Trouble shooting
Before asking for service, check the following first.
Phenomenon | Cause or check points | |
The system does not restart | When unit is stopped, it won't restart | |
immediately. | immediately until 3 minutes have elapsed | |
| to protect the system. | |
| When the electric plug is pulled out and | |
| reinserted, the protection circuit will work | |
| for 3 minutes to protect the air conditioner. | |
| During unit operation or at stop, a swishing | |
| or gurgling noise may be heard. At first | |
Noise is heard | minutes after unit start, this noise is more | |
| noticeable. (This noise is generated by | |
| refrigerant flowing in the system.) | |
Normal | During unit operation, a cracking noise may | |
Performance | be heard. This noise is generated by the | |
inspection | casing expanding or shrinking because of | |
temperature changes | ||
| ||
| Should there be a big noise from air flow in | |
| unit operation, air filter may be too dirty. | |
Smells are generated. | This is because the system circulates smells | |
from the interior air such as the smell of | ||
| furniture, 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. | |
Does not work at all. | Is power plug inserted? | |
Multiple | ||
Is there a power failure? | ||
check | ||
Is fuse blown out? | ||
Poor cooling | Is the air filter 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 much heat sources or too many | |
| people in the room during cooling operation? |
Application temp. range of air conditioner
17
