Hitachi RAC-25YH4, Service Manual, Page: 11 / 121

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NAMES AND FUNCTIONS OF EACH PART
INDOOR UNIT INDICATIONS
TIMER LAMP (Orange)
This lamp lights when the timer is working.
FILTER LAMP (Green)
When the device is operated for a total of about 200
hours, the FILTER lamp lights indicates that it is time
to clean the filter.The lamp goes out when the
“
(AUTO SWING)” button is pressed while the
operation is stopped.
OPERATION LAMP (Yellow)
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 an hour
when frost forms on the heat exchanger of the
outdoor unit, for 5-10 minutes each time.
TEMPORARY SWITCH
●
Use this switch to start and stop when the remote controller does not work.
●
By pressing the temporary switch, the operation is done in automatic mode.
CAUTION
Turn off the circuit breaker or pull out
the power plug if the unit is not be
operated for a long period.
✩
If the power stays on and the unit is not operated, power is slightly consumed in the control circuit.
The power is saved by turning off the power switch (or the circuit breaker when the power is supplied
from the outdoor unit).
Attaching the air cleansing and deodorizing filters (Accessories) to the filter frame.
• Attach the air cleansing and deodorizing filters to the frame by
gently compress its both sides and release after insertion into
filter frame.
• The cooling capacity is slightly weakened and the cooling speed
becomes slower when the air cleansing and deodorizing filters
are used. So, set the fan speed to “HIGH” when using it in this
condition.
• Air cleansing and deodorizing filters are washable and reusable up to 20 times by using vacuum
cleaner or water rinse under running tap water. When you want to renew it, please ask your sales
agent.
Frame
POWER SWITCH
RAS_25_35_AW_001-024 2003.12.31, 10:43 AM 9