61 69-2718ES—01
If you have difficulty with your thermostat, please try the following suggestions. Most problems can be corrected quickly and easily.Display is
blank
•Checkcircuitbreaker andresetifnecessary.
•Makesurepowerswitchat heatingandcoolingsystemison.
•Makesurefur nacedoorisclosedsecurely.
•MakesureC wireisconnected(seepage13).
Cannot change
system setting
to Cool
•CheckFunction 1: System Type to make sure it is set to match your heating
and cooling equipment (see page 50).
Fan does
not turn on
when heat is
required
•CheckFunction 3: Heating Fan Control to make sure it is set to match your
heating equipment (see page 51).
Cool On or Heat
On is flashing
on the screen
•Compressorprotection featureisengaged.Wait5minutesforthesystemto
restart safely, without damage to the compressor.
Troubleshooting
69-2718ES_A.indd 61 8/13/2012 3:01:51 PM