Panasonic CU-8ME1XPK - Fin Temperature Rise Sensor; Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor

Troubleshooting (Inverter) PACD011001C2
542 Troubleshooting UM Combination “MA1R Series” Using R-407C
5.8 Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise Sensor
Remote Controller
Display
P4
Supposed Causes
„
Defect of radiator fin temperature sensor
„
Defect of inverter unit
Troubleshooting
(VF070)
After resetting, restart.
YES
YES
Is the resistance
of thermistor correct?
Is the resetting possible?
Replace radiation fin thermistor.
Measure the resistance of
radiation fin thermistor.
NO
Replace inverter PC board.
NO
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.