3316250.712 RV Single Zone Wall Thermostat Replacement for

QHHR 3316250.712 is a compact single-zone wall thermostat designed to replace Dometic RV air conditioner controls, offering a bright blue backlit LCD and touch capacitive controls for reliable temperature management in campers and trailers.

Whether you're upgrading a worn-out control or fitting a replacement after a repair, this QHHR thermostat matches the common Dometic models used in recreational vehicles. It supports the key Dometic part numbers and uses a three‑wire connection typical for many roof‑mount units, letting you restore programmable temperature control without rewiring the entire system.

Will this thermostat work with my Dometic RV air conditioner?

This replacement is compatible with a broad list of Dometic part numbers, making it a convenient swap for many owners. Check your existing control's part number and wiring before purchasing to confirm fit.

• Compatible with Dometic numbers: 457915, 459516, 459530, 540315, 540316, 640310, 640310C, 640312, 640315, 640315C, 640316, 640316C.
• Also matches alternative markings like B57915, B59516, B59530, B79516, H540315, H540316.
• Uses a 3‑wire interface — verify your RV’s wiring harness matches before installation.

How easy is installation and daily use?

The thermostat replaces the original wall control and connects via the same three wires most Dometic roofs use, so installation is straightforward for anyone comfortable with basic wiring. Day‑to‑day operation is simplified by capacitive touch controls and a high‑contrast backlit LCD for viewing in low light.

• Plug-and-play three‑wire interface for most Dometic systems.
• Capacitive touch surface removes physical buttons that wear out.
• Blue backlight LCD keeps readings visible at night or in dim interiors.

What features affect comfort and durability?

Built with modern sensing and display components, the unit prioritizes reliable temperature reading and a user-friendly interface. The lack of mechanical buttons reduces failure points, and the compact housing fits typical RV wall openings.

• Capacitive sensors for responsive, low‑maintenance input.
• Clear LCD for temperature and mode readouts, visible in low light.
• Durable faceplate and design made to suit camper interiors.

What support and warranty does QHHR provide?

QHHR backs this replacement thermostat with a one‑year warranty and direct customer support to address installation questions or product faults. If you run into compatibility or operation issues, contact the seller for troubleshooting or replacement options within the warranty period.

• One‑year limited warranty included.
• Customer support available for installation and compatibility queries.
• Clear return or replacement path if the unit fails under warranty conditions.

Who is this for: RV owners, DIY repairers, and service shops that need a drop‑in replacement for Dometic single‑zone roof air conditioners. It's ideal for those looking to replace a broken wall control with an easy‑to‑install unit that offers a modern touch interface, readable blue backlight, and broad compatibility with common Dometic models. Confirm your current thermostat’s part number and wiring layout to ensure a seamless swap.