Si18-201 Main Functions
Main Functions 97
1.1.33 Filter Check Indicator
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The filter check indicator located at the center of the unit will indicate the time for
cleaning the air filters.
The indicator will indicate an appropriate cleaning time depending on the environment (dusty
place or not). This will prevent you from forgetting filter cleaning and also prevent performance
drop that might be caused by using clogged filters and wasteful use of electricity by
approximately 8%.
<Contents of indication>
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Sensed by the operation hours and the fan motor voltage
1. Filter clogging (
★
)
2. Accumulated operation hours
Indicates the earlier one of the above 1 or 2.
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This indicator utilizes the characteristic that the fan motor voltage drops as the crossflow fan
gets clogged; it does not detects the amount of filter clogging.
Note:
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When the power supply is reset, the accumulated operation hour is not reset.
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After cleaning and mounting the filters, press the reset button located inside the panel of the
unit.
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