Dometic 92104 Water Heater Igniter Service Kit

The Dometic 92104 Water Heater Igniter Service Kit is an OEM replacement ignition electrode assembly for select Dometic WH-series RV water heaters. The igniter creates the spark needed to light the propane burner and helps the control system confirm that a stable flame has been established.

When the water heater calls for propane heat, the control board sends high-voltage power to the electrode. The igniter produces a spark at the burner, allowing the propane-and-air mixture to ignite. After ignition, the electrode continues to serve as part of the flame-sensing circuit.

A damaged, corroded, misaligned, or cracked igniter can cause repeated clicking, delayed ignition, burner shutdowns, or ignition lockout. Replacing the assembly can restore reliable propane ignition when the gas supply, burner, wiring, and control board are operating correctly.

Models It Fits

• Dometic WH-6GA
• Dometic WH-6GEA
• Dometic WH-9GEA XT

Current product references specifically identify the 92104 for these Dometic WH-series models. I would not list the WH-10GEA or WH-16GEA XT without a model-specific Dometic parts breakdown confirming that fitment.

Dometic part number: 92104
Part type: Spark igniter and flame-sensing electrode assembly
Application: Dometic WH-series electronic-ignition water heaters
Fuel system: LP propane

Verify the complete water-heater model and compare the existing electrode configuration before ordering.

Signs You May Need This Part

• The water heater clicks but the burner does not ignite
• No spark is visible during the ignition sequence
• The spark is weak, intermittent, or occurring in the wrong location
• The burner lights only after several attempts
• The burner ignites and then shuts off shortly afterward
• The water heater repeatedly enters ignition lockout
• The electrode tips are corroded, burned, bent, or heavily worn
• The ceramic insulators are cracked or damaged
• The ignition wires are loose, burned, or physically damaged
• The igniter is no longer positioned correctly near the burner
• The gas valve opens and propane reaches the burner, but ignition still fails
• The burner flame is not being properly detected

Similar symptoms may also be caused by low propane pressure, air in the gas line, a dirty burner, a blocked gas orifice, low 12-volt power, poor grounding, damaged wiring, or a failed control board. Inspect the burner and confirm that the electrode is correctly positioned before replacing the assembly.

Estimated Installation Time

Approximately 20 to 45 minutes.

Installation time may vary depending on water-heater accessibility, wiring condition, corrosion, and whether the burner assembly must be loosened for proper electrode positioning. After installation, confirm that the igniter produces a strong spark at the burner and that the flame remains lit through the complete heating cycle.