TCL TAC-09CSD/XAB1

TCL Air Conditioner Service Manual
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32
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3.2 Trouble shooting
3.2.1 E1, E2 ---IDU Room temperature sensor and/or coil temperature sensor failure.
Start
Display E1or E2
Re-connect
Is the sensor well
connected to PCB
Multi-meter check the
sensor, is it open or
short circuit?
Replace the sensor
No
Yes
Yes
Replace IDU PCB
The malfunction
eliminated?
End
E1/E2
disappear?
Yes
No
No
No
Yes