On-Screen Display During Abnormal Operation - Hitachi UTOPIA R32 Series Installation And Operation Manual

14.1 On-screen display during abnormal operation

(Refrigerant system-address number)
Installed unit number
Abnormal operation can be produced due to the following reasons:
◆ Malfunction
If the RUN LED flickers for 2 seconds, there is a failure in the transmission between the indoor unit
and the remote control switch.
Possible causes are:
• Broken remote cable.
• Contact failure in the remote control cable.
• Defective IC or defective microcomputer.
In any case, ask your retailer for service.
If the RUN LED flickers 5 times (5 seconds) with the unit number and the alarm code displayed,
make a note of the alarm code (refer to the table below) and ask your retailer for service.
The RUN (red) indicator flashes
The ALARM indicator appears on the liquid crystal display.
The screen also displays the following items:
✓ A: indoor unit address (Abnormal Indoor Unit Number).
✓ B: Refrigerant cycle number (Abnormal Refrigerant Cycle Number).
✓ C: Alarm code.
PMEN0654 rev.0 - 12/2023
PC-ARFG-E example
Indoor unit number
When more than one
indoor unit is connected,
press " " or " " to show
other indoor units.
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