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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
Cannot
change system
setting to Cool
Fan does
not turn on
when heat is
required
"Wait" appears
on the screen
Heat pump
issues cool air
in heat mode,
or warm air in
cool mode
Heating or
cooling system
does not
respond
Heating
system is
running in cool
mode
69-2815EFS—07
• 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.
• Check that System Setup screen "Your thermostat controls" or "Your
system type" is set to match your heating and cooling equipment.
• Check that System Setup screen "Your fan control" is set to match your
heating equipment.
• Compressor protection feature is engaged. Wait 5 minutes for the system
to restart safely, without damage to the compressor.
• Check your settings for correct system setup. See "Type of changeover
valve" on page 7.
• Touch
SYSTEM
to set system to Heat. Make sure the temperature is set
higher than the Inside temperature.
• Touch
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 and 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.
• Check that System Setup screen "Your thermostat controls" or "Your
system type" is set to match your heating and cooling equipment .
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