Troubleshooting Flow Charts; Capacitor Charging Fault - Gree Neo GWH09MA-A3DNA3A Installation, Service & Troubleshooting

• Use AC voltmeter to check proper voltage on terminals "L" & "N" on the terminal board. Voltage should
be within 10% of voltage on nameplate.
• Is the reactor (L) correctly connected? Check for damaged reactor.
Turn unit on and wait 1 minute
Use a DC voltmeter to measure the voltage on the
two terminals of the electrolytic capacitor
Is voltage higher than 200 v?
No
Measure the AC voltage between
terminals "L" & "N" on the board XT
power supply
Is voltage within 10% or
nameplate rating
Yes
Power off unit for 20 minutes, then use DV
voltmeter to measure the two leads on the
capacitor until the voltage is < 20v
Check the connection of the
reactor, is the wiring correct?
End Troubleshooting
128
Troubleshooting

Capacitor Charging Fault

Yes
Shut down power and
No
repair power supply to
the correct voltage.
No
Connect
correctly
Yes
Replace AP1
control panel
Faulty AP1
Restart
Is fault
unit
corrected?
No
Power up
Yes
unit, is fault
corrected?
No
Replace the AP1
control panel
Yes