Gree VERSATI IV GRS-CQ4.0Pd/NhH3-E Service Manual
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Gree VERSATI IV GRS-CQ4.0Pd/NhH3-E Service Manual

Gree VERSATI IV GRS-CQ4.0Pd/NhH3-E Service Manual

Split type air to water heat pump
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Change for life
Service Manual
VERSATI IV Split Type Air To Water Heat Pump
Models:
GRS-CQ4.0Pd/NhH3-E
GRS-CQ6.0Pd/NhH3-E
GRS-CQ8.0Pd/NhH3-E
GRS-CQ10Pd/NhH3-E
GRS-CQ12Pd/NhH3-E
GRS-CQ14Pd/NhH3-E
GRS-CQ12Pd/NhH3-E1
GRS-CQ14Pd/NhH3-E1
GRS-CQ16Pd/NhH3-E1
GRS-CQ8.0Pd/NhH3-M
GRS-CQ10Pd/NhH3-M
GRS-CQ12Pd/NhH3-M
GRS-CQ14Pd/NhH3-M
GRS-CQ12Pd/NhH3-M1
GRS-CQ14Pd/NhH3-M1
GRS-CQ16Pd/NhH3-M1

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Summary of Contents for Gree VERSATI IV GRS-CQ4.0Pd/NhH3-E

  • Page 1 Change for life Service Manual VERSATI IV Split Type Air To Water Heat Pump Models: GRS-CQ4.0Pd/NhH3-E GRS-CQ8.0Pd/NhH3-M GRS-CQ6.0Pd/NhH3-E GRS-CQ10Pd/NhH3-M GRS-CQ8.0Pd/NhH3-E GRS-CQ12Pd/NhH3-M GRS-CQ10Pd/NhH3-E GRS-CQ14Pd/NhH3-M GRS-CQ12Pd/NhH3-E GRS-CQ12Pd/NhH3-M1 GRS-CQ14Pd/NhH3-E GRS-CQ14Pd/NhH3-M1 GRS-CQ12Pd/NhH3-E1 GRS-CQ16Pd/NhH3-M1 GRS-CQ14Pd/NhH3-E1 GRS-CQ16Pd/NhH3-E1...
  • Page 2 To Users Thank you for selecting Gree’s product. Please read this instruction manual carefully before installing and using the product, so as to master and correctly use the product. In order to guide you to correctly install and use our...

  • Page 3: Table Of Contents

    Contents Safety Notices (Please be sure to abide ) ..............IV 1 Nomenclature......................1 2 Technical Data ......................2 2.1 Parameter List ........................2 2.2 Temperature Sensor Parameter ..................7 2.3 Work Pressure ........................7 2.4 Capacity, Power and Efficiency ..................7 3 Operation Principle ....................40 4 Main Components ....................

  • Page 4: Safety Notices (Please Be Sure To Abide )

    Air-to-water Heat Pump Split Versati Safety Notices (Please be sure to abide ) WARNING: If not abide strictly, it may cause severe damage to the unit or the people. NOTE: If not abide strictly, it may cause slight or medium damage to the unit or the people.
  • Page 5 Air-to-water Heat Pump Split Versati WARNING Once abnormality Don't operate the unit with Before likeburning smell occurs, wet hand. installation,please see please cut off the power if the voltage of local supply immediately and place accords with then contact with service that on nameplate center.
  • Page 6 Air-to-water Heat Pump Split Versati Before cleaning please cut The power supply must User can not change off the power supply. adopt special circuit with power cord socket leakage switch and enough without prior consent. capacity. Wiring working must be done by professionals.
  • Page 7 Air-to-water Heat Pump Split Versati Don't step on the top of the Never block the air inlet and Keep pressurized unit or place anything on it. outlet of unit. spray, gas holder and so on away from the unit above 1m . There is the danger of fall of things or people.
  • Page 8 Air-to-water Heat Pump Split Versati WARNING Do not use means to accelerate the defrosting process or to clean, other than those recommended by the manufacturer. Should repair be necessary, contact your nearest authorized service centre. Any repairs carried out by unqualified personnel may be dangerous.
  • Page 9 Air-to-water Heat Pump Split Versati To realize the function of the air conditioner unit, a special refrigerant circulates in the system. The used refrigerant is the fluoride R32, which is specially cleaned.The refrigerant is flammable and inodorous. Furthermore, it can leads to explosion under certain conditions.
  • Page 10 Air-to-water Heat Pump Split Versati maximum and minimum water operating temperatures. Maximum Minimum water operating Item water operating temperatures temperatures Cooling 5°C 25°C Heating 20°C 65°C Water heating 40°C 80°C maximum and minimum water operating pressures. Minimum water operating Maximum water Item pressures operating pressures...

  • Page 11: Nomenclature

    Air-to-water Heat Pump Split Versati 1 Nomenclature Description Options GREE G-GREE Air to Water Heat Pump Heating Mode S= Static; C=Circulating Function Q=Multi-function; Omit=Single-function Nominal Heating Capacity 10=10kW; 12=12kW;..Compressor Style Pd=DC Inverter; Omit=On/Off Refrigerant Nh=R32 Design Serial Number H3: generation Power Supply and Fan Type E/M=230/400V,~50Hz;...

  • Page 12: Technical Data

    Air-to-water Heat Pump Split Versati 2 Technical Data 2.1 Parameter List GRS-CQ4.0Pd/ GRS-CQ6.0Pd/ GRS-CQ8.0Pd/ GRS-CQ10Pd/ Model NhH3-E NhH3-E NhH3-E NhH3-E Product Code ER01002690 ER01002680 ER01002650 ER01002660 Power Supply 230VAC, 50HZ 230VAC, 50HZ 230VAC, 50HZ 230VAC, 50HZ Cooling 4.50 6.50 8.40 10.20 (floor cooling) Capacity*1...
  • Page 13 Air-to-water Heat Pump Split Versati GRS-CQ12Pd/ GRS-CQ14Pd/ GRS-CQ12Pd/ GRS-CQ14Pd/ Model NhH3-E NhH3-E NhH3-E1 NhH3-E1 Product Code ER01002610 ER01002630 ER01002810 ER01002830 Power Supply 230VAC, 50HZ 230VAC, 50HZ 230VAC, 50HZ 230VAC, 50HZ Cooling 12.00 13.30 12.00 13.70 (floor cooling) Capacity*1 Heating 12.20 14.50 12.20 14.60...
  • Page 14 Air-to-water Heat Pump Split Versati GRS-CQ16Pd/ GRS-CQ8.0Pd/ GRS-CQ10Pd/ GRS-CQ12Pd/ Model NhH3-E1 NhH3-M NhH3-M NhH3-M Product Code ER01002870 ER01002670 ER01002640 ER01002620 Power Supply 230VAC, 50HZ 400VAC, 50HZ 400VAC, 50HZ 400VAC, 50HZ Cooling 14.60 8.40 10.00 12.00 (floor cooling) Capacity*1 Heating 16.00 8.30 10.20 12.20...
  • Page 15 Air-to-water Heat Pump Split Versati GRS-CQ14Pd/ GRS-CQ12Pd/ GRS-CQ14Pd/ GRS-CQ16Pd/ Model NhH3-M NhH3-M1 NhH3-M1 NhH3-M1 Product Code ER01002600 ER01002800 ER01002820 ER01002860 Power Supply 400VAC, 50HZ 400VAC, 50HZ 400VAC, 50HZ 400VAC, 50HZ Cooling 13.30 12.50 13.80 14.90 (floor cooling) Capacity*1 Heating 14.50 12.20 14.60 16.00...
  • Page 16 Air-to-water Heat Pump Split Versati Notes: 1* Capacites and power inputs are based on the following conditions Cooling conditions • Outdoor air temperature 35°C DB/-WB Entering water temperature 23°C Leaving water temperature 18°C Heating conditions • Outdoor air temperature 7°CDB/6°CWB Entering water temperature 30°C Leaving water temperature 35°C Standing piping length 5m...

  • Page 17: Temperature Sensor Parameter

    Air-to-water Heat Pump Split Versati 2.2 Temperature Sensor Parameter Nominal working datas Displayed Name Range Remark Cooling Heating Hot water T-outdoor -40~150 -17~50 -35~37 -27~45 temperature sensor resistance 15K T-suction -40~150 5~30 -35~20 -25~30 temperature sensor resistance 20K T-discharge -30~150 30~102 35~102 35~102...
  • Page 18 Air-to-water Heat Pump Split Versati (1) Single-phase units for cooling Ambient Temp(°C)
  • Page 19 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 20 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 21 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 22 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 23 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 24 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 25 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 26 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 27 Air-to-water Heat Pump Split Versati (2) Three-phase units for cooling Ambient Temp(°C)
  • Page 28 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 29 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 30 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 31 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 32 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 33 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 34 Air-to-water Heat Pump Split Versati (3) Single-phase units for heating Ambient Temp(°C)
  • Page 35 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 36 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 37 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 38 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 39 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 40 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 41 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 42 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 43 Air-to-water Heat Pump Split Versati (4) Three-phase units for heating Ambient Temp(°C)
  • Page 44 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 45 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 46 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 47 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 48 Air-to-water Heat Pump Split Versati Ambient Temp(°C)
  • Page 49 Air-to-water Heat Pump Split Versati Ambient Temp(°C)

  • Page 50: Operation Principle

    Air-to-water Heat Pump Split Versati 3 Operation Principle Name Name Outdoor unit Radiator Indoor unit Underfloor coils Other thermal Buffer tank Notes (e) Water mixing accessories are optional parts. When they are required, please contact the manufacturer. The diagram above is just for reference and actual installation depends on the project’s field.Buffer tank specifications should be calculated based on 8-10L/KW.

  • Page 51: Main Components

    Air-to-water Heat Pump Split Versati 4 Main Components 4.1 Indoor Units...
  • Page 52 Air-to-water Heat Pump Split Versati...
  • Page 53 Air-to-water Heat Pump Split Versati Name Connection Sheet Sub-Assy Connection Board controller holder Auto Air Outlet Valve Electric Heater Connection Sheet Sub-Assy Plate-type Heat Exchanger Sub-Assy Water Pump Drainage Pipe Sub-assy Relief Valve Electric starter of water valve Sealing Cap(Pressure Warning) Connection Board Expansion Drum Water Pipe Connector...
  • Page 54 Air-to-water Heat Pump Split Versati Display Board Terminal Board Terminal Board Supporter Main Board Filter Bipolar AC Contactor...

  • Page 55: Outdoor Units

    Air-to-water Heat Pump Split Versati 4.2 Outdoor Units (1) Outdoor Units with a Single Fan...
  • Page 56 Air-to-water Heat Pump Split Versati Model GRS-CQ4.0Pd/NhH3-E 1000 GRS-CQ6.0Pd/NhH3-E GRS-CQ8.0Pd/NhH3-E GRS-CQ10Pd/NhH3-E GRS-CQ12Pd/NhH3-E GRS-CQ14Pd/NhH3-E 1067 GRS-CQ10Pd/NhH3-M GRS-CQ12Pd/NhH3-M GRS-CQ14Pd/NhH3-M (2) Outdoor Units with Dual Fans...
  • Page 57 Air-to-water Heat Pump Split Versati Model GRS-CQ12Pd/NhH3-E1 GRS-CQ14Pd/NhH3-E1 GRS-CQ16Pd/NhH3-E1 1352 GRS-CQ12Pd/NhH3-M1 GRS-CQ14Pd/NhH3-M1 GRS-CQ16Pd/NhH3-M1...

  • Page 58: Electric Wiring

    Air-to-water Heat Pump Split Versati 5 Electric Wiring Please see the wiring diagrams stuck to the unit for actual wiring guides. 6 Introduction to Functional Parameters 6.1 Weather depend At the function setting page, by touching “Weather depend”, there will be a choice box, where it is able to set it to “On”...

  • Page 59: User Parameter Setting

    Air-to-water Heat Pump Split Versati 6.2 User Parameter Setting At the menu page, by touching “PARAMETER”, it will back to the parameter setting page, as shown in the figure below. Parameter Setting Page Range Range Displayed Name Full Name Default Remarks (°C) (°F)
  • Page 60 Air-to-water Heat Pump Split Versati Range Range Displayed Full Name Name Default Remarks (°C) (°F) Maximal allowable water temperature by WT-Hot water max 40~80°C 104~176°F 80°C/176°F users for water heating Leaving water temperature setting WOT-Cool Range 5~25°C 41~77°F 10°C/50°F range for cooling Leaving water temperature setting WOT-Heat Range...

  • Page 61: Sg Function

    Air-to-water Heat Pump Split Versati 6.2.3 SG 6.3 SG function At the menu page, by touching “Commissionining” and then entering the correct password (000048), the following page will be accessed to, as shown in the figure below. SG smart grid EVU Photovoltaic signal Command Remarks...
  • Page 62 Air-to-water Heat Pump Split Versati When the electric heater works, take the smaller between T-water tank Range and WT- hot water max. Take the smaller between When the electric heater does (T-water tank+ΔWT-hot water not work, take the smaller Hot water AT) and WT-hot water max.

  • Page 63: Floor Debug

    Air-to-water Heat Pump Split Versati 6.4 Floor debug At the commissioning parameter setting page, by touching “Floor debug”, the control panel will go to the corresponding setting page. Full Name Displayed Name Range Default Accuracy Floor debug switch Floor debug On/Off Quantity of segments Segments...

  • Page 64: Other Thermal

    Air-to-water Heat Pump Split Versati 6.5 Other thermal At the commissioning parameter setting page, by touching “Other thermal”, the control panel will go to the corresponding setting page. Other thermal: With/Without T-Other swtich on:-20 (settable) °C Logic: 1/2/3 For example, when the other thermal is turned on and the ambient temperature is less than -20 , the heat pump will be turned off, and the system will execute the command according to the selected logic;...

  • Page 65: Optional E-Heater

    Air-to-water Heat Pump Split Versati 6.6 Optional E-Heater At the commissioning parameter setting page, by touching “Optional E-Heater”, the control panel will go to the corresponding setting page. Optional E-heater:/1/2 T-Eheater:15-20 (settable) °C Logic:1/2 For example, when the optional E-Heater is selected as 1 and the ambient temperature is less than -15 °C , the system will turn on one group and execute the command according to the selected logic;...

  • Page 66: Commissioning

    Air-to-water Heat Pump Split Versati 7 Commissioning 7.1 Error Code List Full Name Displayed Name Error Code Ambient temperature sensor error Ambient sensor Defrosting temperature sensor error Defrost sensor Discharge temperature sensor error Discharge sensor Suction temperature sensor error Suction sensor Economizer inlet temperature sensor Econ.
  • Page 67 Air-to-water Heat Pump Split Versati Full Name Displayed Name Error Code Desynchronization Desynchronize Compressor stalling Comp. stalling Radiator or IPM or PFC over-temperature Overtemp.-mod. Radiator or IPM or PFC temperature sensor error T-mod. sensor Charging circuit error Charge circuit AC input voltage error AC voltage Ambient temperature sensor error at the drive board Temp-driver...

  • Page 68: Flow Chart Of Troubleshooting

    Air-to-water Heat Pump Split Versati 7.2 Flow Chart of Troubleshooting (1) Compressor High-pressure Protection E1 Comp High-pressure protection E1 Replace the High-pressure Check if the High-pressure switch switch is broken Check if the High-pressure switch Replace the wiring wiring is loose. Check if the water in Fill the tank with the water the tank is enough Install rightly the Check if the installation of tank temp sensor tank temp sensor is correct Check if the gas valve and Fully open the valve liquid valve are fully open Replace the electronic Check if the electric expansion expansion valve valve can work normally...
  • Page 69 Air-to-water Heat Pump Split Versati (2) Compressor Low- pressure Protection E3 Comp Low-pressure Protection E3 Replace comp Check if comp low-pressure switch low- pressure or rewire is broken or the wiring is loose. Check the fans Check if the fans stop running or reverse Repair the leakage of system pipe and add refrigerant Check if the system has leaked according to the required volume (3) Compressor Discharge Temp Protection E4 Comp Discharge Temp Protection E4 Measure if the Measure if the exhaust Replace the corresponding resistance of temperature temperature of compressor exhaust temperature  sensor is correct reaches120℃ sensor Replace the mainboard of AP2 Check if the the electronic Replace the electronic expansion valve is blocked...
  • Page 70 Air-to-water Heat Pump Split Versati (4) Overload Protection of Compressor or Driver Error Comp Overload Protection Check if the AC Replace the AC contactor contactor is damaged Adjust the Check if the compressor compressor wiring wiring is correct Contact the power Check if the voltage is normal supply company Recharge suitable Check if the refrigerant of amount of the refrigerant the system is excessive (5) DC Fan Error EF EF is displayed on the wired controller Is the motor wire Adjust the motor wire phase sequence right?
  • Page 71 Air-to-water Heat Pump Split Versati (6) Temperature Sensor Error Temperature Sensor Error Check if the plug Check the orientation on temperature sensor is correctly of plug and socket connected to the socket. Check if the resistance of Replace the temperature sensor is correct. temperature sensor Replace the mainboard of the AP1 or AP2 (7) Communication Malfunction E6...
  • Page 72 Air-to-water Heat Pump Split Versati (8) Capacity Switch Error (Code:"C5") E5 is displayed on the wired controller Is the jumper Connect the jumper connected ? Is the number Connect the right of the jumper jumper right ? Is the jumper Tighten the jumper loose ? Replace the...
  • Page 73 Air-to-water Heat Pump Split Versati (10) Welding protection for the electric heater (Code:"EH") Welding protection for the electric heater (EH) Is the AC contactor damaged? Replace the AC contactor of Check it after it is powered off. the electric heater Is an alarm raised after it is Hardware of the mainboard is powered off?
  • Page 74 Air-to-water Heat Pump Split Versati 7.3 Diagnosis of Drive (1) Drive Module Reset(Code:"P0") ; IPM or PFC Temperature Sensor Error(Code:"P7") ; AC Current Protection (Input Side)(Code:"PA"); Current Sense Circuit Error(code:"PC"); PFC Protection(Code:"HC") “Driver reset”,“T-mod. sensor”, “AC curr. pro.”,“FPC defective” or “Current sen.” is displayed on the wired controller P0, P7, PA, HC or PC is displayed...
  • Page 75 Air-to-water Heat Pump Split Versati (2) IPM or PFC Over-temperature Protection(Code:"P8") “Overtemp.-mod.” is displayed on the wired controller P8 is displayed in the mainboard 88 Indicating Lamp Is the IPM or PFC module of the driver board AP4 tightened ? Replace the driver Tighten the IPM or board AP4...
  • Page 76 Air-to-water Heat Pump Split Versati (3) DC Busbar Over-voltage Protection(Code:"PH") ; DC Busbar Under-voltage Protection (Code:"PL") “DC over-vol.” or “DC under-vol.” is displayed on the wired controller PH or PL is displayed in the mainboard 88 Indicating Lamp Is input voltage ranged from 185VAC to 264VAC? Replace the driver board AP4.
  • Page 77 Air-to-water Heat Pump Split Versati (4) Drive-to-main-control Communication Error(Code:"P6") “Drive-main com.” is Displayed on the wired controller P6 is displayed in the mainboard 88 Indicating Lamp Is the CPU tightened? Replace Tighten the CPU the driver board AP4 Work Normally (5) Compressor Startup Failure(code:"LC") "Start failure" is displayed on the...
  • Page 78 Air-to-water Heat Pump Split Versati (6) Compressor Current Protection (Code:"P5"); Compressor Motor Desynchronizing (Code:"H7"); IPM Protection (Code:"H5"); Phase Loss (Code:"LD") “Com. over-curr.”, “Desynchronize”, “IPM defective” or “Phase loss” is Displayed on the wired controller P5、H7、H5 or LD is displayed in the mainboard 88 indicating lamp Is the...
  • Page 79 Air-to-water Heat Pump Split Versati (8) PP1 Check the input voltage in real time. Is the input phase voltage always larger than 285V or lower than 158V in a cycle? The program judges that the input busbar The program runs voltage is abnormal, continuously.

  • Page 80: Daily Maintenance

    Air-to-water Heat Pump Split Versati (9) PD2 the sampling current in current higher than the set point? The program judges that the sampling current is The program runs abnormal, the unit shuts down, and an alarm is raised. The alarm is processed and the program quits.

  • Page 81: Repair

    Air-to-water Heat Pump Split Versati NOTE The water pressure gage is installed in returning water line in the indoor unit, Please adjust the hydraulics system pressure according to next item: (1) If the pressure is less than 0.5 bar, please recharge the water immediately; (2) When recharging, the hydraulics system pressure should be not more than 2.5 Bar.
  • Page 82 Air-to-water Heat Pump Split Versati Picture Name Function It is used to prevent the heat exchanger from being frozen owing to reduced water flow rate. When the flow rate goes Flow Switch down to the point at which the flow switch will act, the switch will trip off and the unit will raise an alarm and shut down.

  • Page 83: Charging And Discharging Of Refrigerant

    Air-to-water Heat Pump Split Versati 9.2 Charging and Discharging of Refrigerant The unit has been charged with refrigerant before delivery. Overcharging or undercharging will cause the compressor to run improperly or be damaged. When refrigerant is required to be charged or discharged for installation, maintenance and other reasons, please follow steps below and nominal charged volume on the nameplate.
  • Page 84 Add: West Jinji Rd, Qianshan, Zhuhai,Guangdong, China, 519070 Tel: (+86-756) 8522219 Fax: (+86-756) 8669426 E-mail: global@cn.gree.com www.gree.com For continuous improvement in the products, Gree reserves the right to modify the product specification and appearance in this manual without notice and without incurring any oblication.

This manual is also suitable for:

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