeline with adhesive tape to prevent the system from being contaminated by water and impurities in the air.
  • Page 80 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.4.3 How to replace the drive module of compressor Step 1: First, make sure that power is cut off. Set the universal meter at the AC voltage and measure the voltage between L1, L2, L3, and N. If each time the voltage is 0V (Errors may occur to the universal meter, sometimes the voltage may not be 0V), proceed with the next step and put a sign on the power switch that reads “Under maintenance, don’t switch on”.
  • Page 81 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Step 4: Remove the screws on the drive board of the compressor. The screws are located in the white circles as shown above in the picture. Step 5: Replace with a new compressor drive board. Before replacement, apply some silica gel on the IPM module.

  • Page 82: Removal Of Major Components

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.5 Removal of Major Components 4.5.1 Removal of ODU Major Components Picture Name Function Through compression, the low pressure refrigerant occupies a less space. Compressor As its pressure and temperature both rise, it becomes high pressure and high temperature refrigerant.
  • Page 83 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Picture Name Function Electronic It is used to lower the pressure and temperature of liquefied refrigerant and expansion valve adjust the flow of refrigerant entering the evaporator. Electromagnetic Electromagnetic valve controls increased enthalpy switch.
  • Page 84 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD24W2/D-D(U), GUD30W2/D-D(U), GUD36W2/D-D(U) Removal of Front Panel NOTE: Before removing the front panel, make sure power is cut off. Step Picture Work Instruction Unscrew the screws of the  1. Remove the upper cover upper cover plate with a plate.
  • Page 85 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Front Panel NOTE: Before removing the front panel, make sure power is cut off. Step Picture Work Instruction Unscrew the screws that  connect the handle to the 4. Remove the handle and the electric box, and unscrew valve cover.
  • Page 86 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Front Panel NOTE: Before removing the front panel, make sure power is cut off. Step Picture Work Instruction Install the valve cover by  7. Install the handle and the mounting on 3 clasps on its valve cover.
  • Page 87 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Front Panel NOTE: Before removing the front panel, make sure power is cut off. Step Picture Work Instruction Tighten up the screws  10. Install the upper cover plate.
  • Page 88 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Compressor NOTE: Before removing the compressor, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction 3. Loosen the Use a wrench to twist off ...
  • Page 89 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Compressor NOTE: Before removing the compressor, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Weld the connection pipes ...
  • Page 90 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD42W2/D-D(U), GUD48W2/D-D(U), GUD60W2/D-D(U) Removal of Compressor/Gas Liquid Separator NOTE: Before removing the compressor/gas liquid separator, make sure there is no refrigerant in the pipeline and power is cut off. Step...
  • Page 91 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Compressor/Gas Liquid Separator NOTE: Before removing the compressor/gas liquid separator, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Take away the ...
  • Page 92 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Compressor/Gas Liquid Separator NOTE: Before removing the compressor/gas liquid separator, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction 7. Install the new...
  • Page 93 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Compressor/Gas Liquid Separator NOTE: Before removing the compressor/gas liquid separator, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Connect the ...
  • Page 94 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of 4-Way Valve NOTE: Before removing the 4-way valve, make sure refrigerant is fully discharged from the unit and power is cut off. Step Picture Work Instruction Replace the 4-way valve ...
  • Page 95 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model:GUD24W2/D-D(U), GUD30W2/D-D(U), GUD36W2/D-D(U) Removal of Fan and Motor NOTE: Before removing the fan, make sure power is cut off. Step Picture Work Instruction Use a screwdriver to  unscrew the two screws 1.
  • Page 96 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Fan and Motor NOTE: Before removing the fan, make sure power is cut off. Step Picture Work Instruction Replace with a new  4. Install the motor. motor. Then tighten up the screw bolt.
  • Page 97 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD24W2/D-D(U), GUD30W2/D-D(U), GUD36W2/D-D(U) Removal of Condenser NOTE:Before removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Remove the upper, lower ...
  • Page 98 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser NOTE:Before removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction When removing the motor  3. Remove motor support.
  • Page 99 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser NOTE:Before removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Loosen the securing screws  of condenser support. Take 5.
  • Page 100 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser NOTE:Before removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Install the condenser by  referring to the positions of entering and leaving pipes.
  • Page 101 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser NOTE:Before removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Check whether each  component and connection 9.
  • Page 102 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser Removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Loosen the wire clamp at  the bottom of the electric box.
  • Page 103 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser Removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Heat up the welding  points of connection...
  • Page 104 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser Removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Secure the screws of  6. Install the new condenser and support.
  • Page 105 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Condenser Removing the condenser, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Put the electric box in  8. Secure the electric...
  • Page 106 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Model: GUD24W2/D-D(U), GUD30W2/D-D(U), GUD36W2/D-D(U) Removal of Electronic Expansion Valve Removing the electronic expansion valve, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Remove the upper, lower and ...
  • Page 107 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Electronic Expansion Valve Removing the electronic expansion valve, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction Take off the coil of electronic ...
  • Page 108 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Removal of Electronic Expansion Valve Removing the electronic expansion valve, make sure there is no refrigerant in the pipeline and power is cut off. Step Picture Work Instruction 6. Secure the Put the electric box back in ...
  • Page 109 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.5.2 Removal of IDU Major Components 4.5.2.1 Air handler Unit Disassembly and Assembly of the Electric Box Step Picture Work Instruction Loosen screws around the upper  panel with a screwdriver.
  • Page 110 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Disassembly and Assembly of the Electric Box Step Picture Work Instruction Disconnect the power cord and control  line from the wiring terminals, and then draw them out. 3. Remove the electric box.
  • Page 111 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Disassembly and Assembly of the Electric Box Step Picture Work Instruction Place the electric box at the proper  position. Tighten screws around the electric box  6. Reinstall the electric box.
  • Page 112 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Disassembly and Assembly of the Fan Motor Step Picture Work Instruction Loosen screws fixing the motor and  fan blades. 3. Remove the motor. Loosen screw bolts fixing the bracket. ...
  • Page 113 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Disassembly and Assembly of the Evaporator and Drain Pan Step Picture Work instruction  Loosen screws round the lower panel 2. Remove the lower panel with a screwdriver. (1) and panel (2).
  • Page 114 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Disassembly and Assembly of the Evaporator and Drain Pan Step Picture Work instruction 5. Remove the primary Remove the primary drain pan from  drain pan. the unit. 6. Remove the secondary Remove the secondary drain pan from ...
  • Page 115 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Disassembly and Assembly of the Filter Step Picture Work instruction Loosen screws fixing the mounting  1. Remove the mounting plate with a screwdriver. plate. Remove the mounting plate away ...

  • Page 116: Explosive View And Lists Of Parts

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.6 Explosive View and Lists of Parts 4.6.1 ODU Explosive View and Lists of Parts GUD24W2/D-D(U) (Product Code: CF090W2280 ) Material Name Finished Product Code Front Grill 01600406001701 Left Side Plate...
  • Page 117 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Pressure Sensor 43004406002201 Electronic Expansion Valve 072009060006 Electric Expand Valve Fitting 07200206002311 Right Side Plate 01205606038704P01 Terminal Board 42000100000102 Terminal Board 422000060106 Handle 01221006000701P01 Main Board...
  • Page 118 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished product Code Top Cover Sub-Assy 000051060178 Left Side Plate 012055060389P01 Condenser Assy 011002061989 4-way Valve 4300008201 Brushless DC Motor 15010400000102 Axial Flow Fan 103002060027 Front Grill 01600406001801 Cabinet...
  • Page 119 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL GUD36W2/D-D(U) (Product Code: CF090W2290 ) Material Name Finished Product Code Top Cover 012049060137P01 Condenser Assy 011002062004 Left Side Plate 012055060389P01 Brushless DC Motor 15010400000102 Electric Expand Valve Fitting 07200206002311 Pressure Protect Switch...
  • Page 120 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Compressor and Fittings 009001060690 Chassis Sub-Assy 01700006071108P01 Compressor Gasket 009012000025 4-Way Valve 4300008201 Drainage Joint 26113009 Silencer 1 07243050 Pressure Sensor 43004406002201 Electric Box Assy 100002074485...
  • Page 121 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Top Cover Sub-Assy 000051060177 Left Side Plate 012055060419P02 Handle 2623305302 4 Way Valve Coil 07201006000604 Electrical Heater 7651873267 Temperature Sensor 390000598 Temperature Sensor 390002060140 Drainage Hole Cap...
  • Page 122 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL GUD48W2/D-D(U) (Product Code: CF090W2270 ) Material Name Finished Product Code Top Cover Sub-Assy 000051060177 Electric Box Assy 100002075617 Main Board 300027062499 Filter Board 300020060121 Terminal Board 42200006001201 Terminal Board 422000060106 Handle...
  • Page 123 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Fusible Plug 035222000004 Front Grill 01600406001501 Pressure Protect Switch 46020007 Pressure Protect Switch 46020006 Silencer 07245007 Strainer 035021060018 Gas-Liquid Separator 03502706001901 One Way Valve 071001060012 Pressure Sensor...
  • Page 124 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL GUD60W2/D-D(U) (Product Code: CF090W2410 ) Material Name Finished Product Code Top Cover Sub-Assy 000051060194 Electric Box Assy 100002075926 Main Board 300027062499 Filter Board 300020060121 Terminal Board 42200006001201 Terminal Board 422000060106 Handle...
  • Page 125 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Pressure Protect Switch 46020006 Pressure Protect Switch 46020007 Strainer 035021060018 Electronic Expansion Valve 43005017 Pressure Sensor 430044060022 One Way Valve 071001060012 Gas-Liquid Separator 035027060022 Condenser Assy...
  • Page 126 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 4.6.2 IDU Explosive View and Lists of Parts GUD24AH2/D-D(U) (Product Code: EH010N0130),GUD30AH2/D-D(U) (Product Code: EH010N0160) Material Name Finished Product Code Top Cover 012049060156P01 Centrifugal Fan Assy 000052060494 Centrifugal Fan Housing 1570220101...
  • Page 127 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Top Cover Board Sub-Assy 017011060189 Bottom Cover Plate Assy 01214706020601P Bottom Cover Plate Assy 01214706020701 Water Tray Assy 000069060536 Right Side Plate Sub-Assy 000130060139 Thermal Expansion Valve...
  • Page 128 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Top Cover Sub-Assy 000051060176 Rear Side Plate 017051060179P Left Side Plate Sub-Assy 017037060292 Centrifugal Fan Housing 1570220201 Brushless DC Motor 15010400001401 Right Side Plate Sub-Assy 000130060140...
  • Page 129 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL GUD48AH2/D-D(U) (Product Code: EH010N0120) Material Name Finished Product Code Top Cover Sub-Assy 017069060119P Electric Box Assy 100002074399 Transformer 43110286 Main Board 300002062756 Terminal Board 4201025503 Centrifugal Fan Assy 000052060413 Left Side Plate Sub-Assy...
  • Page 130 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Water Tray Assy 000069060537 Strainer 0721200102 Thermal Expansion Valve 071017060028 Water Tray 2690220501 Choke Plug 76718209 Water Tray 2690220601 Filter Sub-Assy 111001060188 Evaporator Assy 011001062264 Rear Side Plate Sub-Assy...
  • Page 131 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL GUD60AH2/D-D(U) (Product Code: EH010N0170) Material Name Finished Product Code Cover Plate Sub-Assy 011657060272 Centrifugal Fan Assy 000052060413 Temperature Sensor 39000286 Brushless DC Motor 15010400001301 Motor for Centrifugal Fan 1570220301 Left Side Plate Sub-Assy...
  • Page 132 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Material Name Finished Product Code Terminal Board 4201025503 Main Board 300002062756 Terminal Board 42011103 Top Cover Board Sub-Assy 017011060231 Filter Sub-Assy 111001060188 Bottom Cover Plate Assy 1 017010060088P Lower cover plate Sub-Assy 2...

  • Page 133: Appendices

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Appendices 1 Resistance/Temperature Lists of Temperature Sensors 1.1 Voltage List of 15 KΩ Temperature Sensors (including ODU temperature sensors) Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 0.311...
  • Page 134 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 21.51 1.356 0.802 3.133 20.54 1.393 0.779 3.137 19.63 1.429 0.758 3.141 18.75 1.467 0.737 3.145 17.93 1.503 0.717 3.15...

  • Page 135: Voltage List Of 20 Kω Pipeline Temperature Sensors

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 3.217 2.717 0.248 3.246 3.105 2.734 0.243 3.247 2.998 2.75 0.237 3.249 2.898 2.766 0.232 3.25 2.797 2.781 0.227 3.251...
  • Page 136 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 56.19 0.866 1.386 3.086 53.46 0.898 1.346 3.092 50.87 0.931 1.307 3.098 48.42 0.965 1.269 3.103 46.11 0.998 1.233 3.108...

  • Page 137: Voltage List Of 50 Kω Discharge Temperature Sensors

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 7.453 2.404 0.4088 3.234 7.173 2.429 0.3992 3.235 6.905 2.453 0.3899 3.237 6.648 2.477 0.3808 3.238 6.403 0.3719 3.24 6.167...
  • Page 138 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 232.67 0.136 5.3903 2.144 220.5 0.143 5.2223 2.168 209.05 0.151 5.0605 2.191 195.97 0.158 4.9044 2.214 188.12 0.167 4.7541 2.237...
  • Page 139 GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL Temperature (℃) Resistance (kΩ) Voltage (V) Temperature (℃) Resistance (kΩ) Voltage (V) 27.227 0.886 1.485 2.873 26.147 0.913 1.449 2.882 25.114 0.94 1.4141 2.891 24.128 0.967 1.3803 23.186 0.994 1.3474 2.908 22.286...

  • Page 140: Temperature/Pressure List Of Refrigerant

    GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL 2 Temperature/Pressure List of Refrigerant R410A Temperature Pressure Temperature Pressure Temperature Pressure ℃ ℃ ℃ 1880 1910 1960 2030 2080 2130 2180 2240 1020 2290 1050 2350 1090 2410 1110 2460...
  • Page 141 JF00305154...

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Gud30w2/d-d(u)Gud36w2/d-d(u)Gud42w2/d-d(u)Gud48w2/d-d(u)Gud60w2/d-d(u)Gud24ah2/d-d(u) ... Show all

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