Справочник Пользователя для Hitachi ram70qh4

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PLEASE CHECK THE FOLLOWING POINTS EVERY EITHER HALFYEARLY OR YEARLY. CONTACTYOUR

SALES AGENT SHOULD YOU NEED ANY HELP.

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If the earth line is disconnected orfaulty, unit failure orelectric

shock hazard may result.

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It could collapse orfall, causing injury.

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¥ Do the batteries need replacement?

¥ Is the polarity of the inserted batteries correct?

¥ Is the airfilterblocked with dust?

¥ Is the set temperature suitable?

¥ Have the top and bottom air deflectors been adjusted to their correct

positions according to the operation mode selected?

¥ Are the airinlets orairoutlets of indoorand outdoorunits blocked?

¥ Is the fan speed ÒLOWÓ?

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¥ Is the fuse all right?

¥ Is the voltage extremely high or low?

¥ Is the circuit breaker ÒONÓ?

¥ Is the setting of operation mode different from other indoor units?

When it does not operate.

When it does not cool well.

When it does not heat well.

The following phenomena do not indicate unit failure.

The unit is preparing to blow warm air. Please wait.
<In operation>

The outdoorunit is defrosting. Please wait.

Hissing orfizzy sounds

Refrigerant flow noise in the pipe or valve sound generated when flow rate is

adjusted.

Squeaking noise

Noise generated when the unit expands or contracts due to temperature

changes.

Rustling noise

Noise generated with the indoor unit fanÕs rpm changing such as operation start

times.

Clicking noise

Noise of the motorized valve when the unit is switched on.

Perking noise

Noise of the ventilation fan sucking in air present in the drain hose and blowing out

dehumidifying waterthat had accumulated in the condensed watercollector. For

details, consult yoursales agent.

Changing operation noise

Operation noise changes due to power variations according to room temperature

changes.

Mist emission

Mist is generated as the air within the room is suddenly cooled by conditioned air.

During heating, the operation indicator

blinks and airblow stops

If the remote controller is not

transmitting a signal.

(Remote controller display is

dim orblank.)

¥ If the unit still fails to operate

normally after performing the

above inspections, turn the

circuit breaker off and contact

yoursales agent immediately.

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¥ The circuit breaker switches off or the fuse blows

frequently.

¥ The switch operation is not stable.

¥ Foreign matter or water accidentally enters the unit interior.

¥ The powercord gets excessively hot orits insulation is torn or

stripped.

¥ TIMER lamp on the indoorunit display blinks.

As the nature of the failure can be identified by the blinking cycle,

check the blinking cycle before turning off the circuit breaker.

¥ Please contact yoursales agent immediately if the airconditionerstill fails to operate normally afterthe above

inspections. Inform your agent of the model of your unit, production number, date of installation. Please also

inform him regarding the fault.

Please note:

On switching on the equipment, particularly when the room light is dimmed, a slight brightness fluctuation

may occur. This is of no consequence.

The conditions of the local Power Supply Companies are to be observed.

¥ In quiet operation or stopping the running, the following phenomena may

occasionally 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.

¥ The odorwill possibly be emitted from the room airconditionerbecause the

various odor, emitted by smoke, foodstuffs, cosmetics and so on, sticks to it. So
please clean the air filter and the evaporator regularly to reduce the odor.

Steam emitted from the outdoor unit Water generated during defrosting operation evaporates and steam is emitted.

Odors

Caused as the smells and particles of smoke, food, cosmetics, etc. present in room

airbecome attached the unit and blown off into the room again.
Defrosting is underway (as the heating operation is stopped, the microcomputer

checks frost accumulated in the indoor unit and instructs the unit to perform

automatic defrosting if necessary).
Shows preheating or defrosting operation is underway.

As the protective circuit or preheat sensor operates when unit operation is stopped

during preheating and then restarted, or when operation mode is switched from

cooling to heating, the lamp continues to blink.
ActualroomtemperaturemaydeviateslightlyfromtheremotecontrollerÕstemperature

setting depending on the numberof people in the room, indoororoutdoorconditions

when the airconditioneris used formore than one room at the same time.

The outdoorunit continues to operate

even if operation is stopped.

Does not reach the temperature

setting.

The OPERATION lamp is blinking.

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