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Dometic DFMD 35121
RV is a 2019 Fuzion 373
I am having issues with a DFMD35121. The blower will kick on and the burner will light, it will then run for a few seconds or sometimes a few minutes and then shuts down. It seems to have low exhaust pressure when running as compared to previous RV's I have owned. I did notice what I think are install issues with mine and am wondering if contributing to the trouble
1. Install manual says to have furnace tight against wall, it is spaced a half inch away.
2. Supposed to have 3 or 4 four inch ducts, keystone installed 1 four inch and 2 two inch.
Could the furnace have restricted airflow and is shutting down?
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