Maintenance and Service

Troubleshooting

Check the following points before requesting repairs or service.... If the malfunction persist, please contact your

dealer.

Case

Explanation

See page

The air conditioner does not

• Have you made a mistake in timer operation?

13

 

operate.

• Has the fuse blown or has the circuit breaker

-

 

 

 

 

been tripped?

 

 

 

 

 

The room has a peculiar odor.

• Check that this is not a damp smell exuded by

 

-

 

 

the walls, carpet, furniture or cloth items in the

 

 

 

room.

 

 

 

It seems that condensation is

• Condensation occurs when the airflow from the

 

 

 

 

-

 

leaking from the air conditioner.

air conditioner cools the warm room air.

 

 

 

 

 

Air conditioner does not operate

• This is the protector of the mechanism.

 

 

 

for about 3 minutes when restart.

• Wait about three minutes and operation will

 

-

 

 

begin.

 

 

 

Does not cool or heat effectively.

• Is the air filter dirty? See air filter cleaning

 

 

 

 

24

 

 

instructions.

 

 

 

 

 

 

 

• The room may have been very hot when the

 

 

 

 

room air conditioner was first turned on. Allow

 

 

 

 

time for it to cool down.

 

 

 

 

• Has the setting temperature been set incorrectly?

 

 

 

 

15, 17

 

 

• Are the indoor unit's air inlet or outlet vents

 

 

 

 

 

-

 

 

obstructed?

 

 

 

 

 

 

The air conditioner operation is

• For a noise that sounds like water flowing.

 

 

 

noisy.

-This is the sound of freon flowing inside the air

 

 

 

 

conditioner unit.

 

 

 

 

• For a noise that sounds like the compressed air

 

-

 

 

releasing into atmosphere.

 

 

 

 

-This is the sound of the dehumidifying water

 

 

 

 

being processed inside the air conditioning unit.

 

 

 

Crack sound is heard.

• This sound is generated by the

 

 

 

 

 

 

 

expansion/contraction of the inlet grille, etc. due

 

 

 

 

to changes of temperature.

 

 

 

 

 

 

 

Remote control display is faint, or

• Has the circuit breaker been tripped?

 

 

 

no display at all.

• Are the batteries inserted in the opposite (+) and

 

 

 

 

(-) directions?

 

 

 

26Cassette- Type Air Conditioner

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Image 26
Heat Controller DMC24CA-1, DMC36CA-1 manual Troubleshooting