Question about Honeywell Programmable Thermostat Heater

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New batteries ...display not working

Okay I thought I would be helpful today as the wifey when I noticed that our battery light was blinking on our honeywell thermostat. So I went to town and purchased some new batteries and came home and put them in. As soon as I put them in... the LED or LCD (or whatever it is) display went blank and the thermostat would not work. I was talking to my son and he said, "see if there is a reset button"...well didn't find that but did notice when I took a kitchen table knife and put it in between the two batteries the display came back on and it would work, but as soon as I take it away it is blank again. connection problem with the batteries? I am sure hubby will know , but I am just wondering. Thank you!

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  • hsb0 Nov 26, 2008

    Thank you. I am sure that will work!



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Remove the batteries and pull the metal tabs at each end stretching out a little the reinstall the batteries

Posted on Nov 26, 2008


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  • 2 Check for oxidation buildup on battery contacts. Use electrical contact cleaner and carefully clean the battery contacts of any oxidation buildup.
  • 3 Reset the system switch.

  • Read more: How to Troubleshoot Honeywell Thermostats '

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