Question about Honeywell Electronic Programmable Heat/Cool Thermostat - CT3300A100 Heater

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Our TH8000 Series Programmable Thermostat keeps flashing "change filter" even after we changed it. The guide book does not show how to re-set so the flashing stops.

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Try holding the filter button in for three seconds, if that doesn't reset the timer try the filter button and the temp. up button at the same time for three seconds.

Posted on Mar 31, 2008

Per the TH8000 user manual verbatim.

"When a Timer expires, a Reset key appears on the Home Screen. Press Rest key to reset the Timer. Notice that the "Change" reminder disappears from the thermostat screen. If more than one Timer expires at the same time, press the Reset key to reset all expired Timers."

Posted on Apr 05, 2008

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Is the wall warm from ducts in the wall or a refrigerator on the other side?
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