Gree GUD24W2/D-D(U) - Page 48

GREE DC INVERTER HEAT PUMP CONDENSING UNIT SERVICE MANUAL
45
Troubleshooting
：
Malfunction of
discharge
temperature
sensor
Check if the
control wire of outdoor fan motor is
connected on the outdoor
mainboard correctly
Replace the
outdoor fan motor and then
restart the unit to see if there still
is malfunction of outdoor fan
motor
Correctly connect the
control wire of fan motor
on the mainboard
Operate the unit with
the new motor
Replace the
outdoor
mainboard
Yes
No
No
Yes
Malfunction of
discharge
temperature
sensor
Check if the
control wire of outdoor fan motor is
connected on the outdoor
mainboard correctly
Replace the
outdoor fan motor and then
restart the unit to see if there still
is malfunction of outdoor fan
motor
Correctly connect the
control wire of fan motor
on the mainboard
Operate the unit with
the new motor
Replace the
outdoor
mainboard
Yes
No
No
Yes