TCL U-MATCH-R32 Series

TCL U-MATCH-R32 SERIES DC INVERTER AIR CONDITIONERS SERVICE MANUAL
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3.3.4 E3, E7 or E8----ODU Coil temperature sensor, Ambient temperature
sensor or Discharge temperature sensor failure.
When any of the sensor resistance open or short circuit , unit will display failure code as E3/E7 or E8, IDU
and ODU turns off. When the sensor resistance recovery, unit revert to be standby, customer can switch on
the unit directly.
Start
Display E3, E7 or E8
No
Is the sensor well connected
to ODU PCB ?
Re connect
Yes
Problem solved ?
Yes
No
Multi-meter check the
sensor resistance.
Open or short circuit?
Yes
Replace sensor
No
Problem solved?
Yes
No
Replace ODU PCB
End