Si10-417
Troubleshooting
Service Diagnosis
111
5.2.43 Radiation Fin Temperature Rise
Remote
Controller
Display
L4
Outdoor
Unit LED
Display
A
5
1
1
2
1
3
1
4
4
Method of
Malfunction
Detection
A radiation fin temperature rise is detected by checking
the radiation fin temperature being detected by the fin
thermistor with the compressor on.
Malfunction
Decision
Conditions
If the radiation fin temperature with the compressor on is
above 90°C for 5.2~7.5 kW-or-smaller class systems or
above 85°C for 8.0 · 9.0 kW class systems,
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
Trouble
shooting
Check No.6
Refer to
P.157
Check
No.7-1
Refer to
P.158
Check No.9
Refer to
P.160
Turn off the power and turn it
on again to get the system
started.
Replace the fan
motor.
Correct the
connectors and fan
motor leads.
Replace the outdoor
unit PCB.
Clean up the radiation
fin.
Error displayed again?
Check No. 9
Check the outdoor unit
fan or related.
Radiation fin dirty?
C
heck No.
7-1
Check the installation condition.
YES
NO
Slightly dirty
Malfunctioning
Too dirty
Functioning
A
B
Caution
Be sure to turn off power switch before connect or
disconnect connector, or parts damage may be occurred.
Si10-417.fm Page 111 Wednesday, September 22, 2004 6:38 PM
