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I purchased a rev23rf room thermostat about four years ago an installed it sdccessfully. It has worked fine until now. The temperature on the display seems to jump about. eg. it shows 19.2, then 19.8, 20.4 then 19.0 etc.all in the space of about two minutes. This would not happen before. What can I do to fix this?

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T-stats will change on their own from +/- 1/2 degrees, sounds like your in that range

Posted on Mar 24, 2011

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