Gree GWH18YD-K6DNA2A Service Manual page 59

Malfunction indicator of outdoor unit
check points:
N
compressor connected correctly? Is the
connection made in clockwise
N
Connect the
wires correctly
Y
56
Out of step occurs once
the unit is powered on
Is stop time of the
compressor longer than
3 minutes?
Y
Are the wires for the
direction?
Y
Replace the control
panel AP1
If the fault is eliminated?
N
Replace the
compressor
End
Fault with outdoor unit)
Out of step occurs in
operation
Is the outdoor fan working
normally?
Y
Is heat dissipation of the unit
N
Is the input voltage normal?
abnormal?
Y
Is the
charge volume of refrigerant
too much?
N
Replace the control
panel AP1
If the fault is eliminated?
N
Replace the
compressor
End
Check if the fan terminal
N
OFAN is connected correctly
Improve the heat dissipation
of the unit(eg. clean heat
Y
exchanger, improve
ventilation, etc.)
Start the unit after input
N
volatge is normal
Charge refrigerant according
Y
to the service manual
Y
Installation and Maintenance
Service Manual
Replace the fan
capacitor C1
Replace the
outdoor fan