Dometic 3316232.710 Single Zone AC Thermostat Control Kit

The Dometic 3316232.710 is the single zone thermostat control kit for a Dometic rooftop air conditioner. It's the part that actually decides what your air conditioner does. It reads the temperature inside, runs the compressor when you want cool air, calls the furnace when you want heat, and switches an electric heat strip on when one's installed. One zone, one panel, and it comes with the control board, so you're not chasing a second part number to finish the job.

This is a straight programmable setup with an LCD display and a Polar White capacitive touch case. No knobs, no mechanical switches. You tap the panel to change modes and setpoints, and the screen shows you where things stand. Because it's programmable, you can set a schedule and let the air conditioner follow it instead of riding the panel every few hours. Set it warmer while you're out for the day, have it cooling again by the time you're back. That kind of set-and-forget control is the whole point of moving up to a touch panel.

Fan control covers the two things people actually use. Fan speed runs Low, High, or Auto, so you can hold a quiet low speed overnight or let Auto ramp it up when the cabin heats up. Fan mode switches between Auto and On. On Auto the blower cycles with the cooling or heating call. On the On setting the blower runs continuously, which is handy when you want constant air movement to even out temperatures front to back.

The heat side is worth understanding before you order. This board controls three things: cooling, furnace heat, and heat strip heat. Furnace mode fires your gas furnace. Heat strip mode runs the electric resistance heater that some Dometic air conditioners carry for taking the chill off without lighting the furnace. If your unit doesn't have a heat strip, that mode simply won't do anything, and that's fine. The board still runs the cool and furnace functions the same way.

It runs on 12 volt DC, the standard house-battery voltage in most rigs and coaches. That matters at install time. Voltage drop on a long or undersized wire run can make a capacitive-touch programmable board act up, so it's worth confirming you've got clean 12V at the thermostat location and a solid ground. Get the power right and the panel behaves.

Who's this for? Anyone replacing a dead or dated Dometic thermostat, or anyone upgrading an older mechanical control to a programmable touch panel. Because it's single zone, it drives one air conditioner and one area. If you've got a larger setup with two rooftop units and separate zones, this isn't the multi-zone board for that job. For the common one-air-conditioner setup, though, it's the clean, complete answer.

A couple of honest install notes. Confirm the wiring and pinout for your specific Dometic air conditioner before you power anything up, since harness layouts have changed over the years. Mount the panel somewhere out of direct sun if you can, so the LCD stays easy to read. And if your setup sees power interruptions, know that a programmable schedule is only as steady as the power feeding it, so an inline fuse and a stable feed are cheap insurance. None of that is unusual for this kind of control. It's just the stuff that makes the difference between a clean swap and an afternoon of head-scratching.

Bottom line, this is the standard Dometic single zone control kit in Polar White, board included, ready to run cool, furnace, and heat strip from one programmable touch panel. If that matches your air conditioner, it's a straightforward part to put in.