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viessmann vito 100 F4 error code

sgtmikeysgtmikey Posts: 14Member
My 14 month old Viessmann desided to crap out on me on the coldest day this year! It's giving me an F4 error code. I figured I would post here while I research it. A voicemail has been left with my installer. In the meantime, does anyone have some advice or a service guy in the Oyster Bay area. Thanks.

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