Bedienungsanleitung Mitsubishi FDTC35VF (Seite 18 von 24) (Englisch)

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TROUBLE SHOOTING

Check the following items before requiring service.

THE UNIT DOES NOT WORK AT ALL

Is the power supply switch

turned off?

Is there a blackout or is the

fuse blown?

Is the leakage breaker

activated?

Dangerous. Immediately turn

off the power supply switch,

and contact your dealer.

Is sunlight or other strong

illumination striking the

receive unit? (wireless unit)

OFF

Is the air filter clogged?

Is the swing louver

horizontal (during

heating)?

If the swing

louver is

horizontal, the

airflow may not

reach down to

the floor.

Are there any obstacles

blocking the air inlet

and outlet grill?

• Is the direct daylight

coming into the room?

• Arethereany

unexpected heat

sources in the

room?

• Are there too many

people in the room?

Is the unit in the

heating preparation

mode?

☞

See page 18

POOR COOLING OR HEATING POOR COOLING

If, after checking the items above, the air conditioner still does not operate normally or in the next cases, stop operating and contact your dealer.

• If the fuse and breaker blow frequently. • If water drips at cooling/dehumidifying operation. • If the operation or operation noise is abnormal.

• If the check indicator light flashes.

The phenomena mentioned below is not malfunction.

NO AIRFLOW AT HEATING

HOW TO MAINTAIN

Air filter

tabs

When mounting, press the lever forward

until it snaps.

When attaching the filter, insert the

filter into the tabs of the inlet grille.

J Ceiling suspended (FDE)

1. Slide the lever of the inlet grille

backward

( direction) and open it

downwards.

2. Pressing the inlet grille, press the filter

to remove it from the tab and pull it

downwards.

Air filter is attached when the air conditioner is installed, so consult your dealer about

how to remove or clean it.

J Duct connected −High static pressure− (FDU)

J Duct connected −Middle static pressure− (FDUM)

MAINTENANCE OF THE UNIT

AT THE END OF THE PERIOD OF USE

(after a long period of use)

AT THE BEGINNING OF THE PERIOD OF USE

(after a long unused period)

• Clean the unit by wiping with a piece of soft and dry cloth.

If the unit is very dirty, wipe it with a piece of cloth wet with

neutral detergent dissolved in lukewarm water and wipe it

off with clean water.

• Make sure to turn off the power supply.

The air conditioner consumes several tens of watts

electricity even if it is stopped.

• Cleantheairfilterandmountit.

• Cleantheindoor/outdoorunits.

• Make sure that there is no object blocking the airflow

around the inlet and outlet grilles of the indoor/outdoor

unit.

• Inspect the air filter. If it is dirty, clean and mount it.

• Turn on the power supply button for 6 hours before

starting the operation.

How to clean

1 Wash away for cleaning. If it is not so dirty, tap it or use

cleaner.

If it is very dirty, dissolve some neutral detergent in lukewarm

water (approximately 30°C), rinse the filter with it and wash

the detergent away completely.

2 After the air filter is dried, mount it to the main body and press

RESET button.

ATTENTION

• Do not dry by exposing the air filter to the direct sunlight or

using fire. Otherwise, the filter may be damaged.

• Do not operate the air conditioner with the filter removed.

Otherwise it may lead to trouble.

The air conditioning system

sounds as if water is

draining from it.

Sounds of rustling or gurgling may be heard when the operation is started, when the compressor is activated/

deactivated during operation, or when the operation is stopped. These are the sounds of the refrigerant

flowing through the system.

Sounds of rustling or

gurgling may be heard from

a stopped indoor unit.

These sounds can be heard when the air conditioning system is performing automatic control.

The supply air from the

indoor unit smells bad.

The supply air from the indoor unit may smell bad if the smell of cigarettes, cosmetics and/or furniture has

saturated the air conditioning system.

White vapor is generated

from the indoor unit during

operation.

White vapor may be generated during operation if the system is used in environment where oils and fats are

frequently used, such as in restaurants. In this case, consult the dealer and clean the heat exchanger.

The operation switched to

fan operation during cooling

operation.

The operation may switch to fan operation automatically in order to avoid frost being built up on the surface of

the heat exchanger. The operation will soon return to cooling operation.

The indoor fan does

not stop even when the

operation is stopped in

heating mode.

The indoor unit fan may continue operating for 40 seconds in order to remove remaining heat in the indoor

unit.

CAUTION

Do not turn off the power supply until the fan stops.

The air conditioning system

cannot start operating again

immediately after stopping.

During the first 3 minutes after stopping operation, it is not possible to perform cooling, dehumidifying or

heating operation even if the ON/OFF button is pressed to indicate “operation.” This is because a circuit for

protecting the compressor is activated (the fan is operating during this period).

No air comes out during

dehumidifying operation.

The airflow volume cannot

be changed.

During dehumidifying operation, the fan speed is automatically controlled in low speed/stop cycle in order to

avoid both drastic temperature drop and humidity rise.

The swing louver moves

without any operation.

The swing louver automatically swings twice when the power supply switch is turned on. This is not a trouble.

The louver also moves automatically to the horizontal position when “PREPARATION OF HEATING” is

displayed.

The outdoor unit discharges

water or steam during

heating operation.

Water or steam is discharge during defrosting operation which removes frost built up on the surface of the

heat exchanger in the outdoor unit in heating mode.

The outdoor unit fan is not

running even when the

system is in operation.

The fan speed is automatically controlled according to the ambient temperature. It may be stopped in high

ambient temperature in case of heating, and in low ambient temperature in case of coding. Also, the fan is

stopped during defrosting operation.

CAUTION

The fan will suddenly begin to operate even if it is stopped. Do not insert finger and/or stick.

J Ceiling cassette −4 way Compact (600×600mm) − (FDTC)

1. Slide the inlet grille levers in the direction of the arrow ( ), and

open it downwards.

2. Release the inlet grille stopper.

3. Pull the filter towards you.

4. When the filter is put in place, insert the filter into the hooks on

the inlet grille, and be sure to return the stopper to its original

position.

5. When putting the inlet grille back in place, slide the levers in the

opposite direction and check to be sure that the grille does not

come open.

Hooks

Stopper

Hooks

Floor Standing (FDF)







Please take out the air filter by

pulling carefully the both sides of the

inlet grille.

Mitsubishi FDTC35VF Seite 18

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