Hitachi RAS-50YH4 Service Manual page 11

INDOOR UNIT INDICATORS
OPERATION INDICATOR
TEMPORARY SWITCH
Use this switch to start and stop when the remote controller does not work. [Use non-conductor stick
(example toothpick)]
By pressing the temporary switch, the operation is done in previously set operation mode.
●
When the operation is done using the temporary switch after the power source is turned off and turn on
●
again, the operation is done in automatic mode.
TEMPORARY
SWITCH
Temporary Switch
Press
Non-conductor Stick
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 filter. The lamp goes out when the POWER
SWITCH set to OFF and ON again.
OPERATION LAMP
This lamp lights during operation.
The OPERATION LAMP flashes 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 every one
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.
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TEMPORARY
SWITCH