Gree GMV-VQ680WM/C-X Service Manual page 69

Gree
On the master unit, press and hold the SW2 down button for over 5 seconds. The master unit
displays the current function setting status, and other modules display based on their current status.
Press the SW1 up button and the SW2 down button on the master unit to select the corresponding query.
The default selection is A6.
In function query status, if there are two levels of menus, you can press the SW4 back button to
return to the previous level. Press the SW4 query button again to exit query status.
In function query status, if you do not press any button on the master unit in 5 minutes, the system
will automatically exit the current screen and the unit will resume displaying the current status.
4.1.2.4.1 n6 Fault Query
Press the SW1 up button and the SW2 down button to select fault query. The master unit displays
as follows:
LED1
Function Code Display status
n6
Press the SW3 confirm button on the master unit to confirm the selection.
Introduction:
This function is used to query historical faults in the system. Up to five historical faults can be stored
in the order of time.
Operations:
In fault query status, press the SW1 up button and the SW2 down button. LED3 circularly displays
the code and address of the faulty module in history in the order of time (at an interval of 1s), and LED2
displays the fault sequence number. If there is no historical fault, LED2 and LED3 display "00" by default.
Up to five latest historical faults can be queried. Faults that can be stored and queried are as follows:
1 High pressure protection
2 Low pressure protection
3 Lack-of-refrigerant protection
4 Air discharge low temperature protection
5 Over low pressure ratio protection
6 Over high pressure ratio protection
7 Four-way valve air backflow protection
8 High pressure low protection
9 High temperature protection for compressor 1
10 High temperature protection for compressor 2
11 Compressor 2 over-current protection
Shell roof high temperature protection for
12
Shell roof high temperature protection for
13
Current
process/mode
Blinks 00
compressor 1
compressor 2
GMV6 HR DC Inverter VRF Units Service Manual
LED2
Display status Current status
Blinks
20 Inverter compressor over-current protection
Current detection circuit fault of the inverter
21
Loss of synchronization protection for the inverter
22
Communication fault between the primary
23
controller and inverter compressor driver
Over temperature protection for the inverter
24
compressor driver module.
Temperature sensor fault of the inverter
25
compressor driver module.
Charging loop fault of the inverter compressor
26
Under voltage protection for DC bus of the
27
inverter outdoor fan driver
Over voltage protection for DC bus of the inverter
28
IPM module protection for the inverter outdoor
29
30 Inverter outdoor fan startup failure.
31 Inverter outdoor fan phase loss protection.
32 Inverter outdoor fan driver module reset.
67
LED3
Display status
00 Blinks
compressor driver
compressor
driver.
outdoor fan driver
fan driver.