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Hitachi RAS-S18CAK Instruction Manual page 20

Split type air conditioner indoor unit/outdoor unit

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AFTER SALE SERVICE AND WARRANTY
WHEN ASKING FOR SERVICE, CHECK THE FOLLOWING POINTS
CONDITION
When it does not operate
When it does not cool 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.
Please note:
On switching on the equipment, particularly when the room light is dimmed, a slight brightness Á uctuation
may occur. This is of no consequence.
The conditions of the local Power Supply Companies are to be observed.
NOTE:
If the supply cord is damaged, it must be replaced by the manufacturer, its service agent or similarly
qualiÀ ed person in order to avoid a hazard.
Is the fuse all right?
Is the voltage extremely high or low?
Is the circuit breaker "ON"?
Was the air À lter cleaned?
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?
Notes
In quiet or stop 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.
CHECK THE FOLLOWING POINTS
– 20 –

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