How To Check Simply The Main Part - Gree GWH09MA-K3NNA3F Service Manual

9.2 How to Check simply the main part

(1) PG motor (indoor fan) does not operate (H6)
54
Start
Is the
feedback terminal of PG motor
connected tightly?
yes
no
Is the
control end of PG motor
connected tightly?
yes
no
Stir the blade by
hand to see whether
the blade rotates
smoothly
yes
no
Re-energize to turn on the unit; measure
within 1 min after the louvers are opened
whether the output voltage on control end
for PG motor is more than 50V
yes
no
no
Replace the
control panel
End
no
Insert the feedback
terminal of PG
motor tightly
Malfunction is
yes
eliminated.
no
Insert the control
end of PG motor
tightly
Malfunction is
eliminated.
no
Reinstall the blade and
motor correctly
Malfunction is
yes
eliminated.
yes
Is the motor
started up
no
Replace PG motor
Malfunction is
yes
eliminated
yes
yes
Troubleshooting