Troubleshooting (Inverter); Outdoor Unit: Malfunction Of Inverter Radiating Fin Temperature Rise - Daikin VRV R-407C PLUS Series Service Manual

SiE 00-07

5. Troubleshooting (Inverter)

5.1

Outdoor Unit: Malfunction of Inverter Radiating Fin Temperature Rise

L4
Remote Controller
Display
Supposed Causes
Troubleshooting
Troubleshooting R-407C PLUS Series
Actuation of fin thermal (Actuates at min. 90˚C and resets at max. 80˚C)
Defect of inverter PC board
Defect of fin thermistor
Temperature
of the radiator fin rises.
Actuates at min. 90 ˚C
Resets at max.
80 ˚C
NO
Characteristic
check of the radiator fin
thermistor (Refer to thermistor
characteristics
table.)
Normal
Is reset possible?
YES
YES
Abnormal
NO

Troubleshooting (Inverter)

Defect of power unit radiation.
• Intake port is clogged
• Radiator fin is dirty
• Outdoor temperature is high
Replace the thermistor.
Replace the inverter unit.
Reset and operate.
(VF063)
159