When your Atwood 89-AC series furnace stops igniting reliably, the ignition control circuit board is one of the first components to suspect. This is the genuine Dometic replacement board -- part number 41-1442, also referenced as 37515 -- engineered specifically for the direct spark ignition system used in the 89-AC family of RV furnaces. Drop-in fitment means no wiring modifications and no guesswork.
The ignition control board is the brain of your furnace's startup sequence. It manages spark timing, monitors flame sense feedback, and controls the gas valve and blower motor relay sequence. When this board fails, symptoms typically include a furnace that attempts to start but locks out, a blower that runs without ignition, or a unit that clicks repeatedly without ever lighting a flame.
This Dometic board is purpose-built for the 89-AC series platform -- covering the 89-I AC, 89-II AC, 89-III AC, and AC 82 model variants. Because it matches the original design exactly, installation involves removing the failed board and reconnecting the existing wiring harness to the same terminals -- no adapters, no splicing.
Designed exclusively for the Atwood 89-AC furnace family. Mounts to the existing bracket and connects to the factory wiring harness without modification.
Controls the DSI sequence: blower pre-purge, spark generation, gas valve opening, and flame sense confirmation -- all matched to the 89-AC timing profile.
Operates on 24 VAC as supplied by the furnace transformer. Verify your furnace's voltage before ordering if you are unsure of your model variant.
At just 0.3 lbs, this compact board adds negligible weight and fits within the furnace cabinet without clearance issues.
This board is confirmed compatible with the following Atwood (now Dometic) 89-AC series furnace models:
If your furnace model is not listed above, cross-reference the original board part number printed on the existing circuit board label before ordering to confirm compatibility.
Replacing the ignition control board is a straightforward procedure for anyone comfortable working with low-voltage RV electrical systems. The general process involves: