Technical Overview
Overview & Function
The Dometic 3316230.700 single-zone CT thermostat is the wall control for compatible Dometic heating and cooling systems. It reads room temperature and issues run commands to one climate zone. A failing thermostat shows up as inaccurate temperatures, blank display, or a system that ignores setpoint changes. The same-number 3316230.700 restores factory control feel and accuracy.
Fitment & Compatibility
This thermostat fits single-zone Dometic systems wired for the CT control family. Confirm 3316230.700 on your old thermostat back plate or system guide. It mounts to the standard wall position and lands on the original low-voltage wires.
Technical Construction & Specifications
The unit uses the CT interface with OEM-spec sensing and display electronics behind a coach-grade faceplate. It communicates with the matched control box over the factory low-voltage bus and draws operating power from the system circuit. Display, buttons, and temperature calibration follow the Dometic CT specification.
Installation & Maintenance Guidelines
Turn off system power at the breaker and control switch. Photograph the old wire landings, noting color-to-terminal mapping. Mount the new 3316230.700, land wires per the diagram, and restore power. Set the correct zone options per the manual and verify heating, cooling, and fan modes respond properly.