Thermostat not working, no battery in unit, NO HEAT!! Help

closed as unclear what you're asking by mmathis, Machavity, Daniel Griscom, ThreePhaseEel, Tyson Feb 10 at 10:14

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  • Can you post photos of the wiring at both ends? Also, what make/model is your furnace/air-handler? – ThreePhaseEel Feb 8 at 1:36
  • no battery in unit ... does that mean that you want to know what size battery you should use? – jsotola Feb 8 at 6:32

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