TCL Air Conditioner Service Manual
31
3. Maintenance
3.1 Failure code
Code Reason Remark
E1
IDU Room Temperature sensor failure.
（IDU RT failure）
IDU sensor and PCB.
E2
IDU Coil temperature sensor failure.（IDU
IPT failure）
IDU sensor and PCB.
E4 Gas not enough Please check the pressure in cooling
E5 System protection For the high/low pressure valve model
E6
IDU PG Fan motor / DC fan motor works
abnormal（IDU failure）
Fan motor, fan blade and PCB.
P7 Overheating protection on Heating mode. Please check the troubleshooting for detail.
Note: Remote controller FAILURE CODE Querying function
As shown in the failure codes, some of the codes (Fb~bj) need to press remote control for inspection.
While unit on operation, press the ECO button 8 times with 8 seconds, the buzzer BIBI 2 times, you can
inspect the special failure code as Fb ~Fn, bj etc.
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