Radiation Fin Temperature Rise - Daikin SUPER MULTI NX G Series Service Manual

SiUS12-928_A

5.23 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
Malfunction compressor on.
Detection
 The radiation fin temperature with the compressor on is above
Malfunction
 The error is cleared when the temperature drops below
Decision
Conditions
18 class
24/32 class
 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
Supposed
 Short circuit
Causes
 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.
Service Diagnosis
1 2 3 4
90°C (194°F)
105°C (221°F)
.
85°C (185°F)
97°C (207°F)
Troubleshooting
.
138