Gree GWH09ACC-K6DNA1F/I Service Manual page 72

●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:
terminal L and and N on wiring
Shut down the power and wait 20 minutes;
or use DC voltmeter to measure the voltage
on the two ends of capacitor (test3),
(Lin the Electrical Wiring
Installation and Maintenance
Turn on the unit
and wait 1 minute
Use DC voltmeter
to measure the
voltage on the two
ends of electrolytic
capacitor
Y
Voltage higher than
200V?
Measure the AC voltage
between
board XT(power supply)
Voltage within
N
210VAC~250VAC?
Y
until the voltage is lower than 20V
Check the
connection of reactor
Diagram)
If the wiring of
N
reactor Lis normal?
Y
Replace the control
panel AP1
End
Fault with the
Replace the
voltage testing
control
circuit on
panel AP1
control panel AP1
Shut down the
power on and
power and repair
restart the unit
the power supply to
restore the range
210VAC~250VAC
Connect the reactor
Re-energize and
Laccording to Elec-
turn on the unit
trical Wiring Diagr-
am correctly
N
If the fault is
eliminated?
N
If the fault is
eliminated?
Y
Y
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