Gree GC202405-I Service Manual
Gree GC202405-I Service Manual

Gree GC202405-I Service Manual

Air source heat pump water heater, capacity: 2.3kw, rated frequency: 50hz, operation range: -7 c- 45 c
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AIR SOURCE HEAT PUMP WATER
HEATER
(GC202405-I)
Capacity: 2.3kW
Rated Frequency: 50Hz
Operation Range : -7 ℃ ~45 ℃

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Summary of Contents for Gree GC202405-I

  • Page 1 AIR SOURCE HEAT PUMP WATER HEATER (GC202405-I) Capacity: 2.3kW Rated Frequency: 50Hz Operation Range : -7 ℃ ~45 ℃...
  • Page 2: Table Of Contents

    Contents PRODUCT ........................... 5 1 MODELS LIST ........................5 2 NOMENCLATURE ......................5 3 INTRODUCTIONS TO COMPONENTS ................6 4 PRODUCT PARAMETERS ....................6 4.1 Product Specifications ........................6 NOTES: ............................6 4.2 Product Performance Curves .....................7 5 WORKING PRINCIPLE AND FEATURES OF PRODUCT ..........7 6 OPTIONAL ACCESSORIES ....................
  • Page 3 3.1 Safety Notices for Installation, Maintenance and Relocation of Unit ........26 3.2 Unit Installation Diagram ......................26 3.3 Structural Dimension ........................27 3.4 Requirements of Installation Dimension .................. 27 3.5 Installation Requirements ......................27 3.6 Installation Requirements of Water System Pipeline .............. 28 3.7 Electrical Installation ........................
  • Page 4 2.24 Ad-Inverter Fan Less Phase Protection .................52 2.25 AE- Inverter Fan Driver Current Detecting Circuit Error ............53 2.26 AL-Inverter Fan Driver DC Bus Low-Voltage Protection or Voltage Drop Error ....53 2.27 AJ-Inverter fan Out-of-Step Protection .................. 54 2.28 AH-Inverter Fan Driver DC Bus High-Voltage Protection ............54 2.29 A1-Drive IPM Module Protection for Inverter Fan ..............55 2.30 A6-Master Controller and Inverter Fan Driver Communication Error ........56 2.31 UL-Inverter Fan Overcurrent Protection ................
  • Page 5: Product

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL PRODUCT 1 MODELS LIST Product Product Heating Model Outline diagram type Code capacity 2300W+2000W GRS-2.3Pd/TD200ANpH-K ER02100240 (electrical heater) Integral type 2300W+2000W (electrical GRS-2.3Pd/TD270ANpH-K ER02100230 heater) 2 NOMENCLATURE □ □ □ □...
  • Page 6: Introductions To Components

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3 INTRODUCTIONS TO COMPONENTS Name Function Increases pressure for the refrigerant and provides driving force for circular flow Compressor of the refrigerant as a main driving component. Reverses flow direction of the refrigerant when the system switches between the Four-way valve normal heat up mode and defrosting mode.
  • Page 7: Product Performance Curves

    NOTES: The above curve data are fitted based on the test parameters of Gree Laboratory(The test conditions are: initial water temperature: 10 ℃ , power supply: 230V ~ 50Hz; in a new unit with clean heat exchangers).
  • Page 8: Optional Accessories

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL makes hot water, the 4-way valve is powered off(D and C are connected, S and E are connected), the high-temperature and high-pressure refrigerant comes out of the compressor, enters the water tank heat...
  • Page 9: Control

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL CONTROL 1 UNIT CONTROL 1.1 Overall Product Control Ideas 1.2 Control and Protection (1) Temperature sensors Top water tank temperature sensor, of which the resistance is 50K, used to detect the upper temperature of the water tank.
  • Page 10: Wired Controller

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL start. When the discharge temperature is less than 90 ℃ , the system automatically resumes operation. If the above phenomenon is detected for three times within 60 minutes, the system cannot resume operation, and the high discharge protection fault code is displayed on the wire controller.
  • Page 11: Operating Modes

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Symbols Instructions BOOST function icon Temperature area Operating status of compressor Operating status of auxiliary electric heating Defrosting status Hot water amount WiFi status Child lock Ventilation Holiday Sunflower Sterilization Timer area...
  • Page 12: Instruction For Operation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL pressing and holding “ ”+ “ ” button for 5 second, the parameter display area blinks. 00 is displayed by default. The “▲” and “▼” buttons can be pressed to switch the query item.
  • Page 13: Timer Setting

    ” button can adjust the minute. (3) After connecting “Gree+” App, the system time will be subject to the time of “Gree+” App, and the system time cannot be set. (4) After setting the “Timer ON/OFF”, the system time and timer on time, timer off time are displayed by polling.
  • Page 14: Weekly Timer Setting

    Press “ ” or “ ” button can adjust the time. After connecting “Gree+” App, the system time will be subject to the time of “Gree+” App, and the system time cannot be set. (4) Press “...
  • Page 15: Setting Of Functions

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (5) Press “ ” button again, “ ” and “2” and “OFF” icons are constantly on, “d:XX” is flashing, press “ ” or “ ” button can adjust the weekly timer OFF time.
  • Page 16 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Fig.4.5-1 Display of sterilization cycle Fig.4.5-2 Display of sterilization start time Notes: ① Sterilization cycle: The setting value means the sterilization will be conducted how many days once. ② When the sterilization cycle is set as 0, it will conduct sterilization immediately and shield the setting of start time.
  • Page 17: Wifi Function Setting

    4.6 WiFi Function Setting You can use “Gree+” App to control it, please scan the QR code in the home page to download it. Only common functions of WiFi wired controller can be set through App: ON/OFF, Boost mode, set temperature, timer ON/OFF, holiday, sterilization, and can view the information of power consumption, heat production and COP.
  • Page 18 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (4) Press “ ” or “ ” button can adjust the value of special parameters; (5) Press “ ” button to select special parameters value. (6) Press“ ” or “ ” buttons to adjust the parameter option “01” or “00” of special parameter value.
  • Page 19: Reset To Ex-Factory Setting

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL set by installing and debugging personnel, please do not alter by yourself, otherwise it may cause malfunction of unit. 4.8 Reset to Ex-Factory Setting If the functions of unit cannot work well due to ex-factory setting is altered by misoperation, user can reset to ex-factory setting via wired controller.
  • Page 20: Installation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL INSTALLATION 1 INSTALLATION FLOWCHART Fig.1-1 Flowchart for installing the unit...
  • Page 21: Preparations

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2 PREPARATIONS 2.1 Precautions for Engineering Installation 2.1.1 Safety Requirement WARNING! The R290 Refrigerant To realize the function of the unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R290, which is specially cleaned.
  • Page 22 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL WARNING Building Codes of Australia. Local Occupational Health and Safety (OH&S) Regulations. This appliance may deliver water at high temperature. Refer to the Plumbing Code of Australia (PCA), local requirements and installation instructions to determine if additional delivery temperature control is required.
  • Page 23: Before Installation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Installation Problem Adverse Effect No filter is installed for the cool water inlet started for the unit. Alternatively, the water flow rate is too low for pipe. daily use. The unit is installed at a position with poor When the ambient temperature is high, high-voltage protection ventilation.
  • Page 24: Design Drawing Review

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL When unpacking ensures the following items are included: Main Unit The Main unit including the heat pump and storage tank (integral). PTR valve Pressure-relief device (May be pre-fitted) Condensation Tube Used for draining condensation from the unit Owner’s manual...
  • Page 25 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (4) When environmental-friendly materials are required by the user, all materials shall meet national environment-protection requirements and relevant certificates must be provided. 2.4.2 Requirements on Installation Material Selection 2.4.2.1 Water Pipe Selection...
  • Page 26: Installation Of Product

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL standards and meet the unit’s requirement on current-carrying capacity. 3 INSTALLATION OF PRODUCT 3.1 Safety Notices for Installation, Maintenance and Relocation of Unit Please read the instructions for use, installation and maintenance carefully before use.
  • Page 27: Structural Dimension

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.3 Structural Dimension Unit: mm Model GRS-2.3Pd/TD200ANpB-K GRS-2.3Pd/TD270ANpB-K Parameter 1643 1924 1235 1177 1458 3.4 Requirements of Installation Dimension Unit: mm 3.5 Installation Requirements (1) Ensure that the sound and airflow of the unit will not affect people, animals, or plants, etc.
  • Page 28: Installation Requirements Of Water System Pipeline

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (3) The unit should be installed in a place with a solid foundation and make sure that the unit is installed upright. The impact of strong wind, typhoon and earthquake or other natural disasters should be fully considered, and the installation should be reinforced.
  • Page 29: Electrical Installation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (6) The connecting parts of the water pipe must be sealed with tape to prevent water leakage. (7) All water system pipelines, valves and pipe joints, etc. must be insulated. It is recommended that the thickness of the insulation pipe is not less than 15mm.
  • Page 30: Wiring Diagram

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL WARNING! The appliance shall be installed in accordance with national wiring regulations, and installation of the unit must be done by qualified personnel. The power supply must comply with the specifications on the nameplate. The carrying capacity of the power supply, wires and sockets should be confirmed before installation.
  • Page 31: Wired Controller Installation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (1) After completing wiring connection, the power cord and communication wires must be tightly pressed with a fixed wire clamp. The fixed wire clamp should be pressed on the outer sheath of the connection wire.
  • Page 32: Installation Of Wired Controller

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.8.2 Installation of Wired Controller 3.8.2.1 Instruction of Interface Table 3.8-2 Instruction of Interface Interface Type 485 communication interface (nonpolar) Parameter 24V DC input 3.8.2.2 Requirement for Installation Location (1) Please do not install the wired controller in the position where is likely to be spattered with water.
  • Page 33 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (3) Stick the soleplate of wired controller on the wall, use screw M4×25 to fix the soleplate into the installing hole of wall. (4) Connect the 2–core STP wire to the two wiring terminals respectively in the back of wired controller, and screw up the screws.
  • Page 34: Commissioning Operation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 4 COMMISSIONING OPERATION WARNING! Safety measures must be taken for operation. All personnel involved in commissioning and maintenance must master the safety regulations of construction and implement them in strict accordance with the regulations.
  • Page 35: Common Phenomena

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Checklist for Commissioning of Air Source Heat Pump Water Heater Check Item Pass The heat exchange space for unit installation meets the related requirement. A drainage ditch or outlet is available near the installation position to facilitate water drainage.
  • Page 36 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Phenomenon Cause in summer, it is recommended to heat water in advance or keep the unit on all day for use. The ambient temperature is low and frosting is a normal operation process. The unit will The unit is frosting.
  • Page 37: Repair

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL REPAIR 1 ERROR CODE Table 1-1 Common Error Information Error code Error name Error code Error name System high-pressure protection Gas discharge temperature sensor error System less refrigerant protection/ Suction temperature sensor error...
  • Page 38: Troubleshooting

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Error code Error name Error code Error name Inverter compressor driver module Inverter outdoor fan driver AC input reset zero-sequence overcurrent protection Inverter compressor overcurrent Inverter outdoor fan driver storage chip error...
  • Page 39: E3-Refrigerant-Lacking Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Troubleshooting: 2.3 E3-Refrigerant-lacking Protection Possible cause: (1) Refrigerant leakage of the unit; (2) Insufficient refrigerant of the unit Troubleshooting: 2.4 E4-High Discharge Temperature Protection Possible cause: (1) Discharge Temperature Sensor Error;...
  • Page 40: F3, F4, F6, Fd, Fe, Fl-Temperature Sensor Error

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Troubleshooting: 2.5 F3, F4, F6, Fd, FE, FL-Temperature Sensor Error Possible cause: (1) Incorrect connection of temperature sensor; (2) Temperature sensor error; (3) Mainboard or drive board error. Troubleshooting: 2.6 U7-Abnormal Reversing of 4-Way Valve Possible cause: (1) The temperature sensors of the water tank are normal;...
  • Page 41: H5-Inverter Compressor Driver Ipm Module Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Troubleshooting: 2.7 H5-Inverter Compressor Driver IPM Module Protection Possible cause: (1) Compressor 3-phase wire connection is lack of phase or phase-reversed; (2) System is overloaded and compressor current is too large;...
  • Page 42: H7-Inverter Compressor Out-Of-Step Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.8 H7-Inverter Compressor Out-of-Step Protection Possible cause: (1) Compressor 3-phase wire connection is lack of phase or phased-reversed; (2) Compressor phase wire connection is bad; (3) System is blocked, short of refrigerant or compressor oil;...
  • Page 43: Hc-Inverter Compressor Driver Pfc Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.9 HC-Inverter Compressor Driver PFC Protection Possible cause: (1) Power grid voltage is abnormal; (2) Drive board PFC module is damaged; (3) Drive board IPM module’s 15V power supply is lower than 13.5V;...
  • Page 44: Ld-Inverter Compressor Default Phase Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Troubleshooting : 2.11 Ld-Inverter Compressor Default Phase Protection Possible cause: (1) Compressor 3-phase wire connection is lack of phase or phase-reversed; (2) Drive board is damaged; (3) Compressor is damaged.
  • Page 45: P0-Inverter Compressor Driver Module Reset

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.12 P0-Inverter Compressor Driver Module Reset Possible cause: (1) 3.3V drive chip supply voltage drop; (2) TRST lead of JTAG programming is interrupted. Troubleshooting :...
  • Page 46: P5-Inverter Compressor Overcurrent Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.13 P5-Inverter Compressor Overcurrent Protection Possible cause: (1) System load is too much and compressor current is too large; (2) Compressor phase wire is loose or has bad contact; (3) Drive board current sampling circuit element is damaged or drive chip current sampling AD terminal is abnormal;...
  • Page 47: P7-Inverter Compressor Driver Module Temperature Sensor Error

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (2) The switch power of drive board is abnormal, therefore, the 3.3V power voltage is abnormal; (3) Communication circuit of the drive board or the master control board is abnormal. (4) Troubleshooting:...
  • Page 48: P8-Inverter Compressor Driver Module High-Temperature Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.16 P8-Inverter Compressor Driver Module High-Temperature Protection Possible cause: (1) Thermal grease is not applied or not evenly applied to the module, or there is other substance on the back of the module;...
  • Page 49: Pa-Inverter Compressor Driver Ac Protection (Input Side)

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.17 PA-Inverter Compressor Driver AC Protection (Input Side) Possible cause: (1) System is heavy-loaded and compressor current is too large; (2) Grid voltage is abnormal; (3) PFC module is damaged; (4) Drive board PFC current sampling circuit element is damaged or drive chip PFC current sampling AD terminal is abnormal.
  • Page 50: Inverter Compressor Driver Dc Bus Low Voltage Protection Or Voltage Drop Error

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.19 PL-Inverter Compressor Driver DC Bus Low Voltage Protection or Voltage Drop Error Possible cause: (1) Voltage of power grid is abnormal; (2) Drive board busbar voltage sampling circuit element is damaged or drive board busbar voltage sampling AD terminal is abnormal.
  • Page 51: Ee-Inverter Compressor Driver Storage Chip Error

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (2) Drive board charge loop element is abnormal; (3) Drive board busbar voltage sampling circuit element is damaged or drive chip busbar voltage sampling AD terminal is abnormal. Troubleshooting : 2.22 ee-Inverter Compressor Driver Storage Chip Error Possible cause: (1) The drive board that needs memory chip is not installed with the memory chip;...
  • Page 52: Ac-Inverter Fan Startup Failure

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.23 AC-Inverter Fan Startup Failure Possible cause: (1) Poor contact of fan wires; (2) The fan blade is stuck by foreign matters or damage; (3) Drive board is broken. (4) The fan is broken.
  • Page 53: Ae- Inverter Fan Driver Current Detecting Circuit Error

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (3) The fan motor is damaged. 2.25 AE- Inverter Fan Driver Current Detecting Circuit Error Possible cause: (1) Drive board is damaged. 2.26 AL-Inverter Fan Driver DC Bus Low-Voltage Protection or...
  • Page 54: Aj-Inverter Fan Out-Of-Step Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Troubleshooting : 2.27 AJ-Inverter fan Out-of-Step Protection Possible cause: (1) The fan motor 3-phase wire connection is lack of phase or phased-reversed; (2) The fan motor phase wire connection is bad;...
  • Page 55: A1-Drive Ipm Module Protection For Inverter Fan

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (1) Voltage of power grid is abnormal; (2) The drive board is damaged. Troubleshooting : 2.29 A1-Drive IPM Module Protection for Inverter Fan Possible cause: (1) The fan motor 3-phase wire connection is lack of phase or phase-reversed;...
  • Page 56: A6-Master Controller And Inverter Fan Driver Communication Error

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.30 A6-Master Controller and Inverter Fan Driver Communication Error Possible cause: (1) Communication wire between master control and driver is not well connected, or has bad contact, or is broken; (2) The switch power of drive board is abnormal;...
  • Page 57: Ul-Inverter Fan Overcurrent Protection

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2.31 UL-Inverter Fan Overcurrent Protection Possible cause: (1) System load is too much and the fan current is too large; (2) The fan motor phase wire is loose or has bad contact;...
  • Page 58: Repair Of Key Components

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3 REPAIR OF KEY COMPONENTS 3.1 Introduction of Parts 3.2 Introduction of Key Components ● Driven by the electric energy, the compressor compresses refrigerant to high-temperature and high-pressure gas and enables the gas to flow circularly in the refrigerant.
  • Page 59 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.3.1 Disassembly of Main Unit Disassembly of main unit Process Schematic Diagram Operation Instruction 1. Disconnect power ● Twist off the screws in the top cover supply and then used for fixing the face cover and then remove the face cover remove it.
  • Page 60 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.3.2 Disassembly & Assembly of Key Components of Unit (1) Disassembly & Assembly of Compressor Disassembly and Assembly of Compressor Step Schematic Diagram Operation instructions ●Disconnect power supply; ●Remove the compressor wires from the 1.
  • Page 61 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Disassembly and Assembly of 4-Way Valve Step Schematic Diagram Operation instructions ●Mark the direction of 4-way valve before unsoldering; ●Remove the coil and mark its direction; ●Wrap the 4-way valve with a wet cloth 1.
  • Page 62 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (4) Disassembly & Assembly of Blade and Motor Disassembly and Assembly of Blade and Motor Remark: Before removing the motor, please make sure that the unit is disconnected with the power.
  • Page 63: Thermostat Reset Operation

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Close the cold water inlet valve & open a hot water tap. Open the drainage pipe valve, and wait for discharging the water. Remove the power wire if required. Remove the top cover and external cover if required.
  • Page 64 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.5.3.1 Work Procedure Work shall be undertaken under a controlled procedure so as to minimise the risk of a flammable gas or vapour being present while the work is being performed.
  • Page 65 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.5.3.5 No Ignition Sources No person carrying out work in relation to a refrigeration system which involves exposing any pipe work shall use any sources of ignition in such a manner that it may lead to the risk of fire or explosion. All...
  • Page 66 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL (3) That there is continuity of earth bonding. 3.5.3.9 Repairs to Sealed Components During repairs to sealed components, all electrical supplies shall be disconnected from the equipment being worked upon prior to any removal of sealed covers, etc. If it is absolutely necessary to have an electrical supply to equipment during servicing, then a permanently operating form of leak detection shall be located at the most critical point to warn of a potentially hazardous situation.
  • Page 67 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Leak detection fluids are suitable for use with most refrigerants but the use of detergents containing chlorine shall be avoided as the chlorine may react with the refrigerant and corrode the copper pipe work.
  • Page 68 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 3.5.3.16 Decommissioning Before carrying out this procedure, it is essential that the technician is completely familiar with the equipment and all its detail. It is recommended good practice that all refrigerants are recovered safely.
  • Page 69 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL when applicable, flammable refrigerants. In addition, a set of calibrated weighing scales shall be available and in good working order. Hoses shall be complete with leak-free disconnect couplings and in good condition. Before using the recovery machine, check that it is in satisfactory working order, has been properly maintained and that any associated electrical components are sealed to prevent ignition in the event of a refrigerant release.
  • Page 70: Exploded View And Parts List

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 4 EXPLODED VIEW AND PARTS LIST Model: GRS-2.3Pd/TD200ANpH-K, GRS-2.3Pd/TD270ANpH-K Exploded Views and spare parts list: Name of Part Part Code Quantity Water Tank Bottom Feet 26902848 Water Pipe Connector 035033060001 Magnesium Bar Sub-Assy...
  • Page 71: Maintenance

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Name of Part Part Code Quantity 01500406000602(270L) Magnesium Bar Sub-Assy 01500406000601(200L) Compressor and Fittings 009001061117 Strainer 0721160101 Electronic Expansion Valve 072009060053 Pressure Protect Switch 46020011 Nozzle for Adding Freon 61200101 4-Way Valve...
  • Page 72: Maintenance Of Anode Rod

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL 2 Maintenance of Anode Rod The unit adopts electronic Mg-Stick anode for corrosion prevention. (Frequency: Every Half Year - Replace if required) The Mg-stick (anode) protects the inner tank of water tank. When the Mg-stick become degraded the level of protection is diminished.
  • Page 73: Attachment

    GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL ATTACHMENT Table of the Temperature Sensor Resistance and Temperature The following tables list the mapping relationship between resistance of different temperature sensors and temperature. The resistance for different temperature can be queried during maintenance.
  • Page 74 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Temperature Resistance Temperature Resistance Temperature Resistance (°C) (kΩ) (°C) (kΩ) (°C) (kΩ) 22.53 2.133 0.382 21.51 2.064 0.372 20.54 1.997 0.363 19.63 1.933 0.355 18.75 1.871 0.346 17.93 1.811 0.338 17.14 1.754...
  • Page 75 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Temperature Resistance Temperature Resistance Temperature Resistance (°C) (kΩ) (°C) (kΩ) (°C) (kΩ) 137.2 7.173 0.9043 129.9 6.905 0.8799 6.648 0.8562 116.5 6.403 0.8333 110.3 6.167 0.8111 104.6 5.942 0.7895 99.13 5.726 0.7687...
  • Page 76 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Temperature Resistance Temperature Resistance Temperature Resistance (°C) (kΩ) (°C) (kΩ) (°C) (kΩ) 16.1 1.609 0.3024 15.43 1.561 0.2956 14.79 1.515 0.2891 14.18 1.47 — — (3) Temperature sensor of 50 kΩ (discharge temperature sensor and water temperature sensors)
  • Page 77 GREE AIR SOURCE HEAT PUMP WATER HEATER SERVICE MANUAL Temperature Resistance Temperature Resistance Temperature Resistance (°C) (kΩ) (°C) (kΩ) (°C) (kΩ) 107.96 9.1655 1.5602 102.85 8.9542 1.522 98.006 8.5551 1.485 93.42 5.9676 1.449 89.075 7.9913 1.4141 84.956 7.7257 1.3803 81.052 7.4702...
  • Page 78 JF00305663...

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