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Is the 'C' wire in my thermostat labeled as 'B'? : r/ecobee
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How to identify a thermostat wire
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Does anyone know if my Trane "B" wire can be used as a "C" wire? Also why is the "W1" wire also lableled "O"? : r/hvacadvice
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W2 and O/B on my hvac .
I'm getting heat when calling for air conditioning
