QHHR RV Wall Thermostat & Relay Box for Dometic 3316230.000 — Black LCD, Heat/Cool Control, Plug-and-Play Replacement

The QHHR 3316230.000 RV wall thermostat/relay box is a direct-fit replacement for Dometic RV air conditioner control modules, providing simple heat and cool control with an easy-to-read LCD and one-year warranty.

If your RV, camper or travel trailer uses a Dometic-style wall thermostat and the original control is failing, this QHHR assembly (also referenced as 3316230.700 and paired with the black wall thermostat 3316230.714) is built to restore reliable temperature control. It combines the relay box electronics and a clear LCD thermostat interface to operate roof-mounted air conditioners and heat systems in small mobile living spaces. Designed for plug-and-play replacement where wiring and mounting match the original Dometic parts, it helps bring your climate control back to dependable operation.

How will this thermostat/relay box improve my RV’s temperature control?

The unit replaces worn or non‑functional control boards and thermostats, restoring proper on/off cycling, mode selection and temperature readout. Because it integrates the relay and display, it reduces the number of separate replacement parts and troubleshooting steps.

• Direct compatibility with part numbers 3316230.000 and 3316230.700.
• LCD display for clear temperature and mode information, visible in low light.
• Simplifies repairs by combining relay and thermostat functions into one assembly.

Is installation complicated—can I swap it myself?

In many RVs this unit is a straightforward swap if the connector and mounting match the original Dometic part. Basic electrical safety knowledge and removal of power before work are required; if wiring differs, consult a technician or service manual to avoid damage.

• Designed for direct replacement when original connectors align.
• Turn off battery and shore power before starting work.
• Keep original screws and wiring order to simplify reinstallation.

What features does the LCD thermostat display provide?

The backlit LCD shows current temperature and control settings, making it easier to see at night or in dim interiors. The clear readout helps you confirm mode (heat/cool) and setpoint without guessing, so operation is faster and more precise.

• Backlit screen for low-light readability.
• Displays current temperature and selected mode.
• User-friendly interface tailored to common RV HVAC functions.

What warranty and reliability can I expect?

QHHR backs this replacement thermostat/relay box with a one-year warranty, giving short-term protection against manufacturing defects or premature failures. Proper installation and protecting the unit from moisture and vibration will help ensure long-term reliability in a mobile environment.

• One-year limited warranty included.
• Built for RV conditions—compact design to fit wall mounting locations.
• Replaces specific Dometic part numbers to restore original functionality.

Who is this for: RV owners, repair shops and DIY technicians who need a dependable replacement control for Dometic-style air conditioners in campers, motorhomes and travel trailers. If your existing thermostat or relay box is unresponsive, erratic, or displays no readout, the QHHR 3316230.000 assembly with the black wall thermostat 3316230.714 offers a practical, covered solution to get your climate control working again quickly.