Troubleshooting Tips
Problem
No Display
System fan does not
come on properly
All thermostat buttons
are inoperative
Fan runs continuously
Room temperature is not
correct
Compressor does
immediately when
changing function or
setting.
Fan does not run or turn
changing function or
setting
49-5000400 Rev. 2
Solution
Check for 12 VDC; display is blank
when 12 VDC is not present
Verify that wiring is correct and
fan blade.
Verify that 12 VDC is present; unit
will not operate when 12 VDC is not
present
Check Fan setting. If set to ON, the
fan will run continuously
Verify proper installation per the
installation instructions
There is a 3 minute time delay and
a 3 minute minimum run time for the
This is normal. On some models,
the fan may have a minimum run
15