Looking for Replacement Control Board for Dometic DFLD 40121 Furnace
Updated 10/08/2026 | Published 10/07/2026
Question:
will this work on the dometic DFLD 40121 furnace? DMC39JF
asked by: Kerry H
0
Expert Reply:
Hey Kerry, I did some digging on this and yes the part # DMC39JF is the correct replacement for your Dometic DFLD 40121 furnace so this is what you are looking for. How old is your furnace?
expert reply by:
Jameson C
0
Control Board
(click to enlarge)
(click to enlarge)
Product Page this Question was Asked From
Replacement Universal Ignition DC Furnace Control Board for Atwood Hydro Flame Furnaces
- Accessories and Parts
- RV Furnace
- Control Board
- Dometic
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David
10/8/2026
I bought this one 2 months ago in WI. It was easy to replace the old with the new.