Choosing a new water heater igniter board means matching the exact connection type and model series of your RV’s current unit. While many boards look identical, they handle different ignition sequences and wiring configurations. The primary difference between our top picks lies in their compatibility with specific brands and the level of diagnostic feedback they provide during repairs.
Best overall: Suburban 520814 Control Board is the top choice for Suburban owners, offering a straightforward, plug-and-play replacement that meets original equipment specifications for reliable hot water production.
Best for Atwood units: Atwood 91365 Control Board is the go-to solution for Atwood and Dometic owners, providing a direct-fit design that replaces multiple older part numbers without needing extra tools.
Best for advanced diagnostics: Dinosaur Electronics UIB64 Board stands out for its built-in diagnostic LEDs, which help users quickly identify status issues during service and repair work.
This guide is for RV owners looking to restore their water heater’s ignition function by selecting the correct, compatible control board for their specific heating system.
How We Picked
We compared 115 different Amazon listings to find boards that clearly state their compatibility, electrical requirements, and safety features. A product earned a spot only if the listing provided specific model numbers, connector types, and clear details on its intended RV system. We excluded items that lacked clear part number references or specific brand compatibility to ensure you can find a match for your unit. Our selection focuses on identifying the right hardware based on what the manufacturer states is required for safe, reliable operation in a mobile environment.
All 10 products side by side — scroll sideways to see every column.
| Top Pick | Best for Dometic Units | Also Great | Best for Diagnostics | Best for Older Models | Best for G6A Series | |||||
| Preview |  |  |  |  |  |  |  |  |  |  |
|---|---|---|---|---|---|---|---|---|---|---|
| Product | Suburban 520814 Control Board | Atwood 91365 Control Board | FAN50PLUS Universal Igniter Board | Dinosaur Electronics UIB64 Board | Atwood 91367 Control Board | Atwood G6A-6E Control Board | UIB64 Universal Ignitor Board | Suburban 520814 Module Board | UIB64 Universal Ignition Board | RV Water Heater Control Board |
| Brand | Lrichy | YEHERIT | Dinosaur Electronics | Generic | Aoryimt | AIWGIW | Camoo | Yoursme | Dinosaur Electronics | ZJTBLL |
| Best for | Top Pick | Best for Dometic Units | Also Great | Best for Diagnostics | Best for Older Models | Best for G6A Series | — | — | — | — |
| The listing says | 12VDC control for Suburban SW series Fits SW4D through SW16DEM models | Fits Atwood and Dometic E-series models Replaces 91365, 91346, 91226, 93305, 93851 | Size 3.35" x 4.25" | UIB64 board for Atwood AC/Gas heaters 12V DC operation | Replaces Atwood 91367, 93253, 93257, 93307, 91420, 91504, 93865, 91349 Fits G6A-XE, GH6-XE, G10-XE, GCH6-XE, GC6A-XE series | Fits GCH6, GC6A, GH6, G6A series models Fits GCG6A, GC6AA, GCH10A, GC10A, G10, G610, GH10 series | Fits Atwood AC/Gas heaters with edge connectors Clear cover for LED visibility | 12V DC control for Suburban SW series Fits SW4D through SW16DEM models | Dinosaur Electronics UIB 64 ignitor board TEI certified | Replaces 91365, 91346, 91226, 93305, 93851 Fits Atwood Dometic G6A, GC6A, GCH6, GH6, G10, GC10, GCH10, GH10 series |
| 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. Suburban 520814 Control Board
Best for: Suburban SW series water heater owners.
The Suburban 520814 Control Board manages the combustion process for Suburban SW series furnaces. By monitoring the burner, this unit maintains a steady supply of hot water. Its waterproof enclosure protects the internal electronics from moisture, a common concern in outdoor-mounted RV equipment.
Installation is quick due to its plug-and-play design. Unlike universal ignitor boards that require manual jumper configuration, this unit is built specifically for Suburban models to ensure a seamless swap. Verify your model number before purchase; this board fits units including the SW4D, SW6D, SW6DE, SW10D, and SW16DEM series. If your current part number is 520814, 520871, AP4896608, or 33550L, this board serves as a direct OEM replacement.
It isn’t suitable for Atwood or Dometic heating systems. Always confirm your system operates on 12VDC, as this board won’t function with other voltage requirements.
Pros
- Designed specifically for Suburban SW series.
- Includes a durable, waterproof enclosure.
- Features integrated overheat protection.
Cons
- Compatible only with Suburban models.
- Limited to 12VDC systems.
2. Atwood 91365 Control Board
Best for: Atwood and Dometic water heater owners.
The Atwood 91365 Control Board serves as a direct replacement for several older Atwood and Dometic part numbers, including 91346, 91226, 93305, and 93851. It’s manufactured to meet or exceed original equipment standards, providing a reliable path to restoring ignition function. Because it’s a direct replacement, it mounts easily in place of your damaged board without requiring extra tools.
This unit is designed for 12VDC operation. If your heater model ends in an “E” designation, such as the GC10A-4E or GCH6A-10E, this board is designed for your specific configuration. However, don’t attempt to install this on Suburban heating systems. It’s strictly for Atwood and Dometic units.
While it provides a simple fix for standard setups, it lacks the advanced diagnostic LEDs found on the UIB64 Universal Ignitor Board. If you struggle to identify the source of a persistent ignition failure, consider that this board won’t offer visual error codes to guide your troubleshooting.
Pros
- Direct replacement for common Atwood numbers.
- Meets or exceeds OEM specifications.
- Straightforward installation process.
Cons
- No diagnostic indicator lights.
- Specific to Atwood/Dometic brands.
3. FAN50PLUS Universal Igniter Board with Fan Control
The FAN50PLUS Universal Igniter Board is a microcontrolled unit designed to handle both ignition and fan control functions. Its compact size of 3.35″ x 4.25″ allows it to fit into tight spaces where larger boards might struggle. Because it’s microcontrolled, the board provides precise timing throughout the heating cycle.
This board is intended for users who need a versatile solution that can handle more than just simple spark ignition. If your system relies on a fan for combustion air, this unit provides the necessary integration. However, it isn’t designed for basic, non-fan-assisted water heaters. Attempting to install this on a standard, non-fan unit will result in a mismatch that prevents the system from firing correctly.
Always verify your specific water heater wiring before installation to ensure the board matches your existing connector style. If you’re uncertain about the pin configuration, consult your heater’s schematic first. A mistake here often leads to blown fuses or damaged circuits.
4. Dinosaur Electronics UIB64 Universal Ignitor Board
Best for: Troubleshooting and electrical protection.
The Dinosaur Electronics UIB64 Board is a highly configurable replacement for Atwood AC/Gas water heaters. It features three diagnostic LEDs that show the board’s status, which makes it much easier to identify why a heater might fail to ignite. It also includes fuse and surge protection to help safeguard the electronics against common electrical issues.
This board can be configured for various connector styles, including both the 4+6 edge-style and the 10-pin connector. Unlike the Atwood 91365 Control Board, which is a fixed-design replacement, this board requires you to verify your connector type and configure it accordingly. It isn’t a universal fit for Suburban-brand heaters.
If your system uses a 12V DC power source, this board serves as a direct upgrade for motorhomes, campers, and fifth wheels. However, always verify your original board model and connector configuration before ordering. If you purchase the wrong board for your specific wiring harness, the unit will fail to power the ignition sequence correctly.
Pros
- Three built-in diagnostic LEDs.
- Integrated fuse and surge protection.
- Configurable for different connector styles.
Cons
- Requires manual jumper configuration.
- Not compatible with Suburban units.
5. Atwood 91367 Control Board
Best for: Specific older Atwood models.
The Atwood 91367 Control Board is a specialized replacement for several Atwood GH6 and G10 series models. It’s built to manage 12V DC gas ignition and includes safety features like overvoltage and overheating protection. If your current board is suffering from poor contact or short circuits, this unit acts as a direct substitute.
Check your model number against the G6A-XE, GH6-XE, G10-XE, GCH6-XE, and GC6A-XE series lists before purchasing. If your unit is a GCH6A-10E, GC6AA-10E, GC10A-4E, or GCH10A-4E, this board won’t work. Attempting to install this on an incompatible model can lead to ignition failure.
This board is strictly for gas-only circuit boards. If your water heater requires electric heating element control, this part won’t provide that functionality. Verify that your system requires a 12V DC input, as this board is calibrated exclusively for that voltage.
Pros
- Includes overvoltage and overheat protection.
- Replaces several older Atwood part numbers.
- Specifically designed for gas-only circuit boards.
Cons
- Incompatible with many newer Atwood models.
- Gas-only circuit board functionality.
6. RV Water Heater Control Board Compatible with Atwood G6A-6E G6A-7E
Best for: Older Atwood G6A and GCH6 series.
The Atwood G6A-6E Control Board is designed to replace a wide range of older Atwood part numbers, such as 93257, 93307, 93865, 93253, 91420, 91504, and 91349. It’s manufactured to OEM standards and is suited for owners of older G6A, GH6, and GCH6 series heaters. It handles the standard ignition requirements for these older gas/electric units.
This board is a good match if you’re trying to keep an older unit running. Because it covers so many different legacy part numbers, you must confirm your current board’s part number matches the list provided. If you see a 10-pin connector, this board isn’t for you. It isn’t suitable for newer models that require the configurations found on the UIB64 Universal Ignitor Board.
Check your specific model number against the GCH6-4E, GCH6-6E, G6A-2E, or G6A-3E series to ensure compatibility. If your heater falls outside these legacy series, this part won’t function.
Pros
- Compatible with many legacy Atwood models.
- Built to OEM standards.
- Simple operation using standard battery power.
Cons
- Limited to older unit series.
- No advanced diagnostic features.
7. UIB64 Universal Ignitor Board Ignition Control Board
Best for: Replacing Atwood units with edge connectors.
The UIB64 Universal Ignitor Board is a versatile replacement for Atwood AC/Gas water heaters. It includes a mounting plate and a clear cover, which allows you to see the diagnostic LEDs without having to remove the protective housing. This makes regular maintenance and troubleshooting significantly easier than with standard boards.
This board uses jumpers to allow for universal application across different Atwood connector styles. If your water heater uses a 4 or 6 position edge connector, or the newer 10 pin connector, this board serves as a direct plug-and-play replacement. By removing specific jumpers, you can also configure the board to function like a UIB S ignitor for older furnaces, water heaters, and refrigerators.
The listing doesn’t mention Suburban compatibility for this board. This architecture is specific to Atwood systems and won’t function correctly on other brands. Always verify your current connector type before installation to ensure the jumper configuration matches your specific model. The unit operates on standard mobile power and features built-in fuse and surge protection to prevent common electrical failures.
8. Suburban 520814 Module Board
The Suburban 520814 Module Board serves as a direct replacement for Suburban SW series water heaters, including the SW4D, SW6D, and SW16DEM models. Its primary advantage is a high-class waterproof coating that guards against moisture and electrical leakage. This makes it a smart choice if your RV frequently encounters humid climates or damp storage conditions.
Installation follows a simple plug-and-play process, allowing you to swap out faulty units without complex wiring. If your current system struggles with inconsistent heating or fails to ignite, this board restores rapid ignition and reliable contact. It also integrates essential safety features like overheat protection to prevent damage during operation.
Always confirm your specific part number before purchasing. This board replaces OEM numbers 520814, 520871, 520820, AP4896608, and 33550L. Don’t attempt to install this in Atwood or Dometic systems, as the pin configurations and control logic are incompatible. This specific unit includes a 12-month warranty.
9. UIB64 Universal Ignition Board
The UIB64 Universal Ignition Board is a compact unit that focuses on core ignition duties. It’s fuse and surge protected, which helps prevent damage from unexpected power spikes in your RV’s electrical system.
The presence of three diagnostic LEDs helps you verify if the board is functioning correctly during your next trip. If the LEDs remain dark when power is applied, check your fuse first; if they blink in a sequence, consult your manual to identify the specific fault code.
This board provides a stable solution for compatible Atwood systems. Because it’s a generic universal board, you must ensure your specific water heater model is supported before purchase. It doesn’t offer the same level of brand-specific design as the Atwood 91365 Control Board.
Measure your existing control space before ordering, as this unit occupies a footprint of 3.25″ by 4.25″. Installing this board in a system that requires a proprietary communication protocol will result in a total failure to ignite. If your current board is TEI certified, this unit serves as a direct, reliable replacement.
10. RV Water Heater Control Board
Best for: Direct replacement of common Atwood parts.
The RV Water Heater Control Board is a replacement for Atwood/Dometic models including the 91365 and 93851. It focuses on providing a reliable, safe operation through integrated overheat and leakage protection. The board is designed to prevent short circuits, which can be a common failure point in older, worn-out boards.
This is a plug-and-play unit, making it a good choice for someone who wants a straightforward replacement without complex configuration. It isn’t suitable for Suburban water heaters. Always check the model list carefully to ensure your specific water heater series is included.
Pros
- Plug-and-play design for easy installation.
- Includes overheat and leakage protection.
- Replaces multiple common Atwood part numbers.
Cons
- Not for Suburban water heaters.
- Lacks advanced diagnostic lights.
How to Choose in Sixty Seconds
Verify Your Brand and Series
The most important step is identifying whether your water heater is a Suburban or an Atwood/Dometic model. These brands use different wiring and mounting configurations, and a board meant for one won’t function in the other. Check the label on your water heater tank or the interior of your RV’s control panel for the exact model number. Never assume a board is universal; if the listing doesn’t explicitly mention your model or part number, don’t purchase it. Confirming this match prevents the most common installation mistakes and ensures the safety of your RV’s electrical system and heating unit.
Understand Connector Types
Water heater boards use different connection styles, such as 4-position edge, 6-position edge, or multi-pin block connectors. Before ordering, look at your existing board to see how it connects to the wiring harness. If your heater uses a multi-pin block connector, a board with only an edge connector won’t fit. Some universal boards, like the UIB64, offer configuration options to handle different connector types, but you must be prepared to set the jumpers correctly.
Prioritize Safety and Diagnostics
When choosing a board, look for features that protect your system, such as fuse and surge protection. These features help prevent electrical damage during power fluctuations, which are common in RV park pedestals. Additionally, diagnostic LEDs are a major advantage if you ever need to troubleshoot ignition issues on the road. A board with LEDs can show you exactly where the ignition sequence is failing, saving you time and frustration. While basic boards will get your water heater running, those with protection and diagnostic features offer better long-term reliability and easier maintenance for the average RV owner. Always consult the RV Industry Association for general safety guidelines regarding RV appliance maintenance and electrical system integrity.
Frequently Asked Questions
Will a universal board work with any RV water heater?
No, universal boards are not compatible with every RV water heater. Boards like the UIB64 are designed only for specific Atwood AC/Gas models using configurable jumpers. They will not work in Suburban systems or other incompatible units, so always check the manufacturer’s compatibility list before purchasing.
What should I do if my water heater still fails to ignite after replacing the board?
If the new board fails to fix the ignition issue, the problem likely lies with the thermal fuse, spark electrode, or gas supply. Check that all connections are secure and observe any diagnostic LEDs for error codes. If you remain unsure, consult a certified RV technician for assistance.
Can I upgrade to a board with diagnostic LEDs if my original board didn’t have them?
You can upgrade to a board with diagnostic LEDs if it is compatible with your specific water heater model and connector style. For instance, the UIB64 can replace certain older Atwood boards while providing diagnostic feedback. Always verify that the connector types match your existing wiring harness before attempting the upgrade.
Does the board’s waterproof rating matter for indoor water heaters?
Waterproofing is most critical for boards exposed to the elements, though it is beneficial for all RV water heater components. If your unit is installed in a well-sealed compartment, high-level protection is less vital than for units exposed to road spray. Regardless, moisture resistance provides valuable protection against condensation.
Closing
Selecting the correct igniter board requires careful attention to your specific water heater brand and connector style. For Suburban owners, the 520814 Control Board provides a reliable, direct-fit solution that prioritizes water resistance and safety for the SW series.
If you own an Atwood or Dometic system, verify your connector type first. Models using a 4-pin and 6-pin edge configuration or a single multi-pin block connector are often compatible with the UIB64 Universal Ignitor Board. This board is a frequent upgrade because its three diagnostic LEDs simplify troubleshooting during service.
If you prefer a direct OEM-style replacement, the 91365 board serves most standard Atwood setups. However, don’t assume universal fitment; the 91367 board, for example, is strictly for specific gas-only models and isn’t compatible with certain GCH6A or GC10A units. Always check your current board’s part number against the manufacturer’s compatibility list before purchasing. A mismatch can lead to poor temperature control or failure to ignite. Once you confirm the match, follow the plug-and-play installation to restore your hot water supply.
