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not_enuf_toys's avatar
not_enuf_toys
Explorer
Jun 27, 2015

furnace blower motor when thermostat switched to on

First, thanks for taking a look at this. I appreciate any help you can give me. 2007 forest river Salem 30QBSS Suburban furnace Dometic AC Everything worked great at first. ac, furnace, auto, ...
budwich's avatar
budwich
Explorer
Jun 27, 2015
sounds more like your thermostat has the "cool" function selected as opposed to "heat". The fan functon directs power to the appropriate fan unit based on that. Of course, the AC fan needs 120v to run which won't happen on 12v power. Hence, what you are observing appears to be normal.

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