OM 1263 • MICROTECH UNIT CONTROLLER 94 www.DaikinApplied.com
ERROR CODE: P4 – Malfunction of Inverter Radiating Fin Temperature Rise Sensor
Remote
Controller
Display
P4
Method of
Malfunction
Detection
Resistance of radiation n thermistor is detected when the compressor is not operating.
“P4” will be displayed by pressing the inspection button.
Supposed
Causes
● Defect of radiator n temperature sensor
● Defect of inverter PC board
● Faulty inverter compressor
● Faulty fan motor
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