Gree GWC09QB-K3DNA1B User Manual

49
Installation and Maintenance
Service Manual
Troubleshooting
for U8 malfunction
Re-energize1
minute after
de-erergization
U8 is still
displayed
The unit returns to normal.
Conclusion:U8 is displayed due
to instant energization afte de-
energization while the capacitor
discharges slowly.
The zero-cross detection
circuit of the mainboard is
defined abnormal.Replace
the mainboard with the same
model
End
No
Yes
6. Malfunction of Zero-crossing Inspection Circuit Malfunction of the IDU Fan Motor U8

Gree GWC09QB-K3DNA1B Specifications

General

Brand	Gree
Model	GWC09QB-K3DNA1B
Category	Air Conditioner
Language	English