Honeywell TH8320ZW Operating Manual page 21

In case of difficulty
Heating or cooling
system does not
respond
Display shows
Fan Auto and On
or Auto and Circ
at the same time
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.
• This is normal operation. Auto indicates the thermostat is following the
programmed fan setting. If Auto and On is shown, the fan is scheduled for
"On" during this period (see page 7).
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TH8320ZW
69-2485EFS—05