AUX Air Conditioner Service manual
41
4、Malfunction of the outer door motor
4.1. Check item
1) Is input voltage normal？
2) Is the connecting way of exterior connecting terminal correct？
3) Is indoor and outdoor communication normal？
4.2. Fault diagnosis procedure
Note：Each air conditioner is correspondent with an outdoor unit and two indoor unit.and a set of
controller. Please check accordingly.
Outdoor unit has two independent sets of systems. with a common fan. There may be cases when one
of the systems work well and the other doesn't. and this needs to observe the running of compressor to
make a judgment.
1 Unplug the power and re-plug after about 5 seconds
2 Is outdoor controller normal?
3 Is output voltage of relay normal? Socket connection is correc
4 Outdoor unit abnormal
5 Check according to “powerless” diagnosis part
6 Relay abnormal
7 Replace relay
5. Repeating motor of transmit fan blade is out of work
5.1. Check item
1）Input voltage is normal？
2）Whether step motor reliable tie CN2？
5.2. Fault diagnosis procedure
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