Dometic Comfort Control Center II to 5-Button Conversion Kit

If your Dometic ducted heat pump is running a Comfort Control Center II setup and you want to move to a 5-button Comfort Control Center thermostat, this is the kit that makes it happen. It's the conversion hardware, the control board, the wiring, and the freeze sensor, packaged together so your rooftop unit talks to the 5-button head correctly. Part number 3313107.107.

Here's the situation it solves. Dometic rooftop air conditioners and heat pumps have used a few different thermostat generations over the years. The control board inside the ceiling assembly has to match the thermostat on the wall. Swap one without the other and the system either throws errors or leaves half the modes locked out. This kit gives you the board and sensor side of that equation so a 5-button Comfort Control Center thermostat can run a ducted heat pump properly.

What you get in the box is straightforward. The control board that mounts in the unit. The wiring to tie it in. And the freeze sensor that keeps the evaporator coil from icing up when you're running the air conditioning hard in humid weather. That freeze sensor matters more than people think. Mount it right, on the coil where Dometic's instructions call for it, and the system cycles the way it should. Get lazy with the placement and you'll chase short-cycling problems that have nothing to do with the board.

This is built for ducted heat pump models specifically. If your rig has ductwork in the ceiling feeding multiple vents, that's a ducted system and you're in the right place. Non-ducted units, the kind that blow straight out of the ceiling assembly into one room, use different parts. And because it's a heat pump kit, it supports both cooling and heat-pump heating, so you keep your reverse-cycle heat when the mornings get cold.

A word on the thermostat itself. This kit is the conversion hardware. The control board, the wiring, the freeze sensor. Check whether your setup already has the 5-button Comfort Control Center thermostat on the wall or if you need to add one to finish the job. Running the new board without the matching 5-button head is where a lot of folks get stuck with error codes and locked modes.

Who's this for? RV and coach owners who've got a Dometic ducted heat pump and either lost a control board, want to standardize on the 5-button interface, or are pulling an older thermostat setup forward. It's a real electrical job. You're working with 120-volt supply to the unit and low-voltage thermostat wiring, so if you're not comfortable in a rooftop assembly, have a qualified RV tech handle it. Done right, it's a clean upgrade that gets your air and heat behaving predictably again.

Plan the install for a couple of hours if you're doing it yourself. You'll pull power to the unit, open the ceiling assembly, swap the control board, route the new wiring, and set the freeze sensor on the coil. Take a photo of the existing wiring before you disconnect anything, that habit alone saves more headaches than any tool. Once it's back together and powered up, the 5-button thermostat should run through cool, heat, fan, and zone functions without throwing a fault. If it does throw a code, nine times out of ten it traces back to a wiring position or a sensor that isn't seated where it belongs.

One more thing worth saying up front. Match the kit to your unit before you buy. Dometic makes several conversion kits for different thermostat transitions, and they're not interchangeable. This one is the Comfort Control Center II to 5-button Comfort Control Center path for ducted heat pumps. If that's your setup, it's exactly the part you need. If you're not sure which generation you're running, count the buttons on your current wall thermostat and check the model tag on your rooftop unit, and we're happy to help you confirm before you order.