DURASTAR.COM
24
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
Low refrigerant due to leak or long-
term use
Check for leaks, re-seal if necessary and
top off refrigerant
Excessive heat is generated by
sunlight
Excessive heat is generated by sunlight
Too many sources of heat in
the room (people, computers,
electronics, etc.)
Reduce amount of heat sources
Poor Heating
Performance
The outdoor temperature is
extremely low
This model is designed to work down to
-13°F, however, heating performance is
impacted at temperatures below freezing.
Cold air is entering through doors
and windows
Make sure that all doors and windows are
closed during use
Low refrigerant due to leak or
long-term use
Check for leaks, re-seal if necessary, and
top off refrigerant
The unit
starts and
stops fre-
quently
There’s too much or too little
refrigerant in the system
Check for leaks and recharge the system
with refrigerant
Incompressible gas or moisture has
entered the system
Evacuate and recharge the system with
refrigerant
The compressor is broken
Replace the compressor
The voltage is too high or too low
Install a manostat to regulate the voltage
