Gree GMV6 DC Inverter VRF Units Service Manual
2.61 "F0" Poor Main Board of Outdoor Unit
Fault display: main board of outdoor unit, wired controller of indoor unit and receiver of indoor unit
display
Fault diagnosis:
Check whether the address chip, memory chip and clock chip of the main board of the outdoor unit
can be read properly. If not, the fault is generated.
Possible causes:
■ Abnormal address chip;
■ Abnormal memory chip;
■ Abnormal clock chip.
Troubleshooting:
Yes
No
"F0" Poor Main Bo ard of
the Outdoor Unit
Whether system clock exceptio n
is a lso gen erated (check by using the
commissioning software)?
Replace the CPU
(small b oard)
No
Replace the compre ssor
drive boar d
Address chip and memory
chip are abno rmal
Yes
Replace the main control
board
Is th e p roblem so lved after the
CPU (small b oard) is re placed?
No
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