L4 Radiation Fin Temperature Rise - Daikin R71FUV1 Service Manual

Si20-701_B
L4
3.60
Rise
Remote Controller Display
L4
Applicable Models
RZQ-K/H, RZQ(S)-B/C, RZQG, RZR-KU/HU
Method of Error Detection
Radiation fin temperature is detected by the radiation fin
thermistor.
Error Decision Conditions
When the temperature of the inverter radiation fin rises
abnormally due to defective heat dissipation.
Supposed Causes
Defective radiation fin thermistor
High outdoor air temperature
Blocked suction opening
Dirty radiation fin
Defective outdoor inverter PCB
Activation of fin thermal switch (For RZQ-K, RZQ(S)-
B/C, RZQG, RZR-KU/HU)
Insufficient cooling of inverter radiation fin (For RZQ-K,
RZQ(S)-B/C, RZQG, RZR-KU/HU)
Defective propeller fan (For RZR-KUV2S)
270
Radiation Fin Temperature
Troubleshooting by Remote Controller