Stop chasing down a discontinued or failing Dometic "black box" board. The Dinosaur Electronics 47-0029 (also referenced as the 3850712.01) is a direct replacement for Dometic's 3850712-xxx series control board, engineered to restore reliable 2-way and 3-way refrigerator operation in dozens of Dometic absorption fridge models. It ships with a built-in ignitor, a removable cover, and a 3-year manufacturer warranty -- no separate ignitor module required.
The Dometic 3850712-xxx "black box" control board is a common failure point in older Dometic 2-way (AC/LP) and 3-way (AC/LP/DC) absorption refrigerators. When the original board fails, the fridge may refuse to light on LP, stay lit only briefly, or display a constant check light. The Dinosaur Electronics 47-0029 restores all control and ignition functions with an upgraded design that has been field-proven in RV service shops and DIY installs for years.
This board handles the full ignition sequence, flame sensing, and mode control for compatible Dometic units. It is a plug-in replacement designed specifically for the 3850712-xxx footprint -- not a universal board requiring modification.
Integrated ignitor module eliminates the need to source a separate ignitor -- a common extra cost with generic board replacements.
Compatible with both AC/LP (2-way) and AC/LP/DC (3-way) Dometic refrigerator configurations using the 3850712-xxx board.
Onboard fuse protection guards the control circuitry against voltage spikes and short circuits common in RV electrical systems.
Includes a variable temperature adjustment feature -- particularly useful on fixed-temp refrigerator models that previously offered no fine-tuning.
The 47-0029 replicates and improves on the Dometic factory ignition cycle behavior:
The 47-0029 is designed for straightforward board-swap installation. The existing Dometic wiring harness connector plugs directly into the replacement board. An easy-to-remove cover is included to protect the board after installation. The board is green in color and weighs approximately 0.4 lbs.
The 47-0029 has been confirmed compatible with the following Dometic refrigerator models:
If your Dometic refrigerator model number does not appear in this list, verify against the board part number on your existing unit before purchasing.