Suburban RV Water Heater Switches and Controls

What does the switch on a Suburban RV water heater do?

The on/off switch controls power to the water heater's gas valve, DSI control board, or electric element, depending on your model. When you flip it on, the DSI board initiates ignition (gas models) or energizes the element (electric models). A failed switch is one of the most common reasons a Suburban water heater won't fire, so it's worth testing before replacing larger components like the board or gas valve.

How do I know which Suburban water heater switch fits my model?

Confirm your water heater model number (typically stamped on the data plate inside the access door, e.g., SW6DE, SW10DEL) before ordering. Suburban switches vary by tank size, ignition type (DSI vs. pilot), and whether the unit is gas-only or gas/electric. If you need help matching a switch to your unit, text or call our team at 817-984-1852. Pair the switch replacement with a service check of your 10 gallon RV water heater components while you have the access panel off.

Can I replace a Suburban water heater switch myself?

Yes. Most Suburban switch replacements are a straightforward 15-20 minute job: disconnect 12V power, remove the interior wall plate or access cover, unplug the existing switch harness, and connect the new switch. No soldering or specialized tools required. Always disconnect shore power and turn off the LP gas before working on the unit.

What other Suburban controls do you carry besides switches?

This collection covers the most common Suburban control failure points: on/off rocker switches, DSI control boards, thermostats, ECO (energy cut-off) switches, and replacement wiring harnesses. For winter storage prep on your water heater and plumbing system, see our RV winterizing kits.