Haier AS53HE1HRA Service Manual page 35

11.4.3 Indoor AC fan motor malfunction
Indoor Display
Method of
malfunction
detection
Malfunction
detection
conditions
Supposed
causes
Troubleshooting
Check whether terminals
on indoor pcb is well?
Electrify the machine again and turn it on in the cooling operation,
Measure voltage between the positions 1and 3 of Terminal CN5 on
the indoor PCB
the voltage is about 90-220vac
check whether motor can run
when turn on the unit
the indoor motor is damaged and need replace
E14
The fan speed detected by the Hall IC during fan motor running which is used to
determine the fan motor operating
When there is no fan speed feedback signal within 2 minutes
Operation halt due to breaking of wire inside the fan motor.
Fan motor overheat protection
Operation halt due to breaking of the fan motor lead wires
Detection error due to faulty indoor unit PCB
* Caution
Be sure to turn off power switch before connect or disconnect connector, or else parts
damage may be caused
Yes
Pull out the terminals on the indoor
mainboard and reinsert them.
Measure whether there is voltage pulse(0-5VDC)
between the positions middle wire and black wire
of Terminal CN2 on the indoor PCB
Is it ok?
the indoor pcb is damaged and need replace
33
Seivice diagnosis
Domestic air conditioner