Radiation Fin Temperature Rise - Daikin Super Multi NX FFQ25B8V1B Service Manual

SiBE121021_C

7.14 Radiation Fin Temperature Rise

L4
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of A radiation fin temperature rise is detected by checking the radiation fin temperature with the
compressor on.
Malfunction
Detection
Malfunction
Decision
Conditions
50-75 class
80/90 class
Supposed
Causes
Service Diagnosis
j h h h i
1 2 3 4
The radiation fin temperature with the compressor on is above
The error is cleared when the temperature drops below
A (°C)
103
105
If the error repeats, the system is shut down.
Reset condition: Continuous run for about 60 minutes without any other error
Defective outdoor unit fan
Short circuit
Defective fin thermistor
Disconnection of connector
Defective outdoor unit PCB
Silicon grease is not applied properly on the radiation fin after replacing the outdoor unit
PCB.
h
5
B (°C)
95
97
Troubleshooting for Outdoor Unit
°C.
A
°C
B
353