Gree GMV5 Series Service Manual page 98

protection for inverter compressor
driver
Inverter compressor driver IPM
P6 module protection
Inverter compressor startup failure
PJ
Inverter compressor phase lack
PE
protection
Inverter compressor driver module
P3
reset
Inverter compressor over-current
P5
protection
Current detection circuit failure of
PC
inverter compressor driver
The display is as follows:
LED1
Function Display
Code 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.
Step 8: If the n7 parameter query is selected, the display is as follows. Enter the to-be-confirmed status
of parameter query.
LED1
Function
Display Mode
Code
n7 Blinking
On the master unit, press "SW7" to confirm parameter query and enter the module confirmation status
for parameter query. The display is as follows:
LED1
Function
Display Mode
Code
n7
n7
n7
n7
Select a module for parameter query by pressing "SW1 (UP)" or "SW2 (DOWN)" and then press "SW7".
The display is as follows:
LED1
Function
Display Mode
Code
n7
GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
LED2
Fault
Sequence
01
02
03
04
05
Current
Progress/Mode
Module Address
On 01
On 02
On 03
On 04
Parameter Code
On XX
protection
Communication failure between the
C3 master 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
Display
Current Status
Mode
On
On
Historical
On fault/module
address
On
On
LED2
Display Mode
00 Blinking
LED2
Display Mode Current Status Display Mode
Blinking
Blinking
Blinking
Blinking
LED2
Display Mode
On
95
LED3
Display Mode
Displayed alternately
Displayed alternately
Displayed alternately
Displayed alternately
Displayed alternately
LED3
Current Display
Status Mode
00 Blinking
LED3
00 Blinking
00 Blinking
00 Blinking
00 Blinking
LED3
Current Status Display Mode
Parameter
Blinking
value