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Troubleshooting
If you have difficulty with your thermostat, please try the following suggestions.
Most problems can be corrected quickly and easily.
Display is
blank
Cool On or Heat
On is flashing
on the screen
Heating or
cooling system
does not
respond
• 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.
• Compressor protection feature is engaged. Wait 5 minutes for the system to
restart safely, without damage to the compressor.
System
• Press
to set system to Heat. Make sure the temperature is set higher
than the Inside temperature.
System
• Press
to set system to Cool. Make sure the temperature is set lower
than the Inside temperature.
• Wait 5 minutes for the system to respond.
39
69-2736EFS—05
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