Gree GMV-224WM/B-X, Service Manual

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GMV5 DC INVERTER VRF UNITS SERVICE MANUAL
95
protection for inverter compressor
driver 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.
Step 8: If the n7 parameter query is selected, the display is as follows. Enter the to-be-confirmed status
of parameter query.
LED1 LED2 LED3
Function
Code
Display Mode
Current
Progress/Mode
Display Mode
Current
Status
Display
Mode
n7 Blinking 00 Blinking 00 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 LED2 LED3
Function
Code
Display Mode Module Address Display Mode Current Status Display Mode
n7
On 01 Blinking 00 Blinking
n7
On 02 Blinking 00 Blinking
n7
On 03 Blinking 00 Blinking
n7
On 04 Blinking 00 Blinking
Select a module for parameter query by pressing "SW1 (UP)" or "SW2 (DOWN)" and then press "SW7".
The display is as follows:
LED1 LED2 LED3
Function
Code
Display Mode Parameter Code Display Mode Current Status Display Mode
n7 On XX On
Parameter
value
Blinking