Fujitsu AOU12C1, ASU9C1, ASU12C1, AOU9C1 manual Trouble Shooting, En-16

Models: AOU9C1 AOU12C1 ASU9C1 ASU12C1 Cooling Model room air conditioner WALL MOUNTED TYPE

1 21
Download 21 pages 63.67 Kb
Page 18
Image 18
TROUBLE SHOOTING

TROUBLE SHOOTING

In the event of a malfunction (burning smell, etc.), immediately stop operation, disconnect

WARNING! the Power and consult authorized service personnel.

Merely turning off the unit’s power switch will not completely disconnect the unit from the power source. Always be sure to disconnect the Power or turn off your circuit breaker to ensure that power is completely off.

Before requesting service, perform the following checks:

 

Symptom

Problem

See Page

 

 

 

 

NORMAL

Doesn’t operate immediately:

÷ If the unit is stopped and then immediately started again, the

 

FUNCTIONS

 

compressor will not operate for about 3 minutes, in order to

 

 

 

prevent fuse blowouts.

––––

 

 

÷ Whenever the Power is disconnected and then reconnected to

 

 

 

 

 

a power outlet, the protection circuit will operate for about 3

 

 

 

minutes, preventing unit operation during that period.

 

 

 

 

 

 

Noise is heard:

÷ During operation and immediately after stopping the unit, the

 

 

 

sound of water flowing in the air conditioner’s piping may be

 

 

 

heard. Also, noise may be particularly noticeable for about 2

 

 

 

to 3 minutes after starting operation (sound of coolant flowing).

––––

 

 

÷ During operation, a slight squeaking sound may be heard. This

 

 

 

 

 

is the result of minute expansion and contraction of the front

 

 

 

cover due to temperature changes.

 

 

 

 

 

 

Smells:

÷ Some smell may be emitted from the indoor unit. This smell is

 

 

 

the result of room smells (furniture, tobacco, etc.) which have

––––

 

 

been taken into the air conditioner.

 

 

 

 

 

 

 

 

Mist or steam are emitted:

÷ During Cooling or Dry operation, a thin mist may be seen

 

 

 

emitted from the indoor unit. This results from the sudden

 

 

 

Cooling of room air by the air emitted from the air conditioner,

––––

 

 

resulting in condensation and misting.

 

 

 

 

 

 

 

 

Airflow is weak or stops:

÷ The fan may operate at very low speed during Dry operation

7

 

 

or when the unit is monitoring the room’s temperature.

 

 

 

 

 

 

 

 

 

÷ During SUPER QUIET operation, the fan will operate at very

7

 

 

low speed.

 

 

 

 

 

 

 

 

 

÷ In the monitor AUTO operation, the fan will operate at very

7

 

 

low speed.

 

 

 

 

 

 

 

En-16

Page 18
Image 18
Fujitsu AOU12C1, ASU9C1, ASU12C1, AOU9C1, Cooling Model room air conditioner WALL MOUNTED TYPE manual Trouble Shooting, En-16