5.5.2 In Abnormal Condition
Abnormality
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When there is a group in abnormal condition, the colour of its button changes to red.
The “Alarm Inform.” button also appears at the lower side of the screen.
If “Alarm Inform.” is tapped, the following items are displayed:
Refrigerant cycle number, address and model code* of the indoor unit in abnormal condition.
Alarm code
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In case that multiple indoor units are in abnormal condition, the detailed information of abnormality for each unit is shown
alternatively. In such cases, it is also possible to select the group in abnormal condition to display by tapping the “<” or “>”
buttons at the “Alarm” window. Contact your dealer or a Hitachi customer service centre for detailed information, after checking
the indications of the LCD.
Power Failure
The display turns OFF in the event of a power failure.
Once the devices stops due to a power failure, it does not start again after the power is recovered. Starting procedure shall be
performed again.
In case of a momentary power failure which lasts less than 2 seconds, the device starts up automatically again.
Noise
There may be cases in which the display turns OFF and the device stops due to the activation of the micro controller for
protection from electric noise. When the device stops due to this reason, perform the starting procedures again.
Freezing of display at the “Start-up” screen
There is the possibility that a communication error occurred. Contact your dealer or a Hitachi customer service centre for detailed
information.
Operation
PMML0332A rev.0 - 05/201584
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