Troubleshooting - Lutron TH8321WF1043 Guide De L'utilisateur

Troubleshooting

If you have difficulty with your thermostat, try these suggestions. Most problems can
be corrected quickly and easily.
Screen is blank
Screen is difficult
to read
Red light is on
Heating or cooling
system does not
respond
33-00066EFS—03
• 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.
• Change screen brightness using Preferences menu (see page 32).
• If thermostat is in Emergency Heat mode, the red light is normal. It shows that the thermostat is
in Emergency Heat mode.
• If thermostat is not in Emergency Heat mode, an alert is active. Check message on the thermostat
screen.
• 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 & 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.
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