Gree GWH09ACC-K6DNA1F/I Service Manual page 67

●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
voltage on the two
ends of electrolytic
Voltage higher than
Measure the AC voltage
terminal L and and N on wiring
board XT(power supply)
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
connection of reactor
(Lin the Electrical Wiring
reactor Lis normal?
Replace the control
64
to measure the
capacitor
Y
200V?
between
Voltage within
N
Y
Check the
Diagram)
Connect the reactor
Laccording to Elec-
If the wiring of
N
trical Wiring Diagr-
Y
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
Re-energize and
turn on the unit
am correctly
N
If the fault is
eliminated?
N
If the fault is
eliminated?
Installation and Maintenance
Y
Y