Lv 7

Honeywell CT3600/CT3697 Programmable Thermostat No display. Changed batteries, cleaned terminals. Nothing. Suggestions?

Its had this problem off & on in the past but I could always get something by jiggling it.

This time nothing. I see replacements are cheap but is it possible to get one where I don't have to remove the backing that is already there? I just want my heat to work. I hate the darn thing. It has like 9 and 4 pins in the back of it.


Already replaced the batteries even thought told one ones were not dead.

Update 2:

And just like that, out of nowhere, it started working again. Better cancel the walmart pickup order.

3 Answers

  • Barry
    Lv 4
    3 weeks ago
    Favorite Answer

    These devices can fail. It seems like yours has.

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  • Anonymous
    3 weeks ago

    Replace the thermostat.  It is broken.

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  • 3 weeks ago

    test the wiring before you spend money

    • Never
      Lv 7
      3 weeks agoReport

      iTS $19 at walmart and its returnable. And I don't know how to test the wiring but how could it be bad all of a sudden? Isn't it more likely its the thermostat?

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