Hitachi E Series Operation 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
Notes
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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
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the specifi ed capacity.
NOTE:
If the supply cord is damaged, it must be replaced by the special cord obtainable at authorized
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service parts centers.
CHECK THE FOLLOWING POINTS
Do the batteries need replacement?
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Is the polarity of the inserted batteries correct?
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Is the fuse all right?
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Is the voltage extremely high or low?
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Is the circuit breaker "ON"?
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Is the setting of operation mode different from other indoor
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units?
Is the air fi lter blocked with dust?
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Does sunlight fall directly on the outdoor unit?
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Is the air fl ow of the outdoor unit obstructed?
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Are the doors or windows opened, or is there any source
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of heat in the room?
Is the set temperature suitable?
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Are the air inlets or air outlets of indoor and outdoor units
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blocked?
Is the fan speed "LOW" or "SILENT"?
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In quiet or stop operation, the following phenomena may occassionally
occur, but they are not abnormal for the operation.
(1) Slight fl 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 fi lter and the evaporator regularly must be cleaned
to reduce the odor.
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