Gree KW09HQ3D6D Series Service Manual page 50

Service Manual
Malfunction
NO.
Name
Malfunction of
phase current
43 detection
circuit for
compressor
Malfunction of
voltage
44
dropping for
DC bus-bar
Malfunction
of complete
45
units current
detection
46
Installation and Maintenance
Display Method of Indoor Unit
Indicator Display (during
blinking, ON 0.5s and OFF
Dual-8
0.5s)
Code
Display
Operation Cool Heating
Indicator Indicator Indicator
U1
U3
U5
A/C status
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling and drying
operation, compressor will stop
while indoor fan will operate;
During heating operation, the
complete unit will stop
During cooling and drying
operation, the compressor will
stop while indoor fan will
operate;
During heating operating,
the complete unit will stop
operation.
Possible Causes
Replace outdoor control panel AP1
Supply voltage is unstable
Theres circuit malfunction on
outdoor units control panel AP1,
please replace the outdoor units
control panel AP1.
47