Troubleshooting Flow Chart Of Drive Malfunction - Gree GUHD09NK3FO Service Manual

E8 Malfunction of Indoor Fan Motor

2.2 Troubleshooting Flow Chart of Drive Malfunction

Note: For Outdoor Unit Drive (Inverter) by Single-phase Motor
(Applicable to GUHD09NK3FO/GUHD12NK3FO/GUHD18NK3FO/GUHD24NK3FO/ GUHD30NK3FO/
GUHD36NK3FO/ GUHD42NK3FO/ GUHD48NK3FO)
P0 Drive module reset
P7 IPM or PFC temperature sensor error
PA AC current protection (input side)
PC Current sense circuit error
Hc PFC protection(48K only)
Malfunction of
indoor fan motor
Check if the
control wire of indoor fan motor is
connected on the outdoor
mainboard correctly
Yes
Replace
the indoor fan motor and then
restart the unit to see if there still
is malfunction of indoor
fan motor
Yes
Replace the
indoor
mainboard
P0 P7 PA Hc or
PC is displayed on
the wired controller
P0 P7 PA Hc or
PC is displayedin the
mainboard 88
Indicating Lamp
Replace the
mainboard
Work Normally
Correctly connect the
No
control wire of fan motor
on the mainboard
Operate the unit with
No
the new motor
U-Match Series DC
Inverter Service Manual
89