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TROUBLESHOOTING
Symptom Possible Cause Correction Action
No Cool
1. Cooling system
requires service.
Heat, Cool or Fan
Runs Constantly
1. Possible short in
wiring.
2. Possible short in
thermostat.
3. Possible short in heat/
cool/fan system.
4. FAN Switch set to Fan
ON.
Check each wire connection
to verify they are not shorted
or touching together. No
bare wire should stick out
from under terminal block.
Try resetting the thermostat
as described above. If the
condition persists, the
manufacturer of your system
can instruct you on how to
test the Heat/Cool system
for correct operation. If the
system operates correctly,
replace the thermostat.
Displayed
Thermostat
Reading and
Thermometer
Disagree
1. Thermostat display
setting
requires adjustment.
The display can be adjusted
+/- 5 degrees. Adjust the
Temperature Display Adjust
settings within Thermostat
Settings (see Main Menu
options).
Furnace (Air
Conditioner)
Cycles Too Fast
or Too Slow
(narrow or wide
temperature
swing)
1. The location of the
thermostat and/or
the size of the Heat-
ing System may be
inuencing the cycle
rate.
Adjust the Heat Cycle Rate
or Cool Cycle Rate in the
Advanced Installer Menu.
Troubleshooting