User Manual -
DVC/DVH 09/12/18/24 Series
Page 16
Troubleshooting
When troubles occur, please check the following points before contacting a repair company.
Problem
Possible Causes
Solution
Poor Cooling
Performance
Temperature setting may
be higher than ambient
room temperature
Lower the temperature setting
The heat exchanger on the
indoor or outdoor unit is
dirty
Clean the affected heat exchanger
The air filter is dirty
Remove the filter and clean it
according to instructions
The air inlet or outlet of
either unit is blocked
Turn the unit off, remove the
obstruction and turn it back on
Doors and windows are
open
Make sure that all doors and
windows are closed while
operating the unit
Excessive heat is generated
by sunlight
Close windows and curtains
during periods of high heat or
bright sunshine
Too many sources of heat
in the room (people,
computers, electronics,
etc.)
Reduce amount of heat sources
Low refrigerant due to leak
or long-term use
Call for service
SILENCE function is
activated(optional function)
SILENCE function can lower
product performance by reducing
operating frequency. Turn off
SILENCE function.
Troubleshooting
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