34
Troubleshooting
Fault diagnosis by remote controller
In the ARC452A series, the temperature display sections on the
main unit indicate corresponding codes.
1. When is held down for
5 seconds, a
“”
indication blinks on the
temperature display section.
2. Press repeatedly until a continuous
beep is produced.
• The code indication changes as shown below, and notifies
with a long beep.
NOTE
Fault diagnosis.
CODE MEANING
00 NORMAL
A1 INDOOR PCB DEFECTIVENESS
A6 FAN MOTOR FAULT
C4 FAULTY HEAT EXCHANGER TEMPERATURE SENSOR
C9 FAULTY SUCTION AIR TEMPERATURE SENSOR
• A short beep and 2 consecutive beeps indicate non-corresponding codes.
• To cancel the code display, hold the down for 5 seconds. The code display also
cancel itself if the button is not pressed for 1 minute.
01_EN_3P257979-1A.fm Page 34 Tuesday, March 3, 2015 3:09 PM
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