Installation Manual

69-2815EFS—01 10
Troubleshooting
If you have difficulty with your thermostat, please try the following suggestions. Most
problems can be corrected quickly and easily.
Display is
blank
• Checkcircuitbreakerandresetifnecessary.
• Makesurepowerswitchatheatingandcoolingsystemison.
• Makesurefurnacedoorisclosedsecurely.
• MakesureCwireisconnected.
Cannot change
system setting
to Cool
• CheckthatSystemSetupscreen“Yourthermostatcontrols”or“Yoursystem
type” is set to match your heating and cooling equipment.
Fan does
not turn on
when heat is
required
• CheckthatSystemSetupscreen“Yourfancontrol”issettomatchyour
heating equipment.
“Wait” appears
on the screen
• Compressorprotectionfeatureisengaged.Wait5minutesforthesystemto
restart safely, without damage to the compressor.
Heat pump
issues cool air
in heat mode,
or warm air in
cool mode
• CheckyoursettingforSystemSetupscreen“Typeofchangeovervalve”to
make sure it is properly configured for your system (see page 66).
Heating or
cooling system
does not
respond
• TouchSYSTEM to set system to Heat. Make sure the temperature is set
higher than the Inside temperature.
• TouchSYSTEM to set system to Cool. Make sure the temperature is set
lower than the Inside temperature.
• Checkcircuitbreakerandresetifnecessary.
• Makesurepowerswitchatheatingandcoolingsystemison.
• Makesurefurnacedoorisclosedsecurely.
• If“Wait”isdisplayed,thecompressorprotectiontimerison.Wait5minutes
for the system to restart safely, without damaging the compressor.
Heating system
is running in
cool mode
• CheckthatSystemSetupscreen“Yourthermostatcontrols”or“Yoursystem
type” is set to match your heating and cooling equipment .