Dometic RV A/C Remote Temperature Sensor 3106486.073
Dometic RV A/C Remote Temperature Sensor 3106486.073 — Product description
When a Dometic rooftop air conditioner can't hold a steady temperature or starts short-cycling, a tired remote sensor is often the culprit. This is the genuine Dometic replacement, finished in black with its own cover and a full 20 feet of lead. It reads cabin air temperature accurately so your control board cycles the compressor right. A simple, low-cost fix.
This is the genuine Dometic remote temperature sensor, a direct replacement part for Dometic rooftop air conditioners. If the temperature reading on your RV air conditioner has gone haywire, the unit short-cycles, or it just stops holding a set point, a failed remote sensor is one of the first things worth checking. This is the OEM part that fixes it, MPN 3106486.073, with a full 20 feet of lead wire and its own cover.
Here's what the sensor actually does. Your air conditioner's control board doesn't guess at the cabin temperature. It reads it, and this little sensor is what does the reading. It tells the board how warm the air is so the compressor knows when to kick on and when to shut down. When the sensor drifts or fails, the board gets bad information. That's when you see an RV that runs cold and clammy, cycles on and off every couple of minutes, or blows air that never seems to match the number on the thermostat. Swap in a fresh, accurate sensor and the whole system settles back down.
The 20-foot lead is the useful part here. That length gives you real freedom in where you place the sensing point. You can route the wire from the air conditioner or control board to wherever the return air actually is, instead of being stuck reading temperature right at the unit where it's always a few degrees off. Longer runs also help in bigger fifth wheels and motorhomes where the control and the living space aren't right on top of each other. You've got slack to work with, and you can tuck the excess neatly rather than fighting a lead that's too short.
It's finished in black and comes with its own cover, so the sensing tip stays protected and looks clean wherever you mount it. The cover keeps stray airflow and dust off the element, which helps the reading stay honest over time. Nothing exotic here, just a tidy, purpose-built part that does one job and does it well.
This is a replacement sensor for Dometic air conditioning systems, so the smart move before you order is to confirm your existing sensor's part number or check that 3106486.073 is the one your unit calls for. Dometic used remote sensors across a range of RV air conditioners and control setups, and matching the part keeps the install straightforward. Keep the packaging and the old part handy until you've confirmed the new sensor is reading correctly. If you're replacing like for like, this drops right in.
The install itself is manageable for most owners who are comfortable pulling a cover and handling low-voltage wiring. You'll disconnect power to the air conditioner first, always, then locate the old sensor and its lead, unplug it, and route the new 20-foot lead along the same path. Keep the sensing tip in open air where it can read the room honestly, not buried behind a return grille or tucked against a warm surface. Secure the excess wire so it isn't rattling around, snap the cover in place, restore power, and let the system run a full cycle to confirm it's reading and holding temperature the way it should. Take your time with the routing and it's a straightforward afternoon job.
Who needs this? Anyone chasing a temperature-control gremlin on a Dometic rooftop unit, anyone who has already ruled out the thermostat and the board, and anyone doing a preventive refresh on an older rig before a long trip. Sensors are cheap insurance compared to a compressor that's been short-cycling itself to death. If your air conditioner cools fine but can't hold a steady, comfortable temperature, this is the part that usually brings it back.
We stock the genuine Dometic component, not a look-alike, so you get the fit and the readings the control system expects. Order it, wire it in, and get back to a camper that actually stays the temperature you set it to.
Key Features
- 20 ft lead wire, so you can route the sensing point to where the return air actually is instead of reading temperature right at the unit
- Genuine Dometic OEM part 3106486.073, built to the fit and readings your air conditioner's control board expects
- Includes its own protective cover, keeping the sensing tip clean and shielded wherever you mount it
- Finished in black for a tidy, low-profile look at the mounting location
- Direct replacement for Dometic rooftop air conditioner systems, so a like-for-like swap drops right in
- Restores accurate temperature sensing, curing short-cycling and set-point drift on aging units
- Low-voltage sensor an owner can install with basic tools after disconnecting power
Why Buy from NVN Marine
- Authorized Dometic reseller, full manufacturer warranty
- NMEA member and ABYC certified, advice from real boat techs
- Same-day shipping before 3 PM ET on in-stock items
- NY headquarters and Fort Lauderdale flagship retail store
Technical specifications
| Title | Dometic Remote Temperature Sensor with Cover, Black, 20 ft Lead |
|---|---|
| Brand | Dometic |
| Manufacturer Part Number | 3106486.073 |
| UPC | 0713814312091 |
| Color | Black |
| Lead Length | 20 feet |
| Component Type | Remote temperature sensor |
| Included Accessories | Sensor cover |
| Compatibility | Dometic RV air conditioners |
| Application | Rooftop air conditioner air-temperature sensing |
| Part Category | Genuine OEM replacement part |
| Product Type | RV Air Conditioner Parts |
Frequently asked questions
What does this Dometic remote sensor do?
It reads the air temperature your air conditioner's control board uses to decide when to run the compressor. An accurate sensor lets the unit hold a steady set point. A failing one causes wrong readings, short-cycling, and a cabin that never quite matches the thermostat.
How long is the lead wire?
A full 20 feet. That gives you plenty of slack to route the sensing tip to where the return air actually is, and it's more than enough for larger fifth wheels and motorhomes where the control and living space aren't right on top of each other.
Does it come with a cover?
Yes. The sensor ships with its own cover, so the sensing tip stays protected and looks clean at the mounting location. It's finished in black.
Which Dometic air conditioners does it fit?
It's a replacement remote sensor for Dometic rooftop air conditioning systems. Before ordering, confirm your existing sensor's part number or that your unit calls for 3106486.073, so you get a like-for-like match.
How do I know my sensor has failed?
Classic signs are an air conditioner that short-cycles on and off, blows air that never matches the thermostat number, or can't hold a comfortable set point even though it cools fine. Once you've ruled out the thermostat and control board, the remote sensor is the next suspect.
Is this a genuine Dometic part?
Yes. It's the genuine Dometic component, MPN 3106486.073, not a look-alike. That matters because the control board is calibrated around the readings this sensor provides.
Can I install it myself?
Most owners who are comfortable pulling a cover and handling low-voltage wiring can. Always disconnect power to the air conditioner first, unplug the old sensor, route the new 20-foot lead along the same path, mount the tip in open air, and restore power to test.
Where should I mount the sensing tip?
Put it in open return air where it can read the room honestly. Don't bury it behind a grille, tuck it against a warm surface, or coil it near a heat source, or it'll feed the board a skewed temperature.