Hitachi RAC-18WSA, Instruction Manual, Page: 28 / 308

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About the noise during filter cleaning
A whirring motor noise is generated due to driving of the cleaning unit.
A clapping noise is generated when the dust catcher collects the dust
swept by the cleaning unit.
A clapping noise is generated when the dust catcher is turned over by the
cleaning unit.
A sweeping sound is generated when the cleaning unit sweeps the dust.
Press the (STOP) button.
STOP
The air from the air conditioner will become softer when the air conditioner is operated immediately
after filter cleaning operation.
Only during the filter cleaning operation that was started by pressing the (FILTER CLEAN) button on
the remote controller, the filter cleaning operation stops if the (FILTER CLEAN) button on the remote
controller is pressed one more time.
FILTER CLEANING OPERATION (continued)
Only during the filter cleaning operation that was started by pressing the (FILTER CLEAN) button on
the remote controller, the filter cleaning operation stops if the (FILTER CLEAN) button on the remote
controller is pressed one more time.
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Manual filter cleaning operation
Use the remote controller to run filter cleaning operation when the air conditioner operation is stop.
before it is initialized.
Press the (FILTER CLEAN) button when the air-conditioner stops.
The cleaning unit makes one cycle of back and forth movement to sweep
the dust on the micro mesh stainless filter and the dust catcher puts the
collected dust into the dust box.
One cycle of filter cleaning operation will take approximately 5 minutes.
During manual filter cleaning operation, movable panel and horizontal air
deflectors remain closed when fan operation starts.
STOP
Press the (STOP) button.
If the air conditioner is not in use for a long period, it is recommended to manually run filter cleaning
flow
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