Haier AS09/12GS2ERA Service Manual page 58

7.3.2 Indoor fan motor malfunction
E14
Indoor Display
Method of The rotation speed detected by the Hall IC during fan motor operation is used to determine
Malfunction abnormal fan motor operation
Detection
Malfunction when the detected rotation feedback singal don't receiced in 2 minutes
Decision
Conditions
Supposed Causes
How to check Fan Motor (DC)
Notes:the a/c is electrifying,don't pull out or insert the terminals of the
motor,else the motor would be damaged
* Caution Be sure to turn off power switchbefore connect or disconnect connector or else
Troubleshooting
AS09/12GS2ERA 1U09/12BS1ERA-SM
Operation halt due to breaking of wire inside the fan motor .
Operation halt due to breaking of the fan motor lead wires
Detection error due to faulty indoor unit PCB
1. Check connector connection.
2. Check motor power supply voltage output (pins 1-4).
3. Check motor control voltage (pins 4-5).
4. Check rotation command voltage output (pins 4-6).
5. Check rotation pulse input (pins 4-7).
parts damagemay be occurred.
5
Servive Diagnosis
Domestic air conditioner