Choosing the right ignition board depends on whether your RV uses a Suburban or an Atwood water heater, as these systems aren’t interchangeable. The main differences lie in their connector types, wiring configurations, and whether the board offers advanced diagnostic features like LEDs or surge protection for your electrical system.
Best overall: 520814 Ignition Control Board offers a reliable, plug-and-play solution for Suburban owners needing a direct OEM-style replacement with a waterproof enclosure for long-term durability in various weather conditions.
Best for Atwood systems: 2026 Upgraded 91365 Board provides a straightforward, direct replacement for multiple Atwood and Dometic models, meeting OEM standards to restore consistent heating performance without requiring extra tools or complex wiring.
Best for advanced diagnostics: UIB64 Universal Ignitor Board stands out for its integrated surge protection and three diagnostic LEDs, which simplify troubleshooting by clearly showing the board’s status during service.
The rest of this guide is for RV owners looking to identify the specific control board version required for their unique water heater model and series.
How We Picked
To earn a place in this article, a product had to clearly list its compatibility with specific OEM part numbers and water heater series, such as Suburban SW or Atwood G6A models.
All 10 products side by side — scroll sideways to see every column.
| Top Pick | Best for Atwood E | Also Great | Best for Diagnostics | Best for 91367 Models | Best for Older Models | Best for Heavy Duty | Best for Moisture | Best for DIY | ||
| Preview |  |  |  |  |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|---|---|---|
| Product | 520814 Ignition Control Board | 2026 Upgraded 91365 Board | FAN50PLUS Universal Igniter Board | Dinosaur Electronics UIB64 Board | 91367 Ignition Control Board | UIB64 Universal Ignitor Board | Atwood G6A-6E Control Board | Atwood 91367 Control Board | Suburban 520814 Module Board | UIB64 Universal Ignition Board |
| Brand | Lrichy | YEHERIT | Dinosaur Electronics | Generic | Aoryimt | Camoo | AIWGIW | Atwood | Yoursme | sixcow |
| Best for | Top Pick | Best for Atwood E | Also Great | Best for Diagnostics | Best for 91367 Models | — | Best for Older Models | Best for Heavy Duty | Best for Moisture | Best for DIY |
| The listing says | 12VDC control for Suburban SW series Fits many SW series models | Fits Atwood and Dometic E series models Replaces 91365, 91346, 91226, 93305, 93851 | Size 3.35" x 4.25" | Fits Atwood AC/Gas water heaters 12V DC operation for RV systems | Replaces Atwood 91367, 93253, 93257, 93307, 91420, 91504, 93865, 91349 Compatible with G6A, GH6, G10, GCH6, GC6A series | Fits Atwood 4+6 edge or 10-pin connectors Fixes control board failure | Fits GCH, GH, G6A, GC6A, G10 series Fits G610, GC10, GH10, GH610 series | Designed for precise model compatibility Heavy-duty OEM replacement part | 12V DC for Suburban SW series Fits various Suburban SW models | Fits Atwood 4+6 or 10-pin connectors 12V DC, fuse and surge protected |
| More information | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon | Price on Amazon |
1. 520814 Ignition Control Board
Best for: Owners of Suburban SW series water heaters.
This control unit is designed specifically for Suburban SW series RV furnaces and water heaters. It monitors the combustion process to improve hot water production and supply. The board features a waterproof enclosure with insulation and water resistance.
Installation is designed to be quick and easy thanks to a plug-and-play setup. It includes overheat protection to help maintain safety during operation. This board is an OEM replacement option for part numbers like 520814, 520871, and 33550L.
Check your current model number before purchasing. This board fits the SW4D, SW6D, SW10D, SW12D, and SW16D series, including those with E, L, or M suffixes. It isn’t suitable for Atwood or Dometic water heater systems. Using this board on an incompatible unit will cause ignition failure.
Pros
- Designed for Suburban SW series.
- Waterproof enclosure for durability.
- Simple plug-and-play installation.
- Includes a two-year warranty.
Cons
- Only for Suburban models.
- Incompatible with non-Suburban brands.
2. 2026 Upgraded 91365 Board
Best for: Standard Atwood and Dometic water heater repairs.
This circuit board is built to meet or exceed OEM specifications for Atwood and Dometic water heaters, serving as a direct replacement for part numbers such as 91365, 91346, 91226, 93305, and 93851.
You can install this board without any additional tools, as it’s a direct replacement for older or damaged units. It’s compatible with a wide range of models, including the G6A, GCH, GH, and G16 series.
If your heater model ends in “E,” this board is likely the correct fit. However, if your unit isn’t listed in the G6A-2E through GEH16-EXT range, don’t force the connection. Mismatched boards often cause ignition failure or permanent damage to the heating element. Always verify your specific water heater model number against the manufacturer list before ordering.
Pros
- Meets or exceeds OEM standards.
- Compatible with many Atwood models.
- No special tools for installation.
Cons
- Check model compatibility carefully.
3. FAN50PLUS Universal Igniter Board with Fan Control
The FAN50PLUS is a microcontrolled igniter board designed for specific application needs. It features a compact physical size, measuring 3.35 inches by 4.25 inches.
The listing doesn’t mention fan control integration. If your heater requires a simple board without fan management, this unit will be incompatible and may cause system errors. Always verify your heater’s wiring diagram against the board’s specifications before installation.
Many users mistakenly assume universal boards work with every heater model. Installing this board in a system that lacks integrated fan control often results in a failure to ignite or permanent damage to the control circuitry.
Because it’s a specialized unit, it’s best suited for those who have confirmed this microcontrolled board matches their existing heater’s requirements. If you’re unsure about your system’s compatibility, consult your heater’s technical manual to confirm the ignition sequence requirements.
4. Dinosaur Electronics UIB64 Universal Ignitor Board
Best for: RVers wanting surge protection and diagnostics.
The UIB64 is a universal ignition control board built for Atwood AC/Gas water heaters. It’s designed to work with both 4+6 edge-style connectors and single 10-pin configurations. The board includes integrated fuse and surge protection to help shield your system from electrical issues.
Three diagnostic LEDs are built into the board to simplify the troubleshooting process during repairs. It can be configured for older furnaces and refrigerators that use standard ignitor board styles.
If your system uses a 12V DC power source, this board provides the necessary ignition control for motorhomes, campers, travel trailers, and fifth wheels. Always verify your specific model, connector type, and original board layout before ordering. If your current board doesn’t match these standard configurations, this unit won’t function correctly. Failing to confirm these details before purchase often leads to installation errors and wasted time.
Pros
- Includes fuse and surge protection.
- Three built-in diagnostic LEDs.
- Versatile connector compatibility.
Cons
- Requires verification of connectors.
5. 91367 Ignition Control Board
This ignition control board serves as a direct replacement for Atwood part numbers 91367, 93253, 93257, 93307, 91420, 91504, 93865, and 91349. It’s engineered exclusively for gas-fired circuit systems requiring 12V DC power.
Before purchasing, verify your specific water heater model. This unit fits the G6A-XE, GH6-XE, G10-XE, GCH6-XE, and GC6A-XE series. However, it won’t function with GCH6A-10E, GC6AA-10E, GC10A-4E, or GCH10A-4E units. Installing this board on an incompatible model will result in a failure to ignite.
The 91367 board is designed to respond to overvoltage and overheating. High-quality construction helps prevent common field failures like short circuits or poor ignition contact. If you encounter performance issues, the manufacturer provides a 12-month after-sales service period to address defects.
Pros
- Integrated safety protection for overvoltage and overheating.
- Direct replacement for eight common Atwood part numbers.
- Durable construction prevents short circuits.
Cons
- Incompatible with select GCH and GC series models.
- Limited to gas-only circuit applications.
6. UIB64 Universal Ignitor Board Ignition Control Board
Best for: Those needing a highly configurable universal board.
The UIB64 is a 12V DC replacement board for Atwood AC/Gas water heaters. It’s jumper-configurable, allowing it to function in various applications by removing or resetting jumpers on the board. This makes it suitable for both modern 10-pin configurations and older 6-position edge-style connectors.
If you’re replacing a standard ignitor board in older furnaces, water heaters, or refrigerators, reset the jumpers to mimic a UIB S board; failure to correctly configure these jumpers before installation is the most common mistake and will prevent the unit from firing.
The board comes with a clear cover that protects the electronics while allowing you to see the three diagnostic LEDs. The kit includes the board, mounting screws, a mounting plate, and the cover. It’s meant to be a plug-and-play solution, but you must ensure your wiring matches the required configuration. If you aren’t satisfied, the product includes a 30-day full-refund policy and a 12-month warranty.
Pros
- Highly configurable with jumpers.
- Clear cover for LED visibility.
- Includes necessary mounting hardware.
Cons
- Requires jumper configuration knowledge.
7. RV Water Heater Control Board Compatible with Atwood G6A-6E G6A-7E
Best for: Older Atwood water heater series.
This ignition circuit board is compatible with a wide range of older Atwood models, including the G6A-6E, G6A-7E, and various GCH and GH series heaters. It replaces multiple part numbers, such as 93257, 93307, 93865, 93253, 91420, 91504, and 91349. All units are tested before leaving the factory to ensure they meet OEM standards.
The board is designed for 12V DC systems. Because it covers a massive range of part numbers, it’s the standard choice for restoring vintage RV water heating systems. If your heater carries a model number like GCH6-4E, G6A-2E, or G10-3E, this board likely serves as your direct replacement.
Always verify your specific model number against the full compatibility list before installation. If you encounter issues during setup, the manufacturer offers direct communication to troubleshoot the board. Don’t assume universal fitment for every Atwood unit; check your existing part number against the list of nine compatible replacements provided.
Pros
- Broad compatibility with older models.
- Thoroughly tested before shipping.
- Replaces many older part numbers.
Cons
- Verify fit for specific year.
8. Atwood 91367 OEM RV Water Heater Ignition Control Circuit Board
Best for: Users seeking a genuine OEM part.
The Atwood 91367 is a heavy-duty, genuine OEM ignition control board kit. It’s designed specifically for gas-only water heater operation. The board is built with precision fitting to ensure a secure attachment within your RV’s water heater compartment.
Verify your current system before installation. If your heater utilizes an electric heating element, this board is incompatible and won’t function. This unit is strictly for gas-only systems.
This unit is constructed from hard-wearing materials intended to provide longevity. As an OEM product, it’s designed to deliver the exact performance specifications required by the original manufacturer.
When ordering, check the origin of your unit. International versions of this product may feature different labeling, age ratings, or fitment requirements compared to local domestic models. Confirm your specific model number matches the manufacturer’s requirements to ensure a secure, precise fit.
Pros
- Genuine OEM replacement part.
- Heavy-duty, durable construction.
- Precise fit for secure mounting.
Cons
- Only for gas-only systems.
9. Suburban 520814 Module Board
Best for: Consistent heating in Suburban systems.
Suburban SW series RV furnaces and water heaters rely on this module board to monitor and control the combustion process.
The board is coated to provide moisture resistance and insulation, which helps prevent electrical issues caused by the humid environment of an RV water heater. It uses a plug-and-play design, making it simple for most owners to install.
Verify your model number before purchasing. This unit replaces part numbers 520814, 520871, 520820, AP4896608, and 33550L. If your heater isn’t in the SW series, such as an Atwood or Dometic system, this board won’t function. Choosing the wrong board often leads to ignition failure or total system lockout.
Pros
- Excellent moisture resistance coating.
- Includes overheat and leakage protection.
- Simple plug-and-play installation.
- Backed by a 12-month warranty.
Cons
- Strictly for Suburban series.
10. UIB64 Universal Ignition Control Circuit Board Replacement
Best for: DIY installation with clear instructions.
Designed as a universal ignition board for Atwood AC/Gas water heaters, the UIB64 uses local flame sense to detect the flame through the spark electrode assembly.
The kit includes a user manual and all necessary hardware for installation. It’s designed to work with existing wiring, making it a straightforward replacement for many Atwood boards. Before purchasing, verify your unit’s connector style, as this board is specifically designed for 4+6 header pins or 10-pin configurations.
If you have an older furnace or refrigerator, reset the internal jumpers to configure the board for the legacy edge-style connector. This allows the UIB64 to function as a UIB S ignitor board. Always turn off both the power and gas supply before accessing the lower compartment to swap the board.
Pros
- Local flame sense technology.
- Includes fuse and surge protection.
- Comprehensive installation hardware included.
Cons
- Verify connector style first.
- Requires manual jumper adjustment for older, single-connector units.
How to Choose in Sixty Seconds
Which ignition board do I actually need?
You must first identify the brand of your water heater, as Suburban and Atwood (Dometic) boards aren’t interchangeable. Check the label on your water heater unit to confirm the manufacturer and model number. Once you know the brand, look at your existing board’s connector type. Some older units use edge-style connectors, while newer models often use a single multi-pin block connector. If you’re upgrading to a universal board, ensure it supports your specific connector type via jumpers. Always match your part number against the replacement board’s compatibility list to avoid electrical mismatches that could damage your gas valve or heater.
Should I choose a standard board or a universal board?
A standard OEM-style board is usually the simplest choice if you want to replace a failed unit with the exact same technology. However, universal boards like the UIB64 series offer advantages like built-in surge protection and diagnostic LEDs. These LEDs are helpful because they can tell you if the board is sensing a flame or if there’s a fault in the gas valve, which saves time during troubleshooting. If you have an older RV, a universal board might be your only option if the original OEM board is no longer produced. Choose a universal board if you value easier diagnostics and better protection against power surges.
What should I confirm before ordering?
Confirm the voltage and the heating method. Most RV water heater boards operate on 12V DC, but some systems have specific requirements for gas-only versus gas-electric heating. If your water heater uses an electric element, ensure the board you purchase supports that feature. Always check the “Not Compatible” list in the product description; even if a board looks identical, a small difference in internal circuitry can prevent it from working with your specific model. Finally, verify the dimensions and mounting hole placement if you’re tight on space, as some universal boards have different footprints than the original units.
Related guides
- How to Drain Rv Water Heater: Easy Steps for Quick Maintenance
- How to Flush Rv Water Heater: Easy Steps for Peak Performance
Frequently Asked Questions
What does the ignition board actually do in an RV water heater?
The ignition control board manages the water heater’s ignition sequence and flame monitoring. It signals the gas valve and spark electrode, then uses sensors to confirm the flame. Boards like the UIB64 simplify wiring by using local flame sensing through the spark electrode instead of a separate remote wire.
What maintenance does an ignition board require after installation?
Ignition boards are generally maintenance-free, but they’re sensitive to moisture and electrical surges. To keep your board working, ensure the compartment where it’s installed remains dry and free of debris. Products like the 520814 Ignition Control Board feature waterproof coatings to help them survive the humid conditions inside an RV water heater compartment. Regularly inspect the wiring for any signs of heat damage or loose pins to prevent intermittent performance issues.
What is the most common reason these boards fail?
Electrical surges from short circuits in the gas valve or AC relay are the most frequent causes of board failure. These spikes damage internal electronics, which is why boards like the Dinosaur Electronics UIB64 include integrated fuse and surge protection. Water intrusion and physical vibration can also damage connections.
Is the simplest board on the list always enough?
A basic OEM-style board like the Atwood 91367 is sufficient if you prefer a simple, reliable replacement for standard gas-only models. If you need easier troubleshooting, the UIB64 Universal Ignitor Board provides diagnostic LEDs. Choose based on whether you prefer a plug-and-play experience or modern diagnostic features.
Closing
Selecting the right ignition board starts with identifying your water heater brand and connector type. For Suburban owners, the 520814 Ignition Control Board is a reliable choice for its waterproof construction and plug-and-play installation. If you use an Atwood system, the 2026 Upgraded 91365 Board is an excellent direct replacement that meets OEM standards.
For those seeking added confidence, the UIB64 Universal Ignitor Board offers three diagnostic LEDs and integrated fuse protection.
Always verify your model number against the manufacturer’s list before purchasing. A common mistake is assuming compatibility based on appearance alone; check your current wiring configuration to ensure a perfect match. If you’re replacing an Atwood 91367 board, note that it’s gas-only and not compatible with certain GCH6A or GC10A models. Confirming these details in your manual ensures your hot water system is restored without compatibility issues.
