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

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Thermostat screen blank (was functional this morning) & need to turn AC on

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Have you checked the batterys?

Posted on Mar 24, 2011

  • 1 more comment 
  • pambooconnor Mar 24, 2011

    saw them but do we just get replacements & see if they work (not sure how else to test) & they are odd sizes that we don't have extras of

  • mpcheesman1
    mpcheesman1 Mar 24, 2011

    yes i would start with the batteries,if the t stat is programable,you need good battieries to run the program.

  • pambooconnor Mar 25, 2011

    thanks! it was working again this morning!! i bet we will need new batteries soon!

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