Regular Inspection - Hitachi RAD-50DH7A Service Manual

REGULAR INSPECTION

PLEASE CHECK THE FOLLOWING POINTS BY QUALIFIED SERVICE PERSONAL EITHER
EVERY HALF YEARLY OR YEARLY. CONTACT YOUR SALES AGENT OR SERVICE SHOP.
1
2
3
Confirm
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
When it does not hot well
G 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.
G
Power supply shall be connected at the rated voltage, otherwise the unit will be broken or could not reach the
specified capacity.
Is the earth line disconnected or broken?
Is the mounting frame seriously affected by rust and is the
outdoor unit tilted or unstable?
Is the plug of power line firmly plugged into the socket?
(Please ensure no loose contact between them).
G
Is the fuse all right?
G Is the voltage extremely high or low?
G Is the circuit breaker "ON"?
G
Was the air filter cleaned?
G Does sunlight fall directly on the outdoor unit?
G Is the air flow of the outdoor unit obstructed?
G Are the doors or windows opened, or is there any source of
heat in the room?
G Is the set temperature suitable?
Notes
G
In quiet or stop operation, the following phenomena may occassionally occur, but
they are not abnormal for the operation.
(1) Slight flowing 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.
G 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 filter and the evaporator regularly must be cleaned to reduce the odor.
CHECK THE FOLLOWING POINTS
– 22 –