Lrichy RV Thermostat 3-Wire 12VDC for Dometic CT Replacement — Capacitive Touch, Blue Backlit Display

The Lrichy 3316250.712 is an upgraded 3-wire, 12VDC RV thermostat designed to replace compatible Dometic CT units and deliver touch-controlled single-zone temperature and fan management for RV heating and cooling.

This compact thermostat provides a modern capacitive-touch interface, a blue-backlit display, and straightforward controls for furnace and air conditioning systems in RVs that use a 3-wire, 12V DC wiring standard. It supports both Fahrenheit and Celsius, three fan speeds, and separate temperature ranges for heat and air conditioning. Before purchasing, verify your RV uses a 3-wire thermostat harness and 12V DC power—this unit does not support 2-wire or 6-wire systems.

How do I know this thermostat matches my RV wiring?

Confirm compatibility by removing your existing thermostat and counting the wires in the connector: this Lrichy model requires three wires and a 12V DC supply. If you have fewer or more wires, this unit will not function correctly.

• Works only with 3-wire RV thermostat harnesses.
• Requires 12V DC control voltage—common in RV systems.
• Not compatible with 2-wire or 6-wire thermostats—check before ordering.
• Designed as a direct fit replacement for Dometic 3316250.712 compatible units.

What controls and temperature ranges does it offer?

The thermostat provides simple, tactile controls for switching modes and adjusting temperature using capacitive touch buttons. It supports distinct ranges for heating and cooling and lets you toggle between Fahrenheit and Celsius by holding the increase and decrease buttons together.

• Furnace (heat) set range: 40°F–90°F.
• Air conditioning set range: 55°F–90°F.
• Three fan speed settings and single-zone control for one living area.
• Tap buttons to raise/lower temperature; hold both to switch °F/°C.

How easy is installation and daily operation?

Installation is intended to be straightforward if you already have a compatible 3-wire connector—swap the old unit for this one and secure the wiring. Daily use is intuitive thanks to the responsive touch surface and a clear backlit display, making mode changes and temperature adjustments quick even in low light.

• Simple swap-in design for matching 3-wire connectors.
• Capacitive touch buttons for smooth, responsive input.
• Blue backlight for visibility at night or in shaded areas.
• Controls both furnace and AC without complex programming.

What warranty and support does Lrichy provide?

Lrichy backs this thermostat with a two-year warranty and a customer-friendly replacement/refund policy for defects. For assistance during installation or with features, contact the seller’s support channel to expedite troubleshooting or a warranty claim.

• Two-year warranty for product defects and malfunctions.
• Free replacement or refund options for qualifying issues.
• Dedicated customer support via the vendor’s listed contact method.

Who is this for: The Lrichy 3316250.712 is aimed at RV owners and technicians who need a reliable, modern replacement for compatible Dometic CT-style thermostats in 12V DC, 3-wire systems. It suits people who prefer touch controls and a clear display over older mechanical or simple digital thermostats, and who want basic single-zone control of furnace and air conditioning without multi-zone complexity.

• Key features: capacitive touch control, blue backlight, single-zone heat/cool, 3 fan speeds, °F/°C toggle.
• Important reminder: verify a 3-wire, 12V DC wiring harness before purchase.