Daikin Error Code P4

Fault Code P4: Malfunction of radiation fin temperature sensor

Fault Code P4

Fault: Malfunction of radiation fin temperature sensor
Defective radiation fin temperature thermistor
Defective inverter PCB
Defective INV. compressor
Defective fan motor

For Daikin split and multi-split air conditioning systems included wall-mounted, duct-connected, floor-standing, multi-flow, stylish, european, ururu sarara & cassette-type units.
If molded case circuit breakers or earth leakage circuit breakers have tripped, do not reset the breaker immediately without first checking for any problems with insulation of equipment.
Resetting breakers without a check of insulation may cause damage to equipment.