Question about Carrier Heating & Cooling
I'm not seeing your carrier tstat, is that the model number?
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Posted on May 10, 2017
Testimonial: "The carrier termostat is a 40SMC028N. I looked power directly from the board to feed the new tstat (MCO MH-8) L and N connectors. Then I disconnected the fan connector from the mainboard (INDOOR FAN - 3 cables) and connected it to the MCO HI,ME and LO connectors. I can hear the fans starting when I order it from the new tstat. I hope I'm doing everything well up to these point. Now I need to connect the Valve ON / OFF connectors from the new stat to the carrier and I don't know where to get the signal out on the carrier board (maybe from the CDU connection).Any suggestion??"
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