Gree VERSATI III Series Betriebsanleitung
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
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
7
High pressure protection
High pressure
E1
Test Operation & Troubleshooting & Maintenance
Page 2
No.
Full Name
Displayed Name
Error Code
8
Low pressure protection
Low pressure
E3
9
High discharge protection
Hi-discharge
E4
10
Refrigerant loss protection
Refri-loss
P2
11
Heat pump-water pump protection
HP-pump
E0
12
Solar kit-water pump protection
SL-pump
EL
13
Incorrect capacity DIP switch setting
Capacity DIP
c5
14
Communication error between indoor and outdoor unit
ODU-IDU Com.
E6
15
Drive communication error
Drive com.
16
High pressure sensor error
HI-pre. sens.
Fc
17
Enthalpy-enhancing sensor error
En. senser
F8
18
Low pressure sensor error
LOW-pre. Sens.
dL
19
Heat exchanger-leaving water temperature sensor error
Temp-HELW
F9
20
Auxiliary heater-leaving water temperature sensor error
Temp-AHLW
dH
21
Heat exchanger-entering water temperature sensor error
Temp-HEEW
22
Water tank water temperature sensor 1 error
Tank sens. 1
FE
23
Water tank water temperature sensor 2 error
Tank sens. 2
24
Solar kit-entering water temp sensor
T-SL water out
25
Solar kit-leaving water temp sensor
T-SL water in
FH
26
Solar kit- temp sensor
T-Solar pannel
FF
27
Remote room sensor 1
T-Remote Air1
F3
28
Remote room sensor 2
T-Remote Air2
29
Heat pump-water flow switch
HP-Water SW
Ec
30
Solar kit-water flow switch
SL-Water SW
F2
31
Welding protection of the auxiliary heater 1
Auxi. heater 1
EH
32
Welding protection of the auxiliary heater 2
Auxi. heater 2
EH
33
Welding protection of the water tank heater
Auxi. -WTH
EH
34
Under-voltage DC bus or voltage drop error
DC under-vol.
PL
35
Over-voltage DC bus
DC over-vol.
PH
36
AC current protection (input side)
AC curr. pro.
PA
37
IPM defective
IPM defective
H5
38
PFC defective
FPC defective
Hc
39
Start failure
Start failure
Lc
40
Phase loss
Phase loss
LD
41
Drive module resetting
Driver reset
P6
42
Compressor over-current
Com. over-cur.
P0
43
Overspeed
Overspeed
P5
44
Sensing circuit error or current sensor error
Current sen.
LF
45
Desynchronizing
Desynchronize
Pc
46
Compressor stalling
Comp. stalling
H7
47
Communication error
drive-main com.
LE
Test Operation & Troubleshooting & Maintenance
Page 3
No.
Full Name
Displayed Name
Error Code
48
Radiator or IPM or PFC module overtemperature
Overtemp.-mod.
P8
49
Radiator or IPM or PFC module temperature sensor error
T-mod. sensor
P7
50
Charging circuit error
Charge circuit
Pu
51
Incorrect AC voltage input
AC voltage
PP
52
Drive board temperature sensor error
Temp-driver
PF
53
AC contactor protection or input zero crossing error
AC contactor
P9
54
Temperature drift protection
Temp. drift
PE
55
Current sensor connection protection (current sensor not
connected to phase U/V)
Sensor con.
PD
56
Communication error to the outdoor unit
ODU Com.
E6
57
Communication error to the indoor unit
IDU Com.
E6
58
Communication error to the drive
Driver Com.
E6
59
Solar kit-superheating
Solarsuperheat
F6
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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