Question about Honeywell Programmable Thermostat Heater

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My thermostat wont come back on

I turned my elec off at the mains and now my thermostat wont come back on (9100 s honeywell)

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You have to reset the t'stat probably if the t'stat didn't have a battery back-up

Posted on Nov 04, 2012

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Posted on Jan 02, 2017

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1 Answer

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Have you tried pressing the 'Reset' button (with the tip of a pencil)? After doing this, you will have to re-enter the various times. It could be that your rechargeable battery is nearing the end of its useful life, by the way.
George

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