P4 Inverter Radiation Fin Thermistor Abnormality - Daikin VRVII Manual

Troubleshooting by Indication on the Remote Controller
P4
3.56
Thermistor Abnormality
Remote Controller Display
P4
Applicable Models
VRVIII, III-S and III-Q Series
Method of Error Detection
Resistance of radiation fin thermistor is detected when
the compressor is not operating.
Error Decision Conditions
When the resistance value of thermistor becomes a value
equivalent to open circuited or short circuited status
∗ Error is not decided while the unit operation is
continued.
"P4" will be displayed by pressing the INSPECTION
button.
Supposed Causes
Defective radiation fin thermistor
Defective inverter PCB
Defective inverter compressor
Defective fan motor
Inverter Radiation Fin
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