Dometic 9610005457 CCC2 Multi-Zone A/C Control Board

When a Dometic ducted rooftop system stops cooling on command, most people reach for the thermostat first. But the part that actually switches the compressor, the fans, and each zone is the control board working behind the scenes. This is that board, the multi-zone control module for Dometic's Comfort Control Center 2 system, better known as CCC2. If your CCC2 setup has gone dark, quit responding, or started throwing zones on and off at random, a failed board is high on the list of suspects.

The symptoms of a bad board are pretty recognizable once you've seen a few. The thermostat powers up but nothing kicks on. One zone works and another is stone dead. The fan runs but the compressor never engages, or the whole thing short-cycles for no reason. Sometimes the display goes blank entirely. None of that is the air conditioner's fault. It's the control logic, and that logic lives on this board.

Multi-zone is the key word here. On a bigger coach with more than one rooftop unit, the CCC2 system lets you run each area as its own zone from a single thermostat. Bedroom cool, living area a little warmer, whatever the crew wants. This board is what coordinates all of it. It reads the thermostat, talks to each air conditioner, and manages the relays that fire the compressors and blowers. Lose the board and you don't just lose one room, you lose the coordinated system.

It's listed as a replacement across a wide spread of Dometic units, including the B59530, B57915, and B59516, along with the 640310, 640315, and 640316. It also covers systems running the 3314082.000 and 3314082.011 CCC2 thermostats. If your rig is running any of those, this is the board that belongs in it. Before you order, pull your old board and check the part number against 9610005457, because Dometic has used several board revisions over the years and you want the one that matches your system's wiring.

One thing worth being clear about. This is the control board, not the wall thermostat. The thermostat is the piece you touch, the board is the piece that does the work, and they're sold separately. If your thermostat display is dead but the board is fine, or the other way around, replacing the wrong one won't fix anything. When in doubt, a quick continuity check or a call to a tech who knows Dometic controls saves you buying both.

Swapping the board is well within reach of a handy owner who's comfortable working around a rig's 120-volt and low-voltage control wiring. Kill the shore power and the battery disconnect first, always. Label every wire as it comes off, snap a photo of the old board before you touch it, and land each lead in the same spot on the new one. It's easy to get in a hurry and put a plug where it doesn't belong. Take your time and it's a straightforward afternoon job.

Who needs this? Anyone whose CCC2 climate control has quit and who'd rather fix the system they already have than tear out a whole rooftop unit. It's a far cheaper path back to a comfortable rig than a full A/C replacement, and it keeps you on the same Dometic controls you already know how to use. A dead board doesn't mean the whole climate system is done. More often than not, it just means the brain needs swapping out and the rest of the hardware is fine. We keep genuine Dometic parts in stock and ship them out fast, so you're not stuck sweating it out for a week waiting on a board. If you're not certain this is the exact part your system wants, send us your A/C model and thermostat number and we'll help you confirm before you buy.