Gree GWH12QB-K3DNA6O

86
Installation and Maintenance
Service Manual
5. Abnormal Sound and Vibration
Possible causes Discriminating method (air conditioner status) Troubleshooting
When turn on or turn off the unit,
the panel and other parts will
expand and theres abnormal
sound
Theres the sound of "PAPA"
Normal phenomenon. Abnormal sound will
disappear after a few minutes.
When turn on or turn off the
unit, theres abnormal sound due
to ow of refrigerant inside air
conditioner
Water-running sound can be heard
Normal phenomenon. Abnormal sound will
disappear after a few minutes.
Foreign objects inside the indoor
unit or therere parts touching
together inside the indoor unit
Theres abnormal sound fro indoor unit
Remove foreign objects. Adjust all parts position
of indoor unit, tighten screws and stick damping
plaster between connected parts
Foreign objects inside the outdoor
unit or therere parts touching
together inside the outdoor unit
Theres abnormal sound fro outdoor unit
Remove foreign objects. Adjust all parts position
of outdoor unit, tighten screws and stick
damping plaster between connected parts
Short circuit inside the magnetic
coil
During heating, the way valve has abnormal
electromagnetic sound
Replace magnetic coil
Abnormal shake of compressor Outdoor unit gives out abnormal sound
Adjust the support foot mat of compressor,
tighten the bolts
Abnormal sound inside the
compressor
Abnormal sound inside the compressor
If add too much refrigerant during maintenance,
please reduce refrigerant properly. Replace
compressor for other circumstances.
4. Air Conditioner is Leaking
Possible causes Discriminating method (air conditioner status) Troubleshooting
Drain pipe is blocked Water leaking from indoor unit
Eliminate the foreign objects inside the drain
pipe
Drain pipe is broken Water leaking from drain pipe Replace drain pipe
Wrapping is not tight
Water leaking from the pipe connection place of
indoor unit
Wrap it again and bundle it tightly