Question about Honeywell Programmable Thermostat Heater

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Heater on when not programmed

I have a 2 year old honeywell 5-2 programmable thermostat that turns system on during the night when it shouldn't.  Night time is set for 60deg and at 5:30 should change to 68deg.  This morning at 3:00am the fan was running so I checked the thermostat with following indications: - time was correct - program temperature was wrong - furnace was on, and temp was climbing to wrong temp
I suspect the honeywell, what do you think

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Sounds like a bad t-stat , they have a 5 year warranty on them

Posted on Dec 28, 2008

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