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Test Operation & Troubleshooting & Maintenance

1 Trial Run

1�1 Check for Wiring
WARNING!

Do not check for the power supply unless proper checkout equipment has prepared and preventive

measures have been taken, otherwise it would lead to severe injury.

◆

Are sizes of connection lines and the air switch proper?

◆

Does wiring comply with relative standards and electric codes?

◆

Is there any incorrect wiring?

◆

Does each contact work properly?

◆

Is the power supply and insulation proper?

◆

Are initial set points of control and protective elements satisfied?

1�2 Check for the Water System

◆

Are water inlet and outlet directions correct?

◆

Is the water piping cleaned? Are there foreign matters at the pipe joints? Is the water quality satisfied?

◆

Is insulation of water pipes in good condition?

◆

Does exhaust valve of the water system work properly?

1�3 Check for the Communication System

When the unit is powered on, check for the communication system, including: communication between AP1

and AP2, between the wired controller and the main board. When there is unusual communication, this error will
be displayed at the wired controller. Then, check out the cause according to the displayed error. See the figure
below for wiring of the communication system.

CN8

CN7

CN6

CN5

AP1

AP2

Wired controller

CN5(Red)

Long-distance

Minitor PC(BMS)

CN4(White)

1�4 Trial Run

Start the unit when there is no any problem for wiring and piping. After startup, check for the electrostatic

expansion valve, water pump, fan, and compressor to see if they work normally. 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

No�

Full Name

Displayed Name

Error Code

1

Ambient temperature sensor error

Ambient sensor

F4

2

Defrost temperature sensor error

Defro. sensor

d6

3

Discharge temperature sensor error

Disch. sensor

F7

4

Suction temperature sensor error

Suction sensor

F5

5

Outdoor fan error

Outdoor fan

EF

6

Compressor internal overload protection

Comp. overload

H3

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Содержание Versati II Series

Страница 1: ...Change for life GREE ELECTRIC APPLIANCES INC OF ZHUHAI Air to water Heat Pump Monobloc Versati Test Operation Troubleshooting Maintenance ...

Страница 2: ...pressure Protection E3 4 3 3 Comp Discharge Temp Protection E4 4 3 4 Overload Protection of Compressor or Driver Error 5 3 5 DC Fan Error EF 5 3 6 Temperature Sensor Error 6 3 7 Communication Malfunction E6 6 3 8 Capacity Switch Error Code C5 7 4 Diagnosis of Driving 7 4 1 Diagnosis Flowchart of Driving of Single phase Unit and Three phase Unit 7 5 Daily Maintenance and Repair 11 5 1 Daily Mainten...

Страница 3: ...ng communication between AP1 and AP2 between the wired controller and the main board When there is unusual communication this error will be displayed at the wired controller Then check out the cause according to the displayed error See the figure below for wiring of the communication system CN8 CN7 CN6 CN5 AP1 AP2 Wired controller CN5 Red Long distance Minitor PC BMS CN4 White 1 4 Trial Run Start ...

Страница 4: ...nk sens 2 25 Solar kit entering water temp sensor T SL water out 26 Solar kit leaving water temp sensor T SL water in FH 27 Solar kit temp sensor T Solar pannel FF 28 Swimming pool entering water temp sensor T Swimming in 29 Swimming pool leaving water temp sensor T Swimming out 30 Swimming pool water temp sensor T Swimming 31 Remote room sensor 1 T Remote Air1 F3 32 Remote room sensor 2 T Remote ...

Страница 5: ... U V Sensor con PD 61 Communication error to the outdoor unit ODU Com E6 62 Communication error to the indoor unit IDU Com E6 63 Communication error to the drive Driver Com E6 64 Solar kit superheating Solarsuperheat F6 3 Flow Chart Of Troubleshooting 3 1 Comp High pressure Protection E1 Comp High pressure protection E1 Check if the High pressure switch is broken Replace the High pressure switch C...

Страница 6: ...o 3 3 Comp Discharge Temp Protection E4 Comp Discharge Temp Protection E4 Measure if the exhaust temperature of compressor reaches120 Replace the corresponding exhaust temperature sensor Check if the the electronic expansion valve is blocked Check if the system has leaked The refrigerant of the system is not enough and add refrigerant according to the required volume Repair the leakage of system p...

Страница 7: ... the voltage is normal Check if the refrigerant of the system is excessive Contact the power supply company Recharge suitable amount of the refrigerant yes no no yes no yes yes 3 5 DC Fan Error EF EF is displayed on the wired controller Is the motor wire phase sequence right Adjust the motor wire Is the Fan wire terminal loose Replace the mainboard AP2 Does it work normally Work Normally yes no ye...

Страница 8: ... sensor no Replace the mainboard of the AP1 or AP2 3 7 Communication Malfunction E6 Communication Malfunction E6 Check if the communication line of the unit is connected Check the orientation of plug and socket Measure if the Communication line is through yes no Replace the communication line no Check if the communication line of the unit is connected correctly yes Check the orientation of plug an...

Страница 9: ...unit is connected correctly yes yes no Communication Malfunction E6 Communication Malfunction E6 Communication Malfunction E6 Communication Malfunction E6 Communication Malfunction E6 4 Diagnosis of Driving 4 1 Diagnosis Flowchart of Driving of Single phase Unit and Three phase Unit 4 1 1 Drive Module Reset Code P0 IPM or PFC Temperature Sensor Error Code P7 AC Current Protection Input Side Code P...

Страница 10: ...splayed in the mainboard 88 indicating lamp Replace the driver board AP4 Work Normally 4 1 2 IPM or PFC Over temperature Protection Code P8 Is the IPM or PFC module of the driver board AP4 tightened Replace the driver board AP4 Overtemp mod is displayed on the wired controller P8 is displayed in the mainboard 88 Indicating Lamp Work Normally Tighten the IPM or PFC module ...

Страница 11: ... or PL is displayed in the mainboard 88 Indicating Lamp Work Normally Please cut off the power and notify the power company Replace the mainboard Does it work normally Note three phase input voltage is in the range from 320VAC to 475VAC 4 1 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 ...

Страница 12: ...ressor Motor Desynchronizing Code H7 IPM Protection Code H5 Phase Loss Code LD Start failure is displayed on the wired controller LC is displayed in the mainboard 88 indicating lamp Replace the mainboard Does it work Normally Replace the mainboard Does it work Normally Replace the mainboard Does it work Normally Replace the mainboard Does it work Normally LC is displayed in the mainboard 88 indica...

Страница 13: ...oid protection or damage of unit caused by blockage of water system clean the filter in water system periodically and frequently check water replenishing device In order to ensure anti freezing protection never cut off the power if ambient temp is below zero in winter In order to avoid frost crack of the unit water in the unit and pipeline system not used for a long period should be drained In add...

Страница 14: ...stem is blocked or there is air in it Check water pump valve and pipeline Clean water filter or evacuate Adjust the load or add accumulating devices The unit does not heat although compressor is running Leakage of refrigerant Malfunction of compressor Repair by leakage detection and add refrigerant Replace compressor Poor efficiency of hot water heating Poor heat insulation of water system Poor he...

Страница 15: ...rature high pressure vapor refrigerant or evaporate the low temperature low pressure liquid refrigerant Heat of condensation is taken away by circulation water and heat for evaporation is supplied also by circulation water Water Pump It is the power equipment for water circulation Expansion Tank It is used to keep stable pressure of the water system The tank is charged with a certain volume of nit...

Страница 16: ...ating performance of the system Safety Valve It is used to prevent the pressure of circulation water from increasing unusually When the pressure is larger than the set point 0 6MPa this valve will open to relieve water pressure Exhaust Valve It is used to expel air trapped inside the water system to make sure normal operation of the system It is usually installed at the highest point of the system...

Страница 17: ...o vacuum the unit Pressure Meter Vacuum pump Connection Pipe 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 3 Charging when vacuuming is finished and it is certain that there is no leak charging can be done Be sure to charge the specif...

Страница 18: ......

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