13
Troubleshooting tips.
No display
Check for 24 VAC; display is blank
when 24 VAC is not present.
System fan does not
Verify that wiring is correct.
come on properly
All thermostat buttons
Verify that 24 VAC is present; unit
are inoperative
will not operate when 24 VAC is not
present
Thermostat turns on and
Adjust
temperature
differential
off too frequently
(see
Configuration Mode - Setting
Temperature Differential, Stage 1
and
Stage 2
sections).
Fan runs continuously
Check
Fan Auto/On
switch. If set to
ON
position, fan will run continuously.
Room temperature is
Verify that wall hole is plugged
not correct
with putty or insulation to prevent
airflow from the wall cavity.
Adjust Temperature Offset (see
Configuration Mode - Room
temperature offset
section).
Compressor doesn’t run
There is a 3 minute time delay and
or turn off immediately
a 3 minute minimum run time for
when changing function
the compressor when it turns on/off.
or setting
Fan doesn’t run or turn off
This is normal. On some models, the
immediately when changing
fan may have a minimum run time/
function or setting
off time delay.
Problem not listed above
Press
the
Reset
button once to reset
the thermostat and restore all factory
settings.
Problem Solution
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