When your Atwood RV water heater stops igniting or switches erratically between LP gas and electric modes, the ignition control circuit board is the most common failure point. This NBK Parts 20276K kit is a plug-and-play direct replacement engineered specifically for Atwood gas/electric combo water heaters -- no rewiring, no fabrication, no guesswork. Get hot water back on your rig the same day it arrives.
Atwood (now Dometic) water heaters built with combined LP gas ignition and electric element heating rely on a single control board to manage both functions. When that board fails -- common symptoms include no ignition spark, the electric element not energizing, or the unit locking out after repeated failed start attempts -- replacing the board is the correct fix. The NBK 20276K is built to the same electrical specification as the original Atwood board it replaces.
NBK Parts is a well-regarded aftermarket supplier in the RV service industry, producing replacement electronics for water heaters, furnaces, and other RV appliances. The 20276K is designed to match the original connector layout, mounting footprint, and 12V DC operating parameters of the targeted Atwood units.
Manages the LP gas ignition sequence -- spark generation, gas valve actuation, and flame sensing -- for reliable light-off in cold or high-altitude conditions.
Controls both the LP ignition circuit and the 120V AC electric heating element circuit from a single board, matching the original Atwood dual-fuel design.
Connector pinout and mounting hole pattern match the original Atwood board. No harness modification required on compatible models.
Backed by a limited 1-year manufacturer warranty from NBK Parts. Provides peace of mind for full-timers and seasonal campers alike.
This board is confirmed to fit the following Atwood RV water heater models. Verify your model number on the heater's data label before ordering -- it is typically located on the exterior access panel or inside the compartment door.
Before replacing the board, rule out simpler causes. Common symptoms that specifically point to a failed control board on these Atwood units include:
Replacement is a straightforward swap for any RV owner comfortable with basic appliance service. The general process on Atwood combo heaters involves:
Atwood's GC and GCH series water heaters were factory-installed in a wide range of travel trailers, fifth wheels, and Class A and C motorhomes from the 1990s through the early 2010s. These units heat water using LP gas, a 120V AC electric element, or both simultaneously -- giving RVers flexibility for boondocking (gas only) or campground hookup (electric or hybrid). Dometic acquired the Atwood appliance line and continues to support parts availability under both brand names.