Airwell AWAU-YCZ218-H11, Service Manual

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Troubleshooting
162 Electrical Control System
2.4.1.4 Open or short circuit of temperature sensor.
Check the connections
between temperature
sensor and PCB. Are
the connections good?
Correct the connections. No
Yes
Yes Replace indoor or outdoor PCB.
Replace the sensor
Check the resistance value
of the sensor via Appendix 1
Is it normal?
No
2.4.1.5 Full-water malfunction
If the water-level switch
is inserted well?
No
Insert the water-level switch well
If the water-level switch
is broken?
Yes Replace the water-level switch
If the water pump is
normal?
No
Replace the water pump
Yes
No
Yes
Check PCB board or replace the indoor main PCB