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INDOOR UNIT INDICATORS
HITACHI
OPERATION INDICATOR
AUTO RESTART SWITCH
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In the event of power failure, the air conditioner will restart automatically in the previously selected mode
once the power is restored.
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In the event of power failure during TIMER operation, the timer will be reset and the unit will begin or stop
operating under a new timer setting.
OPERATION LAMP
This lamp lights during operation.
The OPERATION LAMP fl ashes in the following cases
during heating.
(1) During preheating
For about 2–3 minutes after starting up.
(2) During defrosting
Defrosting will be performed about once an hour
when frost forms on the heat exchanger of the
outdoor unit, for 5–10 minutes each time.
TIMER LAMP
This lamp lights when the timer is working.
FILTER LAMP
When the device is operated for a total of about 200
hours, the FILTER lamp lights to indicate that it is time
to clean the fi lter. The lamp goes out when the POWER
SWITCH set to OFF and ON again.
This fi gure shows the opening condition of
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front panel. Refer to page 20 in relation to
how to open or close the front panel.
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