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The word "filter" is flashing on thermostat. The filter is clean. What should I do?

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    Have you tried reading the manual for your thermostat? – ThreePhaseEel Jun 30 at 17:00
  • Generally there is a button press sequence or something in the manual that will let you know how to reset the filter timer. – IronEagle Jul 2 at 0:51
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The thermostat doesn't actually have a way to check your filter to see whether it is clean or not. The flashing "filter" turns on based on time - every 3 months. Resetting it (look in your manual) will make it start flashing in another three months.

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