Dometic OEM RV Water Heater Ignition Control Kit | 91363 | Atwood

Restore reliable ignition to your Atwood RV water heater with the Dometic 91363 RV Water Heater Ignition Control Kit. This complete genuine Dometic-branded OEM kit replaces failed or unreliable Atwood water heater ignition components — including the ignition control circuit board AND the matching electrode. The right choice when you want the factory Dometic OEM brand specifically for your Atwood water heater repair.

Genuine Dometic OEM

The 91363 carries the Dometic factory brand — built to original equipment manufacturer specifications, packaged under the Dometic name, with the consistency and quality control that comes with OEM-branded parts. For buyers who specifically want the factory Dometic brand on their ignition components, this is the right kit.

Universal Replacement for Atwood Water Heaters

The 91363 is designed as a universal replacement for Atwood water heaters — meaning it can serve multiple Atwood water heater models that use compatible ignition control architecture. That broad compatibility makes it a versatile repair kit rather than being limited to a single specific model. Verify your existing ignition control setup matches before ordering — particularly if your water heater has been modified or has unusual specifications.

Complete Kit — Board AND Electrode

Unlike repairs that require sourcing the board and electrode separately, the 91363 ships as a complete ignition control kit:

• Ignition Control Circuit Board — the brain that manages the ignition sequence
• Electrode — the component that delivers the spark to ignite propane
• References Atwood parts: 93865 and 93868 cross-references

Both components are critical to reliable ignition, and they tend to wear/fail together since they share the same operating environment. Replacing them as a kit is more cost-effective than sourcing each separately AND eliminates the diagnostic uncertainty of "is it the board or the electrode?" — you replace both at once.

What These Components Do

The ignition control system handles the critical sequence that gets your water heater lit and keeps it running safely:

1. The board receives the call for heat from the thermostat
2. The board triggers the electrode to generate a high-voltage spark
3. The spark ignites propane at the burner
4. The electrode also senses flame presence as a safety check
5. The board verifies ignition and locks out if no flame is detected
6. Throughout the heat cycle, the board monitors flame and gas valve operation

Common Failure Symptoms

Reasons to replace the ignition control kit include:

• Water heater won't ignite at all
• No spark at the electrode when heat is demanded
• Weak or intermittent spark
• Repeated ignition lockout after failed attempts
• Water heater lights but shuts off immediately (failed flame sensing)
• Cracked or damaged electrode ceramic
• Erratic or unreliable ignition behavior
• Unit shows no signs of operation when activated

Replacing both the board and electrode at once — rather than just one component — eliminates the diagnostic guesswork and gives you a known-good ignition system going forward.

⚠️ Professional Installation Recommended

Water heater ignition component installation should be performed by a qualified RV service technician. Improperly installed gas ignition components can result in unsafe operation, gas leaks, or fire hazards. Always verify proper ignition operation and check for gas leaks after installation.

Key Features

• Genuine Dometic OEM ignition control kit
• Complete kit — board AND electrode included
• Universal replacement for Atwood RV water heaters
• Cross-references: Replaces Atwood 93865 and 93868
• Easy to install
• Factory-branded OEM Dometic packaging

What's Included

• (1) Ignition Control Circuit Board
• (1) Electrode

Specifications

• Brand: Dometic
• Part Number: 91363
• Type: RV Water Heater Ignition Control Kit
• Application: Atwood RV water heaters (universal replacement)
• Cross-References: Atwood 93865, Atwood 93868
• Includes: Ignition control circuit board + electrode