Gree GWH09AOCXD-K6DNA1B Service Manual page 47

3. Troubleshooting of jumper cap malfunction C5
Troubleshooting of PG (indoor fan) zero-crossing detection circuit malfunction U8:
44
Troubleshooting for
C5 malfunction
Is
there jumper cap on the
controller
no
no
Is the
jumper cap inserted correctly
and tightly
yes
no
Replace the jumper cap
with the same model
Is malfunction
eliminated
no
Replace the control board
End
Troubleshooting for
U8 malfunction
Replace the control board
with the same model
yes
Assemble the jumper cap
with the same model
Is malfunction
eliminated
no
Insert the jumper
cap tightly
Is malfunction
eliminated
yes
End
Service Manual
yes
yes
Installation and Maintenance