Honeywell RTH8580WF Thermostat User Manual


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69-2715ES—01 64
Troubleshooting
Heating or
cooling system
does not
respond
• PressSYSTEM to set system to Heat. Make sure the temperature is set
higher than the Inside temperature.
• Press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&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 (see page 48).
Heating system
is running in
cool mode
• CheckFunction 0170: System Type to make sure it is set to match your
heating and cooling equipment (see page 54).
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