Inverter Radiation Fin Temperature Abnormality

Error Code P4

Applicable

Models

REYQ-T

Method of Error

Detection

Detect the resistance of the following thermistors during the compressor stops running: Radiation fin thermistor.

Thermistor located in PCB circuit.

Heat sink thermistor.

Error Decision

Conditions

When the resistance of the thermistor comes to a value equivalent to open or short circuit.

Error is not decided while the unit operation is continued.

“P4” will be displayed by pressing the inspection button.

Supposed

Causes

Defective radiation fin temperature thermistor

Defective inverter PCB

Defective INV compressor

Defective fan motor

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