Hitachi UTOPIA R32 Series - 14.1 On-Screen Display During Abnormal Operation

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PMEN0654 rev.0 - 12/2023
14
ON-SCREEN DISPLAY DURING ABNORMAL OPERATION
TROUBLESHOOTING
14.1 On-screen display during abnormal operaon
PC-ARFG-E example
When more than one
indoor unit is connected,
press " " or " " to show
other indoor units.
Indoor unit number
(Refrigerant system-address number)
Installed unit number
Abnormal operaon can be produced due to the following reasons:
◆ Malfuncon
If the RUN LED ickers 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.
• Defecve IC or defecve microcomputer.
In any case, ask your retailer for service.
If the RUN LED ickers 5 mes (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 ashes
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.