QHHR RV Wall Thermostat with Integrated Relay Box for Dometic AC — 3316230.000 Direct Replacement, LCD Heat/Cool Control

If you need a reliable control interface for your RV, camper, or travel trailer air conditioning, this QHHR replacement combines a clear LCD thermostat with an integrated relay box to manage heat/cool cycles. It swaps in for part numbers 3316230.000 and 3316230.700, restoring responsive temperature control and avoiding the expense of a full HVAC overhaul. The unit is built for mobile environments and includes a one-year warranty for added peace of mind.

How does this thermostat replace my existing Dometic controller?

The QHHR 3316230.000 is engineered to match the electrical connections and mounting pattern used by many Dometic roof AC systems, so installation is straightforward for technicians or confident DIYers. It provides the same relay control functions that activate compressor and fan circuits.

• Direct fit for part numbers 3316230.000 and 3316230.700
• Compatible wiring terminals for common Dometic systems
• Plug-and-play mounting pattern reduces modification time
• Integrated relay box replaces separate components

What features make the display and controls easy to use in an RV?

The thermostat has a bright LCD that stays legible in low light, letting you check and adjust settings without fumbling. Controls are straightforward and responsive to help you set target temperatures and change modes quickly while on the road.

• Large, easy-to-read LCD screen
• Simple temperature and mode buttons for quick adjustments
• Visible feedback for fan/compressor status
• Layout designed for small-panel wall mounting in RV interiors

Will this improve temperature control and efficiency in my camper?

By replacing a worn or malfunctioning thermostat and relay assembly, the QHHR unit restores precise cycling of the compressor and fan, which helps maintain a consistent cabin temperature. Proper relay operation also prevents excessive cycling that can reduce efficiency and component life.

• Accurate setpoint control helps maintain steady temperatures
• Relay management prevents short-cycling of the compressor
• Smoother fan control improves comfort without extra energy use
• One-year warranty supports reliability expectations

What should I know before installing this replacement part?

Confirm the part numbers and electrical compatibility before ordering to ensure a hassle-free swap. If you’re not experienced with RV electrical systems, have a qualified technician perform the installation to maintain safety and proper operation.

• Verify matching part number: 3316230.000 or 3316230.700
• Turn off power to the AC unit before servicing
• Follow wiring diagram and mounting orientation exactly
• Professional installation recommended for non-technical users

Who is this for? Owners of RVs, travel trailers, and campers who have Dometic-style roof air conditioners and need a direct, dependable replacement for a failed or outdated wall thermostat and relay box. It’s especially useful for RV owners wanting an easy-to-read control interface, reliable relay switching, and a replacement that fits existing cutouts and wiring. Technicians and experienced DIYers will appreciate the matched connections and the one-year warranty backing the product.