Daikin ARKH20CVMB7, Service Manual

Page: 132 / 248

SiENBE04-512A Troubleshooting
Service Diagnosis 123
4.18 Radiation Fin Temperature Rise
Remote Control
Display
L4
Method of
Malfunction
Detection
A radiation fin temperature rise is detected by checking the radiation fin thermistor with the
compressor on.
Malfunction
Decision
Conditions
If the radiation fin temperature with the compressor on is above 90°C (100°C for (A)RK(X)H,
R(Y)N models).
„
If a radiation fin temperature rise takes place 4 times successively, the system will be shut
down.
„
The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Supposed
Causes
„
Fin temperature rise due to defective outdoor unit fan
„
Fin temperature rise due to short-circuit
„
Fin thermistor defective
„
Connector in poor contact
„
Outdoor unit PCB defective
SiENBE04-512A.book Page 123 Friday, October 5, 2007 1:49 PM