8 Troubleshooting
273
SMGB0064 rev.0 - 08/2011
8
Alarm code
55
IPM or PCB2 abnormality for IVX Series
• The RUN LED ickers and “ALARM” is displayed on the remote control switch.
• The unit number, the alarm code and the unit code are alternately displayed on the set temperature section. The unit
number and the alarm code are displayed on the display of the outdoor unit PCB.
- In case that the abnormality of alarm code 55 occurs four times within 30 minutes, the alarm code of abnormality
occurred for the fourth time is indicated. Retry operation is performed up to third time of abnormality occurrence.
Conditions:
When the transmitting abnormality occurs between dipIPM (or IPM) and PCB2), this alarm is indicated and the operation
is stopped.
Troubleshooting:
Replace the PCB2.
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