Dometic 3316996.900 Refrigerator Power Supply & Eyebrow Control Board

When a Dometic absorption fridge stops holding temperature and the front controls go dark or unresponsive, the problem is usually not the cooling unit. It's the electronics. This is the factory replacement for the power supply board and eyebrow control board that run a whole family of Dometic refrigerators, and swapping it is one of the more satisfying fixes you can do yourself.

Here's what these two boards actually do. The power supply board is the brain. It manages how the fridge draws power, switches between AC shore power, 12V DC, and LP gas on the three-way units, and it tells the cooling system when to fire. The eyebrow control board is the little panel up front, the one with the buttons and status lights you touch to set the mode and temperature. When either one fails, you get the same frustrating symptoms. No lights. A fridge that runs on one power source but not another. Error codes that won't clear. Or a unit that simply won't stay cold.

This part number, 3316996.900, covers a wide swath of the Dometic lineup. It's the correct replacement for the DM2652, DM2852, RM2551, RM2620, RM2652, RM2662, RM2820, RM2852, RM3862, NDM1062, and NDR1292. That's a lot of coverage in one part, which is exactly why it's worth keeping the number handy if you own an older Dometic. Check the model tag inside your fridge against that list before you order and you'll know you've got the right board.

We see these boards fail for a few predictable reasons. Age is the big one. These fridges live a long time, and the electronics eventually give out after years of heat cycling right next to a working cooling unit. Power events matter too. A rough generator start, a shore power surge, or a low-voltage brownout can take out a board that was already tired. And moisture is the quiet killer. Boards mounted in a damp galley or a poorly vented compartment corrode over time, especially around the connectors.

The install itself is straightforward for anyone comfortable pulling a lower front panel and working with a few plug connectors. You'll cut power first, both AC and DC, and shut off the gas. Then it's a matter of removing the trim, unplugging the old boards, and transferring the connectors to the new ones in the same positions. Take a photo before you unplug anything. That one habit saves more headaches than any tool. The eyebrow board mounts up front behind the control panel, and the power board sits down in the lower compartment where you can reach it through the exterior vent or the front strip.

A couple of things worth knowing. This is the genuine Dometic part, not a generic clone, so the connectors land where they should and the board behaves the way the fridge expects. That matters on the three-way units especially, where the board has to manage the gas solenoid and the DC heater alongside the AC element. If you've been chasing an intermittent no-cool problem and you've already confirmed the cooling unit is good, a fresh board is very often the fix.

Who's this for? Anyone keeping an older Dometic alive, whether it's in an RV, a camper, or a boat galley. These absorption fridges are built to run for decades, and it makes no sense to swap a whole unit when the cooling system is fine and only the electronics have quit. A new fridge means pulling cabinetry, re-running the gas line, and a big invoice. A board swap is an afternoon and a fraction of the cost.

One last tip before you order. Write down the exact model number and the old part number off the board you're pulling, and match them against the fitment list. These older Dometic units went through several revisions over the years, and the right part number is what keeps you from a return trip. If it's on the list above, this is your board. Order the correct one, set aside an afternoon, and you'll have cold food and a working control panel again without a service call.