7 BASIC TROUBLESHOOTING
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C A U T I O N
•
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 Flow Sound
While the system is being started or stopping, sound from the
refrigerant flow may be heard.
• Smells from Indoor Unit
Smell adheres on indoor unit after a long period of time. Clean
the air filter 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
indoor unit heat exchanger due to water freezing or melting.
• Click sound on Outdoor Unit
When the system main switch is on, click sound may be heard.
This sound comes from electrical expansion valve reset function.
• Chatter sound on Outdoor unit.
During system starting, stopping or defrosting operation,chatter
sound might be heard. This is due to pressure equalising
process of piping.
No operation
Check whether the SET TEMPERATURE is set at the correct
temperature.
Not cooling well or heating well
-
Check for obstruction of air flow of the outside or inside
units.
-
Check if too much heat source exists in the room.
-
Check if the air filter 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
operating 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
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Content of Trouble
-
Alarm Code no. on Liquid Crystal Display
?
N O T E
Except for a long period of shutdown, keep the main switch ON, since the
oil heater is energised when the compressor is stopped.
BASIC TROUBLESHOOTING
PMML0354A rev.1 - 03/2015
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