Gree VERSATI III Series Istruzioni operative

Test Operation & Troubleshooting & Maintenance

TEST OPERATION &

TROUBLESHOOTING & MAINTENANCE

VERSATI ⅢAir To Water Heat Pump

Test Operation & Troubleshooting & Maintenance

Page 1

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.

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

Ambient temperature sensor error

Ambient sensor

Defrost temperature sensor error

Defro. sensor

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

Test Operation & Troubleshooting & Maintenance

Page 2

No.

Full Name

Displayed Name

Error Code

Low pressure protection

Low pressure

High discharge protection

Hi-discharge

Refrigerant loss protection

Refri-loss

Heat pump-water pump protection

HP-pump

Solar kit-water pump protection

SL-pump

Incorrect capacity DIP switch setting

Capacity DIP

Communication error between indoor and outdoor unit

ODU-IDU Com.

Drive communication error

Drive com.

High pressure sensor error

HI-pre. sens.

Enthalpy-enhancing sensor error

En. senser

Low pressure sensor error

LOW-pre. Sens.

Heat exchanger-leaving water temperature sensor error

Temp-HELW

Auxiliary heater-leaving water temperature sensor error

Temp-AHLW

Heat exchanger-entering water temperature sensor error

Temp-HEEW

Water tank water temperature sensor 1 error

Tank sens. 1

Water tank water temperature sensor 2 error

Tank sens. 2

Solar kit-entering water temp sensor

T-SL water out

Solar kit-leaving water temp sensor

T-SL water in

Solar kit- temp sensor

T-Solar pannel

Remote room sensor 1

T-Remote Air1

Remote room sensor 2

T-Remote Air2

Heat pump-water flow switch

HP-Water SW

Solar kit-water flow switch

SL-Water SW

Welding protection of the auxiliary heater 1

Auxi. heater 1

Welding protection of the auxiliary heater 2

Auxi. heater 2

Welding protection of the water tank heater

Auxi. -WTH

Under-voltage DC bus or voltage drop error

DC under-vol.

Over-voltage DC bus

DC over-vol.

AC current protection (input side)

AC curr. pro.

IPM defective

PFC defective

FPC defective

Start failure

Phase loss

Drive module resetting

Driver reset

Compressor over-current

Com. over-cur.

Overspeed

Sensing circuit error or current sensor error

Current sen.

Desynchronizing

Desynchronize

Compressor stalling

Comp. stalling

Communication error

drive-main com.

Test Operation & Troubleshooting & Maintenance

Page 3

No.

Full Name

Displayed Name

Error Code

Radiator or IPM or PFC module overtemperature

Overtemp.-mod.

Radiator or IPM or PFC module temperature sensor error

T-mod. sensor

Charging circuit error

Charge circuit

Incorrect AC voltage input

AC voltage

Drive board temperature sensor error

Temp-driver

AC contactor protection or input zero crossing error

AC contactor

Temperature drift protection

Temp. drift

Current sensor connection protection (current sensor not

connected to phase U/V)

Sensor con.

Communication error to the outdoor unit

ODU Com.

Communication error to the indoor unit

IDU Com.

Communication error to the drive

Driver Com.

Solar kit-superheating

Solarsuperheat

Test Operation & Troubleshooting & Maintenance

Page 4

3 Flow Chart of Troubleshooting

3.1 Comp High-pressure Protection E1

Test Operation & Troubleshooting & Maintenance

Page 5

3.2 Comp Low- pressure Protection E3

3.3 Comp Discharge Temp Protection E4

Test Operation & Troubleshooting & Maintenance

Page 6

3.4 Overload Protection of Compressor or Driver Error

3.5 DC Fan Error EF

Test Operation & Troubleshooting & Maintenance

Page 7

3.6 Temperature Sensor Error

3.7 Communication Malfunction E6

Test Operation & Troubleshooting & Maintenance

Page 8

3.8 Capacity Switch Error (Code:"C5")

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")

Test Operation & Troubleshooting & Maintenance

Page 9

IPM or PFC Over-temperature Protection(Code:"P8")

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.

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