Basic troubleshooting
10 BASIC TROUBLESHOOTING
CAUTION
• When water leakage from the indoor unit occurs, stop the
operation and contact your contractor
• When you smell or white smoke occurs from the unit, stop the
system and contact your contractor.
This is not abnormal
• Sound from deforming part
During system starting or stopping, and abrading sound might
be heard. However, this is due to thermal deformation of plastic
parts. It is not abnormal.
• Refrigerant ow sound
While the system is being started or stopping, sound from the
refrigerant ow may be heard.
• Smells from indoor unit
Smell adheres on indoor unit after a long period of time. Clean the
air lter and panels or make a good ventilation.
• Steam from outdoor heat exchanger
During defrosting operation, ice on the outdoor heat exchanger is
melted, resulting in making steam.
• Dew on air panel
When the cooling operation continues for a long period of time
under high humidity conditions (higher than 27°C DB/80% R.H.),
dew can form on the air panel.
• Dew on cabinet
When the cooling operation continues for a long period of timer
(higher than 27°C DB/80% R.H.), dew can form on the cabinet.
• Sound for the indoor unit heat exchanger
During the cooling operation, a sound may be heard from the in-
door unit heat exchanger due to water freezing or melting.
No operation
Check whether the SET TEMPERATURE is set at the correct
temperature.
Not cooling well or heating well
- Check for obstruction of air ow of the outside or inside
units.
- Check if too much heat source exists in the room.
- Check if the air lter is clogged with dust.
- Check to see if the doors or windows are opened or not.
- Check if the temperature condition is not within the ope-
rating range.
Abnormal swing louver’s position
Check if the four louver’s position at the air outlet are in same
position.
If trouble still remains...
If the trouble still remains even after checking the above items,
contact your service contractor and inform the following data:
- Unit model name
- Content of trouble
- Alarm code number on liquid crystal display
NOTE
Except for a long period of shutdown, keep the main switch ON,
since the oil heater is energised when the compressor is stopped.
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