Gree GUHD18ND3FO - Troubleshooting Flow Chart of Drive Malfunction

U-Match Series DC Inverter Service Manual
105
 E8 Malfunction of Indoor Fan Motor
Malfunction of
indoor fan motor
Check if the
control wire of indoor fan motor is
connected on the outdoor
mainboard correctly
Replace
the indoor fan motor and then
restart the unit to see if there still
is malfunction of indoor
fan motor
Correctly connect the
control wire of fan motor
on the mainboard
Operate the unit with
the new motor
Replace the
indoor
mainboard
Yes
No
No
Yes
2.2 Troubleshooting Flow Chart of Drive Malfunction
Note: For Outdoor Unit Drive (Inverter) by Single-phase Motor
 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)
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