59
PMEN0654 rev.0 - 12/2023
14
MAIN ALARM CODES
TROUBLESHOOTING
✓ D: Model code.
H Heat pump
P
Inverter
F Mul (SET FREE)
C Cooling only
E
Other
b IVX, individual operaon
L KPI
✓ E: If there are various indoor units connected, the above menoned informaon is shown for
each one of them.
◆ Power supply failure
All the indicaons are OFF.
Once the unit is stopped by the power failure, the unit will not be started again although the
power recovers. Perform the starng procedures again. In case of instantaneous power failure
within 2 seconds, the unit will be started again automacally.
◆ Electrical noise
There could be a case that all the indicaons are OFF and the unit is stopped. This is occurred by
the acvaon of the micro computer for the unit protecon from the electric noise. Perform the
starng procedures again.
14.2 Main Alarm Codes
• 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 secon.
• The unit number and the alarm code are displayed on the 7 segments of the outdoor unit PCB
and remote control screen (if installed).
• The list of the alarms which are actually shown in the remote control switch display may vary
depending on the models and combinaons of indoor and outdoor units. The causes leading
to the acvaon of a specic alarm in certain models may not trigger the same alarm in other
models, without this implying an abnormality.
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