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Dometic thermostat problems


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Our a.c. system quit today and none of the usual resets are working. I can't see how to open the Dometic thermostat to check the connections and I don't wish to just break it off the wall. There doesn't seem to be any useful info available online, or on my go-to, YouTube. Surely, someone knows how to do this, probably many someones... Just not this someone. TIA Jay

Edit: The zone 1 number is blinking continuously, regardless of what I do. I'm assuming that's a communication issue?? I'd like to eliminate everything at ground level before I venture up on the roof.. Which I may never do....

Edited by Jaydrvr
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