69-1722
16
Troubleshooting Tips
If . . .
Then . . .
Display is
blank.
Check that fresh AAA alkaline batteries
are installed as marked on the battery
holder.
Temperature
settings do
not change.
Check that the temperature settings are:
•
Heating 40°F to 90°F(4.5°C to 32°C).
•
Cooling 50°F to 99°F (10°C to 37°C).
Heating
system does
not turn on.
•
Set the system to Heat by pressing
the System button.
•
Check the heat temperature setting to
be sure it is set above the room
temperature and “Heat On” shows
solidly in the display.
•
Check the circuit breaker to be sure it
is not tripped.
•
Check power switch at heating and/or
cooling system to be sure it is on.
•
Check the furnace door to be sure it is
closed securely.
•
Wait five minutes for the heating
system to respond.
•
If all of this was checked, contact your
local heating and cooling contractor.