Si20-701_B Troubleshooting by Remote Controller
294
3.66 (
L8
) Electronic Thermal
Switch (Time Lag)
Remote Controller Display
(L8)
∗ No display on remote controller. See “Error decision
condition” below for more detail.
Applicable Models
RZ(Y)
Method of Error Detection
Current flowing in the power transistor is converted to
voltage by T1C (DC current sensor) for detection.
Error Decision Conditions
When overload in the compressor is detected (exception:
at startup).
∗ In RZ(Y), error is not generated by the electronic
thermal switch. Instead, the unit repeats retry operations.
The remote controller does not indication "
L8
."
Therefore, check the LED indication in the outdoor unit
for problem diagnosis.
Supposed Causes
Compressor overload (in operation)
Open circuit in compressor coil
Defective outdoor unit PCB
Defective inverter
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