Gree GWH09AKCXD-K6DNA1A Service Manual page 49

●Outdoor unit:
1.Capacity charging malfunction (outdoor unit malfunction) (AP1 below is control board of outdoor unit)
Main detection point:
● Detect if the voltage of L and N terminal of wiring board is between 210AC-240AC by alternating voltage meter;
● Is reactor (L) well connected? Is connection wire loosened or pull-out? Is reactor (L) damaged?
Malfunction diagnosis process:
Turn on the unit
and wait 1 minute
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor
Voltage higher than
200V?
Measure the AC voltage
between
terminal L and and N on wiring
board XT(power supply)
Voltage within
210VAC~250VAC?
Shut down the power and wait 20 minutes;
or use DC voltmeter to measure the
voltage on the two ends of capacitor
(test3), until the voltage is lower than 20V
Check the
connection of reactor
(Lin the Electrical Wiring
Diagram)
If the wiring of
reactor Lis normal?
Replace the
control
panel AP1
46
Fault with the
voltage testing
Y
circuit on control
panel AP1
Shut down the
power and repair
N
the power supply to
restore the range
210VAC~250VAC
Y
Connect the
reactor Laccording
N
to Electrical Wiring
Diagram correctly
Y
End
Replace the
control panel
AP1
power on and
If the fault is
restart the unit eliminated?
N
Re-energize
If the fault is
and turn on
eliminated?
the unit
N
Service Manual
Y
Y
Installation and Maintenance