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10. MALFUNCTION
Under particular conditions the air conditioner can have operation mal-
functions which often are apparent or determined by accidental causes
or, most of the time, by trivial ones.
Warning!
Before requesting the service centre to intervene, it is recommended to
have simple checks in order to continuously make the best use of the air
conditioner performance as well as to avoid useless service interventions.
DEFECT Possible causes
The air conditioner does not start.
- Is the air conditioner electrically supplied?
- Are there any wrong operation settings on the remote control?
The air conditioner does not signal the “Beep” signal reception
Sent by the remote control?
- Is anything stopping the reception of the infrared signal on the air condi-
tioner? (a beep must be heard).
The remote control display fades when sending a command.
- Is the air conditioner electrically supplied?
- Are there any wrong operation settings on the remote control?
In winter use is the starting of the internal ventilation delayed of a few
minutes or does it suddenly stop and restart after some time?
- It is a normal situation since the air conditioner is equipped with a
thermal sensor inserted in the coil of the indoor unit which optimizes the
operation of the fan till a temperature of 38 °C is reached.
In winter use the external fan turns for a couple of minutes even if the air
conditioner has been turned off.
- È una situazione normale poiché il climatizzatore smaltisce tutto il calore
presente nello scambiatore
Does the air conditioner not cool sufficiently?
- Are the indoor unit air filters dirty or clogged?
- Is the outdoor unit grid clogged?
- Is there an open window?
- Is the temperature on the remote control set regularly?
The indoor unit of the air conditioner has surfaces with condensation.
Especially near the cold air outlet?
- If the room is very humid this phenomenon is considered normal.
- If the room is not excessively humid check the correct direction of the air
flowing out of the air conditioner.
- Open windows.
Does the air conditioner not heat sufficiently?
- Are the indoor unit air filters dirty or clogged?
- Is the outdoor unit grid very clogged?
- Is the temperature set on the remote control correct?
- If the indoor unit is installed very high, due to the hot air stratification
phenomenon, it is recommended to set the temperature on the remote
control with an increase of 4/5 °.
- During heat pump operation, frost accumulates on the surface of the
outdoor unit which reduces the efficiency of the air conditioner.
Such frost is melted and removed with the “defrosting” operation entirely
managed by a microprocessor.
With severe outdoor temperatures (-8 °C) or high humidity (90% U.R.),
the defrosting cycles will be more frequent and in such case it will be
necessary to resort to another source of additional heat.
If the air conditioners emits strong odours?
- Have the filters been cleaned?
- Has ordinary maintenance been carried out?
The air conditioner is noisy?
- When the air conditioner starts to cool or stops during heating, it is
possible to hear noises such as rustlings or gurglings due to the cooling
liquid’s circulation inside the conditioner;
- Upon the air conditioner’s starting or turning off, creaks may be heard due
to dilatation.
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