Gree VERSATI III Series Service Manual
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Gree VERSATI III Series Service Manual

Air to water heat pump
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  • Page 1 VERSATI Ⅲ Air To Water Heat Pump...

  • Page 2: Table Of Contents

    Contents ENGINEERING DATA ..........................5 1 Product Data............................6 1.1 Lineup............................6 1.2 Nomenclature ..........................7 1.3 Product Features........................... 8 1.4 Operating Principle ........................10 1.5 Technical Data ..........................11 2 Outline Dimensions ..........................16 3 Explosive Views and Part Lists ......................17 4 Supply Scope ............................
  • Page 3 2.6 Control to the Fan ........................39 2.7 Control to the 4-way Valve ......................40 2.8 Control to the Water Pump ......................40 2.9 Control the Electrostatic Expansion Valve .................. 40 2.10 Protection Control ........................40 3 Controller ............................... 41 3.1 General............................
  • Page 4 3.2 Comp Low- pressure Protection E3 ..................118 3.3 Comp Discharge Temp Protection E4 ..................119 3.4 Overload Protection of Compressor or Driver Error ..............120 3.5 DC Fan Error EF ........................121 3.6 Temperature Sensor Error ......................121 3.7 Communication Malfunction E6 ....................122 3.8 Capacity Switch Error (Code:"C5") ...................

  • Page 5: Engineering Data

    Engineering Data ENGINEERING DATA...

  • Page 6: Product Data

    Engineering Data 1 Product Data 1.1 Lineup 1.1.1 Main Unit Cooling Heating Power Product Series Model Capacity Capacity Refrigerant Appearance Code Supply (kW) (kW) GRS-CQ4.0P ER01001350 d/NhG-K GRS-CQ6.0P ER01001360 d/NhG-K GRS-CQ8.0P ER01001370 d/NhG-K GRS-CQ10P 220-240V, ER01001410 d/NhG-K ~,50Hz GRS-CQ12P ER01001400 d/NhG-K VERSATI GRS-CQ14P...

  • Page 7: Nomenclature

    SXVD300LCJ2/A-K ER20000190 SXVD300LCJ2/A-M ER20000270 1.2 Nomenclature 1.2.1 Main Unit Description Options GREE G-GREE Air to water heat pump Heat Pump Water Heater Heating Mode S= Static; C=Circulating Function Q=Multi-function; Omit=Single-function Nominal Heating Capacity 6.0=6.0kW; 8.0=8.0kW;10=10kW; 12=12kW; 14=14kW; 16=16kW Compressor Style Pd=DC Inverter;...

  • Page 8: Product Features

    Engineering Data Default-Non-bearing water tank; Bearing C-Bearing water tank Default-No heat exchanger; Type of Heat Exchange Tube J-Inner coil static heating(J-Single coil; J2-Double coils); JW-Outer coil static heating A,B,C…… Serial Number Power Supply K=220-240V,~,50Hz; M=380-415V,3N~,50Hz; H=380V,3N~,60Hz 1.3 Product Features 1.3.1 General It‘s a kind of integrated DC inverter unit that comprises cooling, heating and water heating functions, and up to 5.0 energy efficiency.
  • Page 9 Engineering Data 1. The A-class high-efficiency inverter water pump which complies with the European ErP directive, can control the running frequency based on the actual load. Therefore, it can enhance the operation effcieicy and control the water temperature more accurately. 2.

  • Page 10: Operating Principle

    Engineering Data 1.4 Operating Principle 1.4.1 Schematic Diagram...

  • Page 11: Technical Data

    Engineering Data 1.5 Technical Data 1.5.1 Parameter List GRS-CQ4.0Pd/ GRS-CQ6.0Pd GRS-CQ8.0Pd GRS-CQ10Pd/ Model NhG-K /NhG-K /NhG-K NhG-K Product Code ER01001350 ER01001360 ER01001370 ER01001410 Cooling(floor cooling) Capacity* Heating(floor heating) Cooling(floor cooling) 0.82 1.26 1.55 1.96 Power Input* Heating(floor heating) 0.78 1.20 1.63 2.15 EER*...
  • Page 12 Engineering Data Cooling(for Fan coil) Capacity* Heating(Fan coil or 15.5 Radiator) Cooling(for Fan coil) 3.11 4.14 4.73 2.48 Power Heating(Fan coil or Input* 3.48 4.18 4.70 2.67 Radiator) EER* (for Fan coil) 3.05 2.75 3.15 COP* (Fan coil or Radiator) 3.55 3.40 3.75...
  • Page 13 10~48 Heating 25～60 -25~35 Water Heating 40~80 (Water Tank Temperature) -25~45 Note: when operating conditions are out of the range listed above, please contact GREE. 1.5.4 Electric Data Minimum Sectional Minimum Sectional Power Supply Leakage Switch Area of Power Area of Earth Wire...
  • Page 14 Engineering Data GRS-CQ14Pd/NhG-K 2×3.3 GRS-CQ16Pd/NhG-K 2×3.3 GRS-CQ10Pd/NhG-M 4×2.1 GRS-CQ12Pd/NhG-M 4×2.1 380-415V,3N~,50Hz GRS-CQ14Pd/NhG-M 4×2.1 GRS-CQ16Pd/NhG-M 4×2.1 Notes ① Leakage Switch is necessary for additional installation. If circuit breakers with leakage protection are in use, action response time must be less than 0.1 second, leakage circuit must be 30mA.
  • Page 15 Engineering Data 11(51.8) 1.290 1.250 1.202 1.152 1.102 12(53.6) 1.340 1.300 1.252 1.200 1.152 13(55.4) 1.390 1.350 1.302 1.252 1.202 14(57.2) 1.442 1.402 1.350 1.302 1.252 15(59.0) 1.490 1.450 1.400 1.350 1.302 18(64.4) 1.539 1.502 1.451 1.402 1.350 Computer of actual cooling capacity: actual cooling capacity = nominal cooling capacity x cooling capacity correction coefficient.

  • Page 16: Outline Dimensions

    Engineering Data 2 Outline Dimensions  GRS-CQ4.0Pd/NhG-K, GRS-CQ6.0Pd/NhG-K, GRS-CQ8.0Pd/NhG-K  GRS-CQ10Pd/NhG-K,GRS-CQ12Pd/NhG-K,GRS-CQ14Pd/NhG-K,GRS-CQ16Pd/NhG-K GRS-CQ10Pd/NhG-M,GRS-CQ12Pd/NhG-M,GRS-CQ14Pd/NhG-M,GRS-CQ16Pd/NhG-M...

  • Page 17: Explosive Views And Part Lists

    Engineering Data 3 Explosive Views and Part Lists (1) GRS-CQ4.0Pd/NhG-K, GRS-CQ6.0Pd/NhG-K, GRS-CQ8.0Pd/NhG-K Parts List of GRS-CQ4.0Pd/NhG-K, GRS-CQ6.0Pd/NhG-K, GRS-CQ8.0Pd/NhG-K Name of part Part Code Quantity Electric Box Assy 100002061829 Main Board 300027060242 Main Board 300027060253 Main Board 300002060375 Wiring Board 420001000002 Wiring Board 422000000009 Wiring Board...
  • Page 18 Engineering Data Electronic Expansion Valve 07133978 Automatic exhaust valve 07108208 Water Pump 812007000002 Strainer 0721200102 Valve Support 01705065 Plate-type Heat Exchanger Assy 007023060027 Handle 26235253 Relief Valve 07382814 Steam Current Switch Sub-assy 45028062 Electrical Heater 765100049 Drainage Joint 06123401 Drainage Hole Cap 76713033 Drainage Hole Cap 76713068...
  • Page 19 Engineering Data Display Board 300001060261 Sensor Sub-assy 390002060040 (2) GRS-CQ10Pd/NhG-K,GRS-CQ12Pd/NhG-K,GRS-CQ14Pd/NhG-K,GRS-CQ16Pd/NhG-K GRS-CQ10Pd/NhG-M,GRS-CQ12Pd/NhG-M,GRS-CQ14Pd/NhG-M,GRS-CQ16Pd/NhG-M Parts List Name of part Part Code Quantity Inductor 43128000014 Wiring board 42011103 Main board 300027060253 Filter board 30223000044 Wiring board 422000000009 Wiring board 422000000010 Wiring board 420001000004 Magnetic Ring 49010118 Electric Box Assy 100002061830...
  • Page 20 Engineering Data Magnet Coil 4300040030 4-way Valve Assy 030152060077 Pressure Sensor 430044000009 Electronic Expansion Valve 07135176 Electric Expand Valve Fitting 43000344 Steam Current Switch Sub-assy 45028062 Nozzle for Adding Freon 06120016 Water Pump 812007000002 Plate-type Heat Exchanger Sub-Assy 030166060020 Relief Valve 07382814 Electrical Heater 765100049...

  • Page 21: Supply Scope

    Engineering Data 4 Supply Scope S= Standard O= Optional F= Field Supplied Name Standard Optional Field Supplied √ Owner's Manual for the Main Unit Owner‘s Manual for the Control √ √ 2-way Valve √ 3-way Valve √ Remote Temperature Sensor √...

  • Page 22: Design & Selection

    Design and Selection DESIGN & SELECTION...

  • Page 23: Installation Example

    Unit Control 1 Installation Example CASE 1: Connecting Under-floor Coil for Heating and Cooling Notes: ① The two-way valve is very important to prevent dew condensation on the floor and radiator while cooling mode; ② Type of thermostat and specification should be complied with installation of this manual; ③...

  • Page 24: Model Selection

    Unit Control Notes: ① In this case, three-way valve should be installed and should be complied with installation of this manual; ② Sanitary water tank should be equipped with internal electric heater to secure enough heat energy in the very cold days; CASE 3: Connecting Sanitary Water Tank and Heat Emitters for Heating and Cooling Two-way valve is very important to prevent dew condensation on the floor and radiator while cooling mode.

  • Page 25: Operation Conditions

    Unit Control 2.2 Operation Conditions Capacities and power inputs are based on the following conditions (floor heating /cooling ) a. Cooling conditions b. Heating conditions Indoor Water Temp 23° C/18° C; Indoor Water Temp 30° C/35° C; Outdoor Air Temp 35° C DB/24° C WB Outdoor Air Temp 7°...

  • Page 26: Selection Of Tube Spacing Of The Underfloor Coils

    Unit Control Guest Room 100~130 Study Room 100~120 Notes： ③ Villas whose load is generally larger than the houses should take the value between the middle and the maximum empirical values listed above. ④ The top layer whose load is generally larger than the middle or bottom layer should take the maximum empirical value.

  • Page 27: Quantity And Location Of The Water Traps And Collectors

    Unit Control The reason why the square-shaped coils are recommended is because they can keep even temperature distribution. Special demand can be met by adjusting the tube spacing. Distance from the room to the water trap/collector should be estimated according to the actual conditions of the project and generally should not exceed 30m.
  • Page 28 Unit Control Distance between the unit and the water trap (collector) should be within 15m. If the distance exceeds 20m, then it is required to calculate the hydraulic power.

  • Page 29: Requirements On Installation Of The Water Trap (Collector)

    Unit Control 4.2 Requirements on Installation of the Water Trap (Collector) The water trap (collector) should be installed on the wall or inside the special box. For housing constructions, it is generally installed in the kitchen. The valve for the water trap (collector) should be installed horizontally and keep a distance of at least 300mm to the ground.

  • Page 30: Selection Of The Water Tank

    Unit Control Floor ceiling —— 213~2040 1.9~10.8 2.8~16.2 type Cassette —— 480~1700 4.5~9 6.8~13.7 type 6 Selection of the Water Tank 6.1 Specifications of the Water Tank SXVD200LCJ/A-K 220~240V-1N-50Hz SXVD300LCJ/A-K A single coil with the electric heater is integrated, used for floor heating system SXVD200LCJ2/A-K 220~240V-1N-50Hz SXVD300LCJ2/A-K...

  • Page 31: Examples For Model Selection

    Unit Control t (design temperature): generally it is 60° C ; t (entering cold water temperature): it differs for different regions; t ( water tank temperature set point): it is the target heating temperature of the water tank. α: correction factor Empirical Values for Volume Correction of the Water Tank Duration of Use (min/Person)

  • Page 32: Model Selection

    Unit Control If the outer diameter of the heating pipe is 20mm and thickness is 2mm, then the minimum flow for the heating pipe is: It can be see that the arranged piping system for the bathroom does not meet the technical requirement and must be used in common for the master room.

  • Page 33: Unit Control

    Unit Control UNIT CONTROL...

  • Page 34: Integral Control Concept

    Unit Control 1 Integral Control Concept 1.1 Control Principle Diagram 1. The outdoor temperature is detected by the sensor installed at fins of the finned heat exchanger, which is mainly used to control the initialization steps of the fan and the electrostatic expansion valve and also limit the maximum running frequency of the compressor.
  • Page 35 Unit Control tank will stop. Then, the main unit will resume normal running when this error is eliminated. 5. The temperature sensor at the economizer is used to detect the temperature of the economizer after throttling via the electrostatic expansion 2. Under the Heating or Hot Water mode, this sensor and that at the economizer outlet both are used to control the opening angle of the electrostatic expansion valve 2.
  • Page 36 Unit Control 16. The leaving and entering water temperature of the solar panel and also the solar panel temperature are detected by sensors installed at the inlet pipe, outlet pipe and solar panel of the solar system respectively. Theses sensors are mainly used to control the water pump of the hot water of the solar system.

  • Page 37: Control Flowchart

    Unit Control 1.2 Control Flowchart 2 Main Control Logics 2.1 Cooling 2.1.1 Control to the Compressor When the unit is controlled by the leaving water temperature, the operating frequency of the compressor will be adjusted by the temperature difference in the way that it increases as the temperature difference goes up and it decreases as the temperature difference goes down.

  • Page 38: Heating

    Unit Control minimum operating frequency. Then if it is still detected that the leaving water temperature is lower than the freeze protection temperature, the main unit will stop as per the shutdown frequency but the water pump keeps normal operation. When it is detected that the leaving water temperature of the plate heat exchanger is equal to or larger than the freeze protection withdrawing temperature, freeze protection will exit.

  • Page 39: Shutdown

    Unit Control water heating range of the main unit, the water tank heater will start. At any time, only one between the auxiliary electric heater and the water tank heater is allowed to run. Over-temperature Protection for Water Heating When the compressor is running, if it is detected that the leaving water temperature of the auxiliary electric heater of the main unit is higher than the over-temperature protection temperature, the compressor will lower its operating frequency until it reaches the minimal operating frequency.

  • Page 40: Control To The 4-Way Valve

    Unit Control resumes operation when defrosting ends up. 2.7 Control to the 4-way Valve The 4-way valve always keeps on under the cooling mode and will off after the compressor starts up under the heating or water heating mode. When the unit comes into defrosting, the 4-way valve will be on and resume the off status when defrosting ends up.

  • Page 41: Controller

    Unit Control 3 Controller 3.1 General Press Button (This picture is just for reference) This display panel uses the capacitor touch screen for input operation. The valid touching area indicates the black rectangle when the display panel lights off. This control panel is of high sensitivity and will response to unexpected click by the foreign matters on the display panel.
  • Page 42 Unit Control Menu Page Item Description Current mode Current mode Data Current data Time Current time Function setting Go to the user setting page. Parameter setting Go to the parameter setting page. Parameter viewing Go to the parameter viewing page. Commissioning parameters Go to the commissioning parameter setting page.

  • Page 43: Operation Instructions

    Unit Control Error Icon [Notes] ●At any other page, where there is no operation in 10 minutes, the display panel will back to the menu page. 3.1.2 Backlight Among the general setting page, when ―Back light‖ is set to ―Energy save‖, the display panel will light off when there is no operation in 5 minutes.
  • Page 44 Unit Control FUNCTION Setting Page ★2. At the function setting page, by touching the page turning key, it will access to the last or next page. When setting is finished, by touching the homepage icon, it will directly back to the homepage; by touching the back icon, it will back to the upper menu.
  • Page 45 Unit Control release When the water tank is unavailable, it will be reserved 1. The disinfection date ranges from Monday to Disinfection On/Off Sunday. Saturday is defaulted. 23：00. 2. The disinfection time ranges from 00:00~23:00. 23:00 is defaulted. Clock timer On/Off Temp.
  • Page 46 Unit Control ★At the function setting page with the unit turned off, by touching ―Fast hot water‖, the display panel will go to the corresponding setting page, where desired option can be selected. Then by pressing ―OK‖ this setting will be saved and the display panel will back to the function setting page. [Notes]：...
  • Page 47 Unit Control ●When it is set to ―On‖, it will automatically back to ―Off‖ when the main unit is turned off; while it is set to ―Timer‖, this setting will remain when the main unit is turned off and can only be canceled manually. ●It will be memorized upon power failure.
  • Page 48 Unit Control the setting page of this option. ★4. At the weekday setting page, it is able to set the timer to ―Valid‖ or ―Invalid‖. Also, it is able to set three timing periods, each of which can be set to ―Valid‖ or ―Invalid‖. ★5.
  • Page 49 Unit Control has been activated, this function cannot be activated at the same time. When ―Disinfection‖ has been activated, ―Emergen.mode‖, ―Holiday mode‖, ―Floor debug‖ ―Manual defrost‖, or ―Refri. recovery‖ setting will fail and a window will pop up, saying ―Please disable the disinfect mode!‖ ●...
  • Page 50 Unit Control ● Water tank temperature can be set only when ―Hot water‖ is involved in the operation mode. ● The setting of ―Clock timer‖ only works once. If this setting is needed again, it should be set again. ● It will be deactivated when the unit is turned on manually. ●...
  • Page 51 Unit Control menu page. ★When the mode is not set to ―Heat‖ or ―Hot water‖, the display panel will tell ―Wrong running mode!‖ [Notes] ● The emergency mode is allowed on conditions that there is some error or protection and the compressor has stopped at least for three minutes.
  • Page 52 Unit Control ★ At the time period setting page, each time period can be set to ―Valid‖ or ―Invalid‖. ★ The option ―Mode‖ is used to preset the mode; ―WOT-Heat‖ is used to set the leaving cold/hot water temperature; ―Start timer‖ / ―End timer‖ is used to for time setting. After that, by touching the ―Save‖ icon, all settings will be saved.
  • Page 53 Unit Control [Notes]： ● It can be performed only when the unit is turned off. 3.2.2.16 WiFi Reset [Operation Instructions] ★At the function setting page, by touching ―WiFi‖, a choice box will pop up, where by touching ―OK‖ , the WiFi setting will be reset, and by touching ―Cancel‖...
  • Page 54 Unit Control default value also will change as the corresponding condition changes. ● All parameters will be memorized upon power failure. Parameter Setting Range Range Full Name Displayed Name Default Remarks (℃) (° F) Leaving water temperature for WOT-Cool 7~25℃ 45~77℉...
  • Page 55 Unit Control [Notes]  At the commissioning parameter setting page, when the state of any function changes, the system will automatically save this change and this change will remain upon power failure.  Do not modify any commissioning parameter except the approved qualified servicemen, as it would give birth to adverse effects to the unit.
  • Page 56 Unit Control Other thermal With/Without Without Optional Off/1/2 E-Heater When it set to ―Without‖, and the ―Ctrl. state‖ Remote With/Without Without will be defaulted to be ―T-water out‖. sensor Air removal On/Off Floor debug On/Off Manual On/Off defrost Force mode Off/Force-cool/Force-heat Gate-Ctrl.
  • Page 57 Unit Control [Notes] ●When ―Remote sensor‖ is set to ―With‖, this setting can be set to ―T-water out‖ or ―T-room‖. When ―Remote sensor‖ is set to ―Without‖, this setting can only be set to ―T-water out‖. ● This setting will be memorized upon power failure. 3.2.4.2 2-Way valve [Operation Instructions] ★...
  • Page 58 Unit Control access to the corresponding setting page. ★2. At the ―Thermostat‖ setting page, it can be set to ―Air‖, ―Without‖ or ―Air + hot water‖. When it is set to ―Air‖ or ―Air + hot water‖, the unit will run based on the mode set by the thermostat; when it is set to ―Without‖, the unit will run based on the mode set by the control panel.
  • Page 59 Unit Control 3-way valve will switch to the water tank, the water pump of the heat pump will always stop but the other thermal will start. Under the ―Heat + Hot water‖ mode, the other thermal only works for space heating, and the electric heater of the water tank works for water heating.
  • Page 60 Unit Control 3.2.4.8 Remote Sensor [Operation Instructions] ★At the commissioning parameter setting page, by touching ―Remote sensor‖, the control panel will access to the corresponding setting page, where it can be set to ―With‖ or ―Without‖. [Notes] ●This setting will be memorized upon power failure. ●Only when ―Remote sensor‖...
  • Page 61 Unit Control segment 77~95℉ 77℉ Duration of each segment Segment time 12~72 hours 12 hours Temperature difference of 2~10℃/ 5℃/ ΔT of segment 1℃ 36~50℉ 41℉ each segment When this setting is finished, by pressing ―Start‖ this setting will be saved and start working, and by ★3.
  • Page 62 Unit Control 3.2.4.13 Gate-Ctrl. [Operation Instructions] ★At the commissioning parameter setting page, by touching ―Gate-Ctrl.‖, the control panel will access to the corresponding setting page. [Notes] ●When ―Gate-Ctrl.‖ has been activated; the display panel will detect the card state. When the card has inserted, the unit will run normally.
  • Page 63 Unit Control [Notes] ● This function is allowed only when the unit has just repowered and not turned on. For the unit which once has been put into operation, this function is unavailable, alerting ―Wrong operation‖. ● This function will not be memorized upon power failure. 3.2.4.17 Parameter Setting [Operation Instructions] ★At the commissioning parameter setting page, by touching ―PARAM.‖, it will access to the pages as...
  • Page 64 Unit Control the figure below. VIEW Page 3.2.5.1 Status Viewing [Operation Instructions] ★1. At the ―VIEW‖ page, by touching ―Status‖, it is able to view status of the unit, as shown in the figure below. Status View Page Viewable Status Full Name Displayed Name Status...
  • Page 65 Unit Control Status of the thermostat Thermostat Off/Cool/Heat Status of other thermal source Other thermal On/Off Status of the 2-way valve 2-way valve On/Off Status of antifreeze HP-Antifree On/Off Status of the door guard Gate-Ctrl. Card in/Card out Status of the 4-way valve 4-way valve On/Off Status of disinfection...
  • Page 66 Unit Control below. Error View Page [Notes] ●The control panel can display real-time errors. And at these pages, all errors will be listed here. ● Each page displays at most 5 pieces of errors. Others can be viewed by touching the page turning keys.
  • Page 67 Unit Control Leaving water temperature sensor error for the Temp-AHLW auxiliary electric heat of the heat pump Entering water temperature sensor error of the No error code but displayed Temp-HEEW plate type heat exchanger of the heat pump at the error view pages. Water tank temperature sensor error HI-pre.
  • Page 68 Unit Control board AC contactor protection or input over-zero error AC contactor Temperature drift protection Temp. drift Sensor connection protection ( the current sensor fails to be connected with the Sensor con. corresponding phase U and or phase V) Communication error between the display ODU Com.
  • Page 69 Unit Control 3.2.6 General Setting [Operation Instructions] ★1. At the menu page, by touching ―GENERAL‖, the control panel will go to the setting page, as shown in the figure below, where it is able to set ―Temp.unit‖, ―On/off memory‖, ―Beeper‖, ―Back light‖, ―Time &...

  • Page 70: Intelligent Control

    Unit Control Time&Data Page ★ 2. The mouse roller can change the date and time value. After it, by touching the ―Save‖ icon, this setting will be saved and directly displayed; while by touching the ―Back‖ icon, this setting will give up and the control panel will directly go back to the ―GENERAL‖...
  • Page 71 Unit Control ★ 2. Open Ewpe Smart APP and click ―Sign up‖ for registration. ★ 3. Except sign in in the prompt interface, you can also enter the homepage and click the profile picture at the left upper corner to sign in.
  • Page 72 Unit Control...
  • Page 73 Unit Control ★ 4. Click "+" at the right upper corner of homepage to add device. After selecting ―AC‖, you can select different reset tools according to actual situation. The APP interface will provide relevant operation instructions for different tools.
  • Page 74 Unit Control Reset the air conditioner (refer to the operation instructions in APP interface) and click ―Next‖ to add home appliance automatically (Wi-Fi password shall be input). Or after setting and energizing the air conditioner, click ―Add appliance manually‖ at the right upper corner to select the wireless network for controlling the device.
  • Page 75 Unit Control After accomplishing device reset and filling correct information, search device and arrange configuration.
  • Page 76 Unit Control 3.3.2 Setting of Main Functions ★ 1. Set mode and temperature.
  • Page 77 Unit Control ★2. Click Func at the left lower corner in device operation interface to enter advanced settings...
  • Page 78 Unit Control 3.3.3 Setting of Other Functions Click the profile picture at the left upper corner of homepage and set each function in the following menu. 3.3.3.1 Home management Click ―Home management‖ to create or manage family. You can also add family members according to the registered account.
  • Page 79 Unit Control 3.3.3.2 Help Click ―Help‖ and view the operation instructions of the APP.
  • Page 80 Unit Control...
  • Page 81 Unit Control 3.3.3.3 Feedback Click ―Feedback‖ to submit feedback.

  • Page 82: Unit Installation

    Installation UNIT INSTALLATION...

  • Page 83: Installation Guides

    1. Installation Guides WARNING! (1) Installation should be performed by GREE appointed servicemen, or improper installation would lead to unusual operation, water leakage, electric shock or fire hazard. (2) The unit should be installed on the foundation which is capable of supporting the unit, or the unit would fall off or even lead to personal injury.

  • Page 84: Installation Position

    Installation 1.1 Installation Position (1) Avoid direct sunshine. (2) Must be installed on a firm and solid support. (3) Ensure the hanger rod, ceiling and building structure have sufficient strength to support the weight of air conditioner unit. (4) Avoid placing the unit under window or between two constructions, hence to prevent normal operating noise from entering the room.

  • Page 85: Filed Supplied Pipes And Valves

    Installation 2 Filed Supplied Pipes and Valves Name Picture Usage Water Filter It is used to remove foreign matters in the waterway. It is used to switch waterways between underfloor system 2-way Valve and the FCU. It is used to switch waterways of hot water inside the 3-way Valve water tank and circulation water inside the main unit.

  • Page 86: Service Tools

    Installation Cut-off Valve It is used to cut off or get through the waterway. 3 Service Tools Name Picture Spanner Screw Driver Pliers Tube Tongs...

  • Page 87: Instalaltion Instructions

    Installation 4 Instalaltion Instructions 4.1 Installation Examples CASE 1: Connecting Under-floor Coil for Heating and Cooling Notes: (1) The two-way valve is very important to prevent dew condensation on the floor and radiator while cooling mode; (2) Type of thermostat and specification should be complied with installation of this manual; (3) The bypass valve must be installed to secure enough water flow rate, and should be installed at the collector.
  • Page 88 Installation Notes: (1) In this case, three-way valve should be installed and should be complied with installation of this manual; (2) Sanitary water tank should be equipped with internal electric heater to secure enough heat energy in the very cold days.

  • Page 89: Pre-Installation

    Installation CASE 3: Connecting Sanitary Water Tank and Heat Emitters for Heating and Cooling Two-way valve is very important to prevent dew condensation on the floor and radiator while cooling mode. 4.2 Pre-Installation (1) Installation of the unit must be in accordance with national and local safety codes. (2) Installation quality will directly affect the normal use of the air conditioner unit.

  • Page 90: Selection Of Installation Location

    Installation 4.3 Selection of Installation Location (1) The outdoor unit must be installed on a firm and solid support. (2) Avoid placing the outdoor unit under window or between two constructions, hence to prevent normal operating noise from entering the room. (3) Air flow at inlet and outlet shall not be blocked.

  • Page 91: Outline Dimension Of Outdoor Unit

    Installation 4.4 Outline Dimension of Outdoor Unit  GRS-CQ4.0Pd/NhG-K, GRS-CQ6.0Pd/NhG-K, GRS-CQ8.0Pd/NhG-K  GRS-CQ10Pd/NhG-K,GRS-CQ12Pd/NhG-K,GRS-CQ14Pd/NhG-K,GRS-CQ16Pd/NhG-K GRS-CQ10Pd/NhG-M,GRS-CQ12Pd/NhG-M,GRS-CQ14Pd/NhG-M,GRS-CQ16Pd/NhG-M...

  • Page 92: Installation Of Monobolc Unit

    Installation 4.5 Installation of Monobolc Unit 4.5.1 Installation Clearance (1) When moving the unit, it is necessary to adopt 2 pieces of long enough rope to hand the unit from 4 directions. Included angle between the rope when hanging and moving must be 40° below to prevent center of the unit from moving.

  • Page 93: Installation Of Hydraulic Unit

    Installation 4.5.3 Usage of rubber rings 1. Take away the original rubber rings; replace the long tail rubber rings of accessory; 2.Wires installed by field supply get through the rubber rings,such as 2-way valve,3-way valve,power cable and so on.Be careful of separating electrical wire and light current wire. 3.Tie the rubber rings after finishing wire connection.
  • Page 94 Installation 4.6.2 Water volume and expansion vessel pressure Note: (a) The expansion vessel is 2 liter and 1.5bar pre-pressurized for 4/6/8kW unit; 3 liter and 1.5bar perpressurized for 10/12/14/16kW unit ; (b) Total water volume of 44 liter is default for 4/6/8kW unit and 66 liter for 10/12/14/16kW unit; if total water is changed because of installation condition, the pre-pressure should be adjusted to secure proper operation.
  • Page 95 Installation Example 2: The unit is installed on the highest spot of the water system and the total water volume is 100L. As the volume of water system is higher than 75L, it is necessary to adjust the pressure of the expansion vessel be lower.

  • Page 96: Installation Of Water Tank

    Installation 4.7 Installation of Water Tank 4.7.1 Installation measure The insulated water tank should be installed and keep levelly within 5m and vertically within 3m from the indoor unit. It can be installed in the room. Standing water tank must be installed vertically with the bottom on the ground, never suspended. Installation place must be firm enough and the water tank should be fixed on the wall with bolts to avoid vibration, as shown in the following figure.
  • Page 97 Installation SXVD200LCJ/A-K SXVD200LCJ2/A-K SXVD300LCJ/A-K SXVD300LCJ2/A-K Model SXVD200LCJ/A-M SXVD200LCJ2/A-M SXVD300LCJ/A-M SXVD300LCJ2/A-M SXVD200LCJ/A-H SXVD200LCJ2/A-H SXVD300LCJ/A-H SXVD300LCJ2/A-H Litre 200L 200L 300L 300L SUS304 Ф22X0.8 coil specification coil length 18.5m 18.5m D(mm) D1(mm) H(mm) 1595 1620 A(mm) B(mm) C(mm) E(mm) F(mm) I(mm) J(mm) 247.5 202.5 K(mm) Outline...
  • Page 98 Installation Net weight Gross weight Joints Dimension Description Joint pipe thread 1/2″Female BSP Hot water outlet of water tank 3/4″Female BSP Circulating water inlet/outlet of water tank 1/2″Female BSP Cooling water inlet of water tank 3/4″Female BSP Pipe joint 4.7.3 Connection of waterway system (1) If connection between water tank and indoor unit should be through the wall, drill a hole φ70 for pass of circulating water pipe.

  • Page 99: Request Of Water Quality

    Installation Notes (a) Distance between indoor unit and water tank should not exceed 5m levelly and 3m vertically. If higher, please contact with us. Water tank on lower and main unit on higher side is recommended. (b) Prepare the materials according to the above joints dimension. If cut-off valve is installed outside the room, PPR pipe is recommended to avoid freeze damage.

  • Page 100: Electric Wiring

    Installation 4.9 Electric Wiring (1) Wiring diagram Wiring diagrams stuck to the unit always prevails.  GRS-CQ4.0Pd/NhG-K,GRS-CQ6.0Pd/NhG-K,GRS-CQ8.0Pd/NhG-K  GRS-CQ10Pd/NhG-K,GRS-CQ12Pd/NhG-K,GRS-CQ14Pd/NhG-K,GRS-CQ16Pd/NhG-K...

  • Page 101: Wiring Of The Terminal Board

    Installation GRS-CQ10Pd/NhG-M,GRS-CQ12Pd/NhG-M,GRS-CQ14Pd/NhG-M,GRS-CQ16Pd/NhG-M 4.10 Wiring of the Terminal Board  GRS-CQ4.0Pd/NhG-K,GRS-CQ6.0Pd/NhG-K,GRS-CQ8.0Pd/NhG-K...
  • Page 102 Installation  GRS-CQ10Pd/NhG-K,GRS-CQ12Pd/NhG-K,GRS-CQ14Pd/NhG-K,GRS-CQ16Pd/NhG-K  GRS-CQ10Pd/NhG-M,GRS-CQ12Pd/NhG-M,GRS-CQ14Pd/NhG-M,GRS-CQ16Pd/NhG-M...

  • Page 103: Wiring Of The 2-Way Valve

    Installation 4.11 Wiring of the 2-Way Valve The 2-way valve 1 is required to control water flow for cooling or heating operation. The role of 2-way valve 1 is to cut off water flow into the underfloor loop when the fan coil unit is equipped for cooling operation.

  • Page 104: Wiring Of Other Thermal

    Installation Follow steps below to wire the 3-way valve: Follow below procedures Step 1 ~ Step 2. Step 1. Uncover front cover of the unit and open the control box. Step 2. Find terminal block and connect wires as below. WARING! The 3-way valve should select water tank loop when electric power is supplied to wire (ON) and wire (N).
  • Page 105 Installation Step 2. Electric wiring work Other thermal L and N are connected to XT3~21, 22. Optional water temperature sensor is conneceted to AP1 CN16. Step 3. Wired controller setting Other thermal should be selected "with" if necessarily from COMMISION → FUNCTION,then set switch on (outdoor)temperature and control logic(1/2/3).

  • Page 106: Wiring Of Optional Electric Heater

    Installation 4.14 Wiring of Optional Electric Heater Optional electric heater is allowed for the equipment and controlled in such a way when outdoor temperature is lower than the set point for startup of the optional electric heater. Step 1. Optional electric heater installation Optional electric heater should be installed with monobloc unit in series.Moreover,an accessory called optional water temperature sensor(5 meter length) shall be installed at the same time.The optional electric heater could be 1 group or 2 group, and only works fo space heating.

  • Page 107: Wiring Of The Gate-Controller

    Installation Step 3. Wired controller setting Optional electric heater should be selected "1/2" group if necessary from COMMISION → FUNCTION,then set switch on (outdoor)temperature and control logic(1/2).. 4.15 Wiring of the Gate-Controller If there is gate control function, installation guide follow as:...

  • Page 108: Wiring Of The Remote Air Temperature Sensor

    Installation 4.16 Wiring of the Remote Air Temperature Sensor Notes: ① Distance between the indoor unit and the remote air temperature sensor should be less than 15m due to length of the connection cable of remote air temperature sensor; ② Height from floor is approximately 1.5m; ③...

  • Page 109: Wiring Of The Thermostat

    Installation 4.17 Wiring of the Thermostat Installation of the thermostat is very similar to that of the remote air temperature sensor. How to Wire Thermostat (1) Uncover the front cover of indoor unit and open the control box ; (2) Identify the power specification of the thermostat,it is 230V, find terminal block XT4 as NO.23~26;...

  • Page 110: Commissioning And Trial Run

    Installation 5 Commissioning and Trial Run 5.1 Check before startup For safety of users and unit, the unit must be started up for check before debugging. The procedures are as below: The following items shall be performed by qualified repair persons. Confirm together with the sales engineer, dealer, installing contractor and customers for the following items finished or to be finished.

  • Page 111: Test Run

    Installation Normal debugging work can‘t be performed unless all installation items are qualified. If there is any problem, it must be solved firstly. The installer will be responsible for all costs for delay of debugging and re-debugging incurred by any problem which is not solved immediately. Submit schedule of amending reports to installer.
  • Page 112 Installation Others: Estimation or suggestion on the general running situation: good, modify Identify the potential problem (nothing means the installation and debugging are in accordance with the requirements.) a. problem of power supply and electric control system: b. problem of load calculation: c.

  • Page 113: Test Operation & Troubleshooting & Maintenance

    Test Operation & Troubleshooting & Maintenance TEST OPERATION & TROUBLESHOOTING & MAINTENANCE...

  • Page 114: Trial Run

    When there is any error, solve it according to the troubleshooting flowchart covered in this manual. However, if the troubleshooting flowchart is still unhelpful, please contact GREE sales agent. 2 Error Code List...
  • Page 115 Test Operation & Troubleshooting & Maintenance Discharge temperature sensor error Disch. sensor Suction temperature sensor error Suction sensor Outdoor fan error Outdoor fan Compressor internal overload protection Comp. overload High pressure protection High pressure Low pressure protection Low pressure High discharge protection Hi-discharge Refrigerant loss protection Refri-loss...
  • Page 116 Test Operation & Troubleshooting & Maintenance Sensing circuit error or current sensor error Current sen. Desynchronizing Desynchronize Compressor stalling Comp. stalling Communication error drive-main com. Radiator or IPM or PFC module overtemperature Overtemp.-mod. Radiator or IPM or PFC module temperature sensor error T-mod.

  • Page 117: Flow Chart Of Troubleshooting

    Test Operation & Troubleshooting & Maintenance 3 Flow Chart of Troubleshooting 3.1 Comp High-pressure Protection E1...

  • Page 118: Comp Low- Pressure Protection E3

    Test Operation & Troubleshooting & Maintenance 3.2 Comp Low- pressure Protection E3...

  • Page 119: Comp Discharge Temp Protection E4

    Test Operation & Troubleshooting & Maintenance 3.3 Comp Discharge Temp Protection E4...

  • Page 120: Overload Protection Of Compressor Or Driver Error

    Test Operation & Troubleshooting & Maintenance 3.4 Overload Protection of Compressor or Driver Error...

  • Page 121: Dc Fan Error Ef

    Test Operation & Troubleshooting & Maintenance 3.5 DC Fan Error EF 3.6 Temperature Sensor Error...

  • Page 122: Communication Malfunction E6

    Test Operation & Troubleshooting & Maintenance 3.7 Communication Malfunction E6...

  • Page 123: Capacity Switch Error (Code:"C5")

    Test Operation & Troubleshooting & Maintenance 3.8 Capacity Switch Error (Code:"C5")

  • Page 124: Diagnosis Of Driving

    Test Operation & Troubleshooting & Maintenance 4 Diagnosis of Driving 4.1 Diagnosis Flowchart of Driving of Single-phase Unit and Three-phase Unit  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")
  • Page 125 Test Operation & Troubleshooting & Maintenance  IPM or PFC Over-temperature Protection(Code:"P8")
  • Page 126 Test Operation & Troubleshooting & Maintenance  DC Busbar Over-voltage Protection(Code:"PH") ; DC Busbar Under-voltage Protection (Code:"PL") Note: three-phase input voltage is in the range from 320VAC to 475VAC.  Drive-to-main-control Communication Error(Code:"P6")  Compressor Startup Failure(code:"LC")
  • Page 127 Test Operation & Troubleshooting & Maintenance...
  • Page 128 Test Operation & Troubleshooting & Maintenance  Compressor Current Protection (Code:"P5"); Compressor Motor Desynchronizing (Code:"H7"); IPM Protection (Code:"H5"); Phase Loss (Code:"LD")

  • Page 129: Daily Maintenance And Repair

    Test Operation & Troubleshooting & Maintenance  Charging Circuit Error(Code:"PU") 5 Daily Maintenance and Repair 5.1 Daily Maintenance In order to avoid damage of unit, all protecting devices in the unit had been set before outgoing, so the user can never adjust or remove them. For the first startup of the unit or next startup of unit after long-period stop (above 1 day) by cutting off the power, please electrify the unit in advance to preheat the unit for more than 8hr Never put sundries on the unit and accessories.

  • Page 130: Troubleshooting

    Test Operation & Troubleshooting & Maintenance 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. 5.2 Troubleshooting Malfunctions Reasons...

  • Page 131: Repair

    Test Operation & Troubleshooting & Maintenance 5.3 Repair 5.3.1 Key Components Picture Name Function It is the heart of the cooling system, mainly used to turn the low-temperature, low-pressure refrigerant vapor to high-temperature high-pressure vapor and then discharge it to Compressor the evaporator.
  • Page 132 Test Operation & Troubleshooting & Maintenance It is the water-refrigerant plate type heat exchanger, used to liquefy the high-temperature high-pressure vapor refrigerant or Plate Heat evaporate the low-temperature low pressure liquid refrigerant. Exchanger Heat of condensation is taken away by circulation water and heat for evaporation is supplied also by circulation water.
  • Page 133 Test Operation & Troubleshooting & Maintenance It is used to prevent the pressure of circulation water from Safety Valve increasing unusually. When the pressure is larger than the set point (0.6MPa), this valve will open to relieve water pressure. It is used to expel air trapped inside the water system to make Exhaust Valve sure normal operation of the system.
  • Page 134 Test Operation & Troubleshooting & Maintenance Note: when vacuuming is finished, pressure inside the unit should be kept lower than 80Pa for at least 30 minutes to make sure there is no leak. Either charging valve 1 or charging valve 2 can be used for vacuuming.
  • Page 135 Test Operation & Troubleshooting & Maintenance...

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