Oasis On-off
DM12-01.01.09en
52
Service
manual
11.2.2 Zero crossing detection error
This is alarm signal when the main chip can’t detect over-zero signal. When such failure occurs, the
main control board must have fault.
11.2.3 Indoor fan speed has been out of control diagnosis
Is the fan motor connector and
connection good?
The unit does not
work normally
Turn off the unit, rotate the cross
fan. Does it rotate freely?
No
Disassemble the connection between
the fan and the motor, check if the
bearing is normal. If not, change the
bearing. If yes, follow the below step.
Yes
No
Yes
Is the voltage being applied to the
fan motor?
Yes
Shut off the power supply and turn
on it 5s later
Replace the indoor fan motor
Replace the indoor PCB
