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Room temperature
is cooler than
current setting and
air conditioner is
still running.
Thermostat is operating in
Pre-cool mode. If the
thermostat displays PrE,
wait until the Pre-cool event
is complete.
To cancel, press and hold
Run Program for three
seconds until DONE is
displayed.
If PrE does not display, contact your local
heating contractor or Energy Utility.
Outdoor
temperature is not
displayed or is
incorrect.
Installer did not activate this
option.
Outdoor sensor is connected
incorrectly.
Filter expired.
Contact installer or service technician.
Press i key twice for outdoor temperature
when filter expiration shows on display.
Refer to the Filter Indicator section.
Table 3. Troubleshooting. (Continued)
Symptom Possible Cause Action