Honeywell RTH6500WF Thermostat User Manual


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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
• 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(seepage13).
Cannot change
system setting
to Cool
• CheckFunction 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
• CheckFunction 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
• Compressorprotectionfeatureisengaged.Wait5minutesforthesystemto
restart safely, without damage to the compressor.
Troubleshooting
69-2718ES_A.indd 61 8/13/2012 3:01:51 PM
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