Phenomenon Cause or check points
Normal Performance inspection
The system does not restart immediately.
 
The product has a 3 minute time elapse to protect the system due to wear 
that may occur during the restart cycle.  This system will be activated if 
there is any interruption to the power supply for your air conditioner at any time
Noise is heard
 
During unit operation or at stop, a swishing or gurgling noise may be heard.  
At 
 2-3 minutes after unit start, this noise is more noticeable.  
(This noise is generated by refrigerant 
 in the system.)
 
During unit operation, a cracking noise may be heard. This noise is generated 
by the casing expanding or shrinking because of temperature changes.
 
Should there be a loud noise from air   in the unit operation, the 
air   may be too dirty. Normally it should be cleaned every 15 days.
Odours  are generated.
 
This is because the system circulates smells from the interior air such as the 
odours of furniture, paint, cigarettes.
Mist or steam are blown out.
 
During COOL or DRY operation, indoor unit may blow out mist.  
This is due to the sudden cooling of indoor air.
In dry mode, fan speed can’t be changed.
 
In DRY mode, when room temperature becomes lower than  
temperature setting +2°C, unit will run intermittently at LOW  
speed regardless of FAN setting.
Multiple check
 
The circuit breaker switch is “ON”, but not “off”?
 
Is there a power failure? 
 
Is fuse blown out?
Poor cooling
 
Is the air   dirty? Normally it should be cleaned every 15 days.
 
Are there any obstacles before inlet and outlet?
 
Is temperature set correctly?
 
Are there some doors or windows left open?
 
Is there any direct sunlight through the window during the cooling operation? 
(Use curtain)
 
Are there too many heat sources or too many people in the room during 
cooling operation?
Trouble shooting
   
   
 
7