How to Reset a Dometic RV Thermostat (By Model)

Dometic isn’t one thermostat. It’s at least four. An analog slide-switch model with no reset at all, a digital single-zone LCD thermostat, a newer Bluetooth touchscreen single-zone thermostat (Dometic calls this the “CT”), and a button-based multi-zone thermostat (the CCC2, for RVs with more than one zone). They don’t share a reset procedure. Find yours below before you start pressing buttons.

Find your model first

Look at the thermostat on your wall, not the AC unit outside:

• Slide switches, no screen at all → Analog thermostat. Skip to the analog section: there’s no button sequence to press.
• Small LCD screen with a “+” and “-” button and one Mode button, single zone → Single Zone LCD Thermostat.
• Touchscreen-style flat panel with a Bluetooth icon → CT (Capacitive Touch) Thermostat.
• LCD screen with a ZONE button and options for “Zone 1/2/3/4” → CCC2 multi-zone thermostat.

The model number is printed on the back of the thermostat (you’ll need to pull it off its base) or on the wiring/control kit label behind it.

Dometic Single Zone LCD Thermostat (3313189, 3313192, 3313193, 3313194)

This is the classic Dometic digital thermostat: small square LCD, a “+” button, a “-” button, and one “On/Off Mode” button. Model 3313189.000 (Cool/Furnace, no heat strip) uses the identical button layout and procedure as the 3313192-3313194.XXX series.

1. Make sure the thermostat is in the Off condition.
2. Press and hold the “+” button, and while holding it, also press and hold the On/Off Mode button, for 3 seconds.
3. The LCD will show “- -“.
4. Press the On/Off Mode button again to turn the system off. This completes system initialization.

What this actually does: Dometic calls this “System Initialization,” not a factory reset. It re-syncs the thermostat with the RV’s electronic control board. It’s also when you set the furnace On/Off differential (1°F or 2°F): with the system off, hold “-“ and On/Off Mode for 3 seconds, release both, then press “+” to toggle between “d1” and “d2.”

Dometic CT (Bluetooth Capacitive Touch) Thermostat

This is Dometic’s current single-zone thermostat: a flat touch-sensitive panel (no physical buttons) with a Bluetooth icon, controlled by the Dometic Climate Control App as well as on-device touch. It replaced the LCD thermostat above in newer RVs.

1. Make sure the CT thermostat is Off.
2. Simultaneously press and hold the Up (△) button and the Mode button for 3 seconds.
3. The LCD will show “- -“. This completes system initialization.
4. Set the furnace differential the same way as the LCD model above (Down + Mode for 3 seconds, then Up to toggle d1/d2).

Heads up: this same button combination also clears the thermostat’s Bluetooth pairing. Dometic’s own manual notes that any phone previously paired with a CT thermostat that’s been reset will need to be paired again; the app will flag it as no longer connected the next time you try.

Dometic CCC2 multi-zone thermostat (up to 4 zones)

Most common cause of needing this one: a dip-switch or configuration change on the control board didn’t take effect until the thermostat itself was reset. The CCC2 is the button-based multi-zone thermostat (Zone 1 through Zone 4, MODE, ZONE, FAN, PROGRAM buttons around a round LCD), different hardware from either single-zone model above.

1. Make sure the CCC2 thermostat is in OFF mode.
2. Simultaneously press and hold the MODE and ZONE buttons.
3. The LCD will display “IniT” and all available zones.
4. Release the MODE and ZONE buttons.
5. Press the ON/OFF button to exit system setup.

This one does wipe your settings. Dometic’s manual states plainly: “Any time a system reset occurs, the factory default settings are restored.” After this reset, every zone returns to 68°F heat, 72°F cool, Auto fan, and the two built-in programs reset to their factory times (Program 1 at 8:00 AM, Program 2 at 10:00 PM). Don’t run this reset just to fix a minor glitch in one zone; it resets all of them.

Dometic analog thermostat: there is no reset

If your thermostat has physical slide switches (System: Cool/Off/Furnace; Fan: Hi/Lo; Auto/On) and no screen, stop looking for a button sequence: there isn’t one. This is a mechanical thermostat wired to an analog control relay (Dometic part numbers 3107541.XXX or 3107546.XXX); it has no microprocessor and nothing to reset in software. Dometic’s own operating instructions for this control kit don’t describe a reset procedure because none exists.

What actually fixes an unresponsive analog thermostat:

1. Wait 2 minutes before flipping it back on. Dometic’s manual is explicit: after switching the AC off with the System switch or moving the temperature lever, wait at least 2 minutes before restarting. This lets refrigerant pressure equalize. Skipping this wait is a common way to trip the breaker or blow a fuse, which then looks like a dead thermostat.
2. Check the AC unit’s 115V AC breaker or fuse at your RV’s main panel (this is the compressor’s power supply, not the thermostat itself).
3. Check the 12V DC fuse panel, usually near the converter, for the fuse feeding the thermostat/control circuit. A blown 12V fuse will make the thermostat go completely dead: no lights, no response to any switch.
4. If the switches themselves feel loose or don’t engage a mode change you can hear (the AC compressor or furnace igniter kicking on), the relay or the thermostat itself has likely failed mechanically. That’s a part swap, not a reset.

If your thermostat still won’t respond

Most common cause across every model: a power problem, not a bad reset attempt. Before assuming the thermostat itself is broken:

• Confirm the RV’s house battery has charge and the converter is supplying power. Dometic’s own manuals note all models (analog and digital) run on the RV’s 12V DC system, and a low battery or bad converter will cause blank or erratic displays that no button sequence fixes.
• Check the specific fuse for your AC/furnace control circuit at the 12V DC panel, not just the main battery disconnect.
• On any digital model (LCD, CT, CCC2), confirm you’re pressing the buttons while the thermostat is Off. All three reset procedures above require the Off state first, and pressing the combo from a running mode does nothing.
• If a digital thermostat is still blank or unresponsive after confirmed good 12V power, that points to an internal fault on the thermostat or control board. This is a job for a qualified RV service technician, not another reset attempt: repeated forced resets on a hardware fault won’t fix it.

FAQ

Does resetting a Dometic thermostat delete my programmed schedule? Depends on the model. The CCC2 multi-zone thermostat explicitly restores factory defaults (68°F heat, 72°F cool, Auto fan) on every zone. Dometic’s manuals for the single-zone LCD and CT thermostats don’t make that same claim; their reset is described as re-syncing the thermostat to the control board, not wiping your saved temperature.

My thermostat only has slide switches. How do I reset it? You don’t. There’s no reset button or sequence on the analog model. If it’s unresponsive, check the AC unit’s 115V breaker/fuse and the 12V DC fuse feeding the thermostat, and wait the full 2 minutes before restarting after switching modes.

What’s the difference between the LCD thermostat and the CT thermostat? The LCD thermostat is the older physical-button model (a “+” button, a “-” button, and a Mode button). The CT (Capacitive Touch) thermostat is the current replacement: a flat touch panel with Bluetooth and an app. Dometic sells the CT as the direct successor to the same single-zone LCD product line.

Will resetting my CT thermostat disconnect it from the app? Yes. The same button combination that performs the system initialization also clears all paired Bluetooth devices. You’ll need to re-pair your phone through the Dometic Climate Control App afterward.

What should the display show if the reset worked? On the single-zone LCD and CT thermostats, two dashes (“- -“). On the CCC2 multi-zone thermostat, “IniT” followed by the available zone numbers. If you don’t see that, the buttons weren’t held long enough or simultaneously enough; try again holding both for the full 3 seconds.

Last reviewed: August 2026. Confirm your exact model against the number printed on the back of your thermostat. Dometic has sold several visually similar single-zone thermostats across different RV model years, and button layouts vary by product line even when they look alike.