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Munchkin 120

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My home is heated (radiant floor) via Munchkin mc120 boiler. We recently got the f13 code for blower motor. Installed in 2008, first blower replace. Also replaced control board recently. I do most work on my house, and this looks like a very easy replacement, but it looks like there's a sequence to it- can anyone share they're experience? Apparently this is a very, very common project with these units. Yippee!
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