Gree GMV5E Series Service Manual page 95

GREE
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
E1 High-pressure protection
E3 Low-pressure protection
U4 Lack of refrigerant protection
E2 Discharge low-temperature protection
J9 Over-low pressure ratio protection
J8 Over-high pressure ratio protection
J7 Gas-mixing protection of 4-way valve
E5 High-temperature protection of compressor 1
E6 High-temperature protection of compressor 2
J2 Over-current protection of compressor 2
EU Top high-temperature protection of compressor 1
Eb Top high-temperature protection of compressor 2
DC bus line over-low voltage protection for
PL
inverter compressor driver
DC bus line over-high voltage protection for
PH
inverter compressor driver
Inverter compressor driver IPM module
P6
protection
PJ Inverter compressor startup failure
PE Inverter compressor phase lack protection
P3 Inverter compressor driver module reset
P5 Inverter compressor over-current protection
Current detection circuit failure of inverter
PC
compressor driver
The display is as follows:
LED1
Function Code Display Mode Fault Sequence Display Mode
n6 On
n6 On
n6 On
n6 On
n6 On
"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.
GMV5E DC INVERTER VRF UNITS SERVICE MANUAL
LED2
01 On
02 On
03 On
04 On
05 On
91
Code
P9 Inverter compressor out-of-step protection
Communication failure between the master
C2
unit and inverter compressor driver
Over-high temperature protection for
P8
inverter compressor driver module
Temperature sensor failure of inverter
P7
compressor driver module
Charge circuit failure of inverter compressor
PF
driver
DC bus line over-low voltage protection for
HL
inverter outdoor fan driver
DC bus line over-high voltage protection for
HH
inverter outdoor fan driver
Inverter outdoor fan driver IPM module
H6
protection
HJ Inverter outdoor fan startup failure
HE Inverter outdoor fan phase lack protection
H3 Inverter outdoor fan driver module reset
H5 Inverter outdoor fan over-current protection
Current detection circuit failure of inverter
HC
outdoor fan driver
H9 Inverter outdoor fan out-of-step protection
Communication failure between the master
C3
unit and inverter outdoor fan driver
Over-high temperature protection for
H8
inverter outdoor fan driver module
Temperature sensor failure of inverter
H7
outdoor fan driver module
LED3
Current Status
Historical fault/module
address
Display Mode
Displayed alternately
Displayed alternately
Displayed alternately
Displayed alternately
Displayed alternately