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noungning t1_iya5yi0 wrote

I have a common wire on my AC but not on my boiler, so it works fine in the summer, but not in the winter lol. I tried almost everything in 2018 and finally gave up. That old one is in a box somewhere in my closet.

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internetTroll151 t1_iybbzj2 wrote

The common wire should provide continuous power, even when the system is off

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