Daikin VRV - WII, Service Manual

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Troubleshooting by Indication on the Remote Controller SiUS30-604
196 Troubleshooting
2.29
“
L4
”
Outside Unit: Malfunction of Inverter Radiating Fin
Temperature Rise (R1T)
Remote
Controller
Display
L4
Applicable
Models RWEYQ60, 72, 84MTJU
Method of
Malfunction
Detection Fin temperature is detected by the thermistor of the radiation fin.
Malfunction
Decision
Conditions When the temperature of the inverter radiation fin increases above 98°C.
Supposed
Causes
„
Actuation of fin thermal (Actuates above 98°C)
„
Defect of inverter PC board
„
Defect of fin thermistor
Troubleshooting
∗
2: Refer to thermistor resistance / temperature characteristics table on P278.
(V2811)
Resistance
check of the radiator fin
thermistor
Defect of power unit radiation.
•
Intake port is clogged
•
Radiator fin is dirty
•
Outdoor temperature is high
NO
Replace the thermistor.
YES
Abnormal
Is reset possible?
Reset and operate.
Normal
Replace the inverter PC board
NO
YES
Temperature
of the radiator fin rises.
Actuates at min.
208
°
F
Caution
Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.