Radiation Fin Temperature Rise - Daikin FTX-N Series Service Manual

SiUS091601EA

7.14 Radiation Fin Temperature Rise

L4
Error Code
Method of Error
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
Detection compressor on.
Error Decision  If the radiation fin temperature with the compressor on is above A.
Conditions  The error is cleared when the radiation fin temperature drops below B.
 If the error repeats, the system is shut down.
 Reset condition: Continuous run for about 60 minutes without any other error
09 class
12 class
15 class
18/24 class
Supposed  Defective outdoor fan motor
Causes  Short circuit
 Defective radiation fin thermistor
 Disconnection of connector
 Defective outdoor unit PCB
 Silicone grease not applied properly on the radiation fin after replacing the outdoor unit PCB
Part 6 Service Diagnosis
A B
(°C) (°F) (°C)
99 210.2 70
90 194 84 183.2
100 212 57 134.6
82 179.6 77 170.6
Troubleshooting for Outdoor Unit
(°F)
158
176