Honeywell UtilityPRO Series Operating Manual page 29

Troubleshooting
Heating or cooling
system does not
respond
Display shows Fan
Auto and ON or
Auto and Circ at
the same time
Thermostat shows
the calendar
screen (year,
date, & month)
when the power is
restored
• 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 11).
• This indicates that the coin cell battery has drained out. Replace the
coin cell battery immediately.
27
UtilityPRO Series
TM
69-2539EFS—01