QHHR RV wall thermostat and relay box for Dometic 3316230.700 — Backlit LCD display, integrated relay

If your Dometic-compatible RV air conditioner needs a reliable wall-mounted control, this QHHR thermostat/relay unit offers a straightforward swap for parts 3316230.000 and 3316230.700. Designed for trailers, campers and motorhomes, it combines a readable LCD display with an internal relay so you get accurate temp control without extra clutter behind the wall. The unit ships with a one-year warranty for peace of mind.

How will this thermostat fit my RV or camper?

This model is built as a plug-in replacement for the common Dometic-style wall controls, matching the mounting dimensions and electrical connections of the original 3316230 series. Installation typically uses the same screw locations and wire harness, minimizing modification.

• Direct replacement for part numbers 3316230.000 and 3316230.700
• Compatible with many Dometic RV air-conditioner systems
• Mounts into standard RV wall thermostat openings
• Uses existing wiring harness when replacing original unit

What features does the QHHR thermostat/relay box offer?

The unit combines a thermostat interface and an internal relay to control heating and cooling without external relays. The LCD screen is backlit for visibility in dim cabin light and provides clear readout of setpoint and mode.

• Integrated relay reduces need for extra components
• Easy-to-read LCD display with backlight
• Simple button layout for setpoint and mode selection
• Sturdy plastic housing suited to RV interiors

How difficult is installation and what tools are needed?

Most installs are straightforward for DIYers familiar with RV electrical systems: remove the old thermostat, disconnect the wiring harness, plug in the replacement and secure the housing. Basic hand tools and care for 12V/24V systems are all that’s required—no advanced fabrication.

• Required tools: screwdriver and possibly wire-release tool
• Typical install time: 15–45 minutes depending on access
• Follow battery/disconnect safety before touching wiring
• Consult RV wiring diagram if harness differs

What should I expect for reliability and support?

QHHR supplies this thermostat with a one-year warranty covering manufacturing defects. The straightforward electronics and integrated relay simplify troubleshooting compared with systems that use multiple separate components.

• One-year limited warranty included
• Replacement part numbers clearly marked for compatibility
• Durable parts intended for RV vibration and temperature swings
• Technical questions supported by seller or installer resources

Who is this for: RV owners, camper renovators and mobile-home technicians seeking a drop-in replacement thermostat and relay box for Dometic-style air conditioners. It’s a solid option if you want a clear LCD readout, an integrated relay to reduce extra wiring, and a product that matches the mounting and wiring of the original 3316230 series without major modifications.