Hitachi RAC-60YHA3 Instruction Manual page 23

AFTER SALE SERVICE AND WARRANTY
WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS
CONDITION
If the remote controller is
not transmitting a signal.
Remote controller
display is dim or blank.)
When it does not operate
When it does not cool well
When it does not hot well
● Please contact your sales agent immediately if the air conditioner still fails to operate normally after the above
inspections. Inform your agent of the model of your unit, production number, date of installation. Please also
inform him regarding the fault.
●
Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach
the speciÀ ed capacity.
NOTE:
● If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized
service parts centers.
● Do the batteries need replacement?
● Is the polarity of the inserted batteries correct?
● Is the fuse all right?
● Is the voltage extremely high or low?
● Is the circuit breaker "ON"?
● Is the setting of operation mode different from other indoor
units?
●
Is the air À lter blocked with dust?
● Does sunlight fall directly on the outdoor unit?
● Is the air Á ow of the outdoor unit obstructed?
● Are the doors or windows opened, or is there any source
of heat in the room?
● Is the set temperature suitable?
● Are the air inlets or air outlets of indoor and outdoor units
blocked?
● Is the fan speed "LOW" or "SILENT"?
Notes
● In quiet operation or stopping the operation, the following phenomena
may occassionally occur, but they are not abnormal for the operation.
(1) Slight Á owing noise of refrigerant in the refrigerating cycle.
(2) Slight rubbing noise from the fan casing which is cooled and then
gradually warmed as operation stops.
● The odor will possibly be emitted from the room air conditioner because
the various odor, emitted by smoke, foodstuffs, cosmetics and so on,
sticks to it. So the air À lter and the evaporator regularly must be cleaned
to reduce the odor.
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CHECK THE FOLLOWING POINTS