Gree GMV-400WM/E-X - Page 95

GREE GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
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the historical fault code and module address in an interval of one second in the sequence of fault records.
LED2 displays the fault sequence number. If there not historical faults, LED2 and LED3 display “00” by
default. Up to five historical faults can be queried. The faults that can be queried are as follows:
Code
Code
E1
High-pressure protection
P9
Inverter compressor out-of-step protection
E3
Low-pressure protection
C2
Communication failure between the master
unit and inverter compressor driver
U4
Lack of refrigerant protection
P8
Over-high temperature protection for
inverter compressor driver module
E2
Discharge low-temperature protection
P7
Temperature sensor failure of inverter
compressor driver module
J9
Over-low pressure ratio protection
PF
Charge circuit failure of inverter compressor
driver
J8
Over-high pressure ratio protection
HL
DC bus line over-low voltage protection for
inverter outdoor fan driver
J7
Gas-mixing protection of 4-way valve
HH
DC bus line over-high voltage protection for
inverter outdoor fan driver
E5
High-temperature protection of compressor 1
H6
Inverter outdoor fan driver IPM module
protection
E6
High-temperature protection of compressor 2
HJ
Inverter outdoor fan startup failure
J2
Over-current protection of compressor 2
HE
Inverter outdoor fan phase lack protection
EU
Top high-temperature protection of compressor 1
H3
Inverter outdoor fan driver module reset
Eb
Top high-temperature protection of compressor 2
H5
Inverter outdoor fan over-current protection
PL
DC bus line over-low voltage protection for
inverter compressor driver
HC
Current detection circuit failure of inverter
outdoor fan driver
PH
DC bus line over-high voltage protection for
inverter compressor driver
H9
Inverter outdoor fan out-of-step protection
P6
Inverter compressor driver IPM module
protection
C3
Communication failure between the master
unit and inverter outdoor fan driver
PJ
Inverter compressor startup failure
H8
Over-high temperature protection for
inverter outdoor fan driver module
PE
Inverter compressor phase lack protection
H7
Temperature sensor failure of inverter
outdoor fan driver module
P3
Inverter compressor driver module reset
P5
Inverter compressor over-current protection
PC
Current detection circuit failure of inverter
compressor driver
The display is as follows:
LED1
LED2
LED3
Function Code
Display Mode
Fault Sequence
Display Mode
Current Status
Display Mode
n6
On
01
On
Historical fault/module
address
Displayed alternately
n6
On
02
On
Displayed alternately
n6
On
03
On
Displayed alternately
n6
On
04
On
Displayed alternately
n6
On
05
On
Displayed alternately
"01-05" indicates the fault sequence from the earliest to the latest.
If there are less than five historical faults, LED2 and LED3 display “00” indicating there are no more
historical faults after the last fault is displayed.
In fault query status, press and hold "SW7" for five seconds to clear all historical faults of the ODU.