FOMIUZY RV Furnace Control Ignition Circuit Board Part 520820 Fit for Suburban SF-20 SF-25 SF-30 SF-35 SF-42 SF20F SF-25F SF-30F SF-35F SFV-35Q SF-35FQ SF-42F SF-42Q NT Series NT-20SQ NT-30SP NT-34SP — Open-Box, 21% Off

Name: FOMIUZY RV Furnace Control Ignition Circuit Board Part 520820 Fit for Suburban SF-20 SF-25 SF-30 SF-35 SF-42 SF20F SF-25F SF-30F SF-35F SFV-35Q SF-35FQ SF-42F SF-42Q NT Series NT-20SQ NT-30SP NT-34SP
Brand: FOMIUZY
SKU: awhd-us-b0dmt4yjpz
Price: 36.20 USD
Availability: InStock

Brand: FOMIUZY

Condition: Used - VeryGood

$36²⁰

$45⁹⁹

-21% Save $9⁷⁹

Updated: 45 days ago

Buy at Amazon.com

Description

【Direct Replacement】: If your heater will try to light up 3 times and then go out. Or it will start intermittently and then turn off before reaching temperature, or not start at all, having the problem of intermittent ignition, there should be a malfunction in the circuit board, and we recommend you to buy the board to solve the problem. It meets or exceeds the oem standard, and has been tested in the factory, perfectly matches the original furnace, and can be installed directly 【High Quality】: Made of enhanced quality material, corrosion resistant, sensitive and long life. Adopting advanced circuit design and control technology, it can adjust the ignition and constant temperature of the heater more precisely to ensure the high efficiency and stability of the heater. Key components are 100% resoldered to ensure excellent circuit connection. Provide you with long-term stable and excellent performance 【Fits For】: SF Series 12VDC & USE 520832 Wire Kit :SF-20, SF-20F, SF-20FQ, SF-20Q, SF-25, SF-25F, SF-25FQ, SF-25Q, SF-30, SF-30F, SF-30FQ, SF-30Q, SF-35, SF-35F, SF-35FQ, SF-35Q, SF-42, SF-42F, SF-42FQ, SF-42Q, SFV-20, SFV-25, SFV-30, SFV-35, SFV-35Q, SFV-42, SH-35, SH-35F, SH-42, SH-42F, SHD2542 【Fits For】: NT Series 12VDC & NT24/30/34SP&NT40 USE 520839 Wire Kit / NT12/16/20S&NT12/16/20SE USE 520840 wire kit : NT-12EF, NT-12F, NT-12FC, NT-12L, NT-12LE, NT-12MEF, NT-12S, NT-12SE, NT-16EF, NT-16F, NT-16FC, NT-16L, NT-16LE, NT-16MEF, NT-16S, NT-16SE, NT-16SEQ, NT-16SQ, NT-20L, NT-20LE, NT-20S, NT-20SE, NT-20SEQ, NT-20SQ, NT-20T, NT-24M, NT-24S, NT-24SP, NT-25K, NT-30K, NT-30M, NT-30S, NT-30SP, NT-34S, NT-34SP, NT-35K, NT-40, NT-42S, NT-42T 【Buy With Confidence】: Once there is a problem with the product, contact us here to solve it perfectly for you, without worrying about quality problems

Compatible With

SF Series 12VDC & USE 520832 Wire Kit
SF-20, SF-20F, SF-20FQ, SF-20Q, SF-25, SF-25F, SF-25FQ, SF-25Q, SF-30, SF-30F, SF-30FQ, SF-30Q, SF-35, SF-35F, SF-35FQ, SF-35Q, SF-42, SF-42F, SF-42FQ, SF-42Q, SFV-20, SFV-25, SFV-30, SFV-35, SFV-35Q, SFV-42, SH-35, SH-35F, SH-42, SH-42F, SHD2542
NT Series 12VDC & NT24/30/34SP&NT40 USE 520839 Wire Kit / NT12/16/20S&NT12/16/20SE USE 520840 wire kit
NT-12EF, NT-12F, NT-12FC, NT-12L, NT-12LE, NT-12MEF, NT-12S, NT-12SE, NT-16EF, NT-16F, NT-16FC, NT-16L, NT-16LE, NT-16MEF, NT-16S, NT-16SE, NT-16SEQ, NT-16SQ, NT-20L, NT-20LE, NT-20S, NT-20SE, NT-20SEQ, NT-20SQ, NT-20T, NT-24M, NT-24S, NT-24SP, NT-25K, NT-30K, NT-30M, NT-30S, NT-30SP, NT-34S, NT-34SP, NT-35K, NT-40, NT-42S, NT-42T

Note: Please check the part number before buying to make sure it fits your RV

Note: Just pay attention to where the wires on the original board came from so you can connect them properly to the new board.

Note: If it doesn't seem to work even after installation, you may need to investigate further to confirm if the sail switch is not working

Note: Before powering up the motherboard, double check for clearance issues and possible shorts

Package Included:

1 circuit board

About Us

Our products are 100% brand new quality products, welcome to buy. With our best products and best services, we believe this will be a pleasant shopping experience.

We care about our valued customers and hope to establish a long-term business relationship with you, so please help us do better.

Quality Assurance

1. Each item has been factory tested and meets or exceeds oem specifications.

2. Provide lifetime warranty service. If you are not satisfied with the product or the product has quality problems, you can contact us at any time, we will provide you with a satisfactory answer and solve the after-sales problem for you.

We attach great importance to quality and service. If you have any questions about the project or our services, please contact us first. We value your feedback, so we will strive to answer all inquiries within 24 hours.

Buy at Amazon.com

Sold by

Amazon Warehouse

Verified Retailer

Official Amazon outlet for open-box & returned items

Backed by Amazon's A-to-Z Guarantee
30-day return policy
Ships from Amazon fulfillment centers
Price verified on Amazon

Product Details

SKU:: awhd-us-b0dmt4yjpz
Model:: 520820
Country:: US
ASIN:: B0DMT4YJPZ
UPC:: 717089407391

Shopping Smarter

Common questions about buying open-box and refurbished.

Why buy refurbished or open-box?

Refurbished and open-box products offer the same performance as new at a fraction of the price. You're already saving $10 on this listing. They've been inspected, tested, and are ready to use — the only difference is the price tag. Buying refurbished also reduces electronic waste, extending product life cycles and keeping functional devices out of landfills.

What's the difference between open-box and refurbished?

Open-box products are customer returns that have been inspected and confirmed functional. They may show little to no use — often the item was returned simply because the buyer changed their mind. Refurbished products have been professionally repaired or restored by technicians, tested to meet or exceed manufacturer specifications, and sometimes come with a warranty. Both are a smart alternative to buying new.

Why use OpenBoxFox?

Finding refurbished deals is time-consuming — you'd have to check Amazon Warehouse, Reebelo, Dyson Outlet, and others separately for FOMIUZY products. OpenBoxFox aggregates these listings in one place, so you can compare and find the best deal without the legwork. We update pricing daily so you always see current availability and real savings.

Is it safe to buy refurbished?

Yes. Products listed on OpenBoxFox come from established retailers like Amazon, Reebelo, and Dyson — not unknown third-party sellers. Each retailer has buyer protection policies, return windows, and in some cases warranties. You get the price advantage of used goods with the purchase security of a known retailer.