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My nest wont stop the heater, I got Lennox EL195UH045XE36B furnace,

Community Member

Old thermostate wire.jpgwire dia 1.jpgwire dia 2.jpgHello there,

As I mentioned in the subject, my nest runs well for some days and all of a sudden it doesn't stop the heather. My natural gas bill has gone double this year for Nov month compare to last year because of the nest.

I tried two wiring but it happens with both. I have attached my old thermostat wiring and also the two wiring I tried on my nest

Please help to solve this issue otherwise I will have to return this.

Thank you,