Troubleshooting (Inverter); Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise; Outdoor Unit: Malfunction Of Inverter Radiating; Fin Temperature Rise - Panasonic Urban Multi MX1R Series Service Manual

PACD011001C2

5. Troubleshooting (Inverter)

5.1 Outdoor Unit:
L4
Remote Controller
Display
„ Actuation of fin thermal (Actuates at min. 90°C and resets at max. 80°C)
Supposed Causes
„ Defect of inverter PC board
„ Defect of fin thermistor
Troubleshooting
Troubleshooting UM Combination "MA1R Series" Using R-407C
Malfunction of Inverter Radiating Fin Temperature Rise
Be sure to turn off power switch before connect or disconnect connector,
Caution
or parts damage may be occurred.
Temperature
of the radiator fin rises.
YES
Actuates at min. 90 ˚C
Resets at max.
80 ˚C
NO
Characteristic
check of the radiator fin
Abnormal
thermistor (Refer to thermistor
characteristics
table.)
Normal
NO
Is reset possible?
YES

Troubleshooting (Inverter)

Defect of power unit radiation.
• Air intake port is clogged
• Radiator fin is dirty
• Outdoor temperature is high
Replace the thermistor.
Replace the inverter unit.
Reset and operate.
(VF063)
535