Single-Stage Gas Furnace Main Control Board

Direct Replacement for 920915, 904840, 624742 & 624690

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Product Details

Is your home furnace failing to ignite, continuously running the blower fan, or randomly shutting down in the middle of a heating cycle? When a furnace control board fails, it compromises your entire HVAC system, leaving your home in the cold. Restore steady, reliable, and safe heating with this OE Grade Direct Replacement Single-Stage Gas Furnace Control Board.

Built with premium, moisture-resistant PCB materials and a pre-programmed IC, this upgraded board accurately tracks and regulates critical functions like gas flow, ignition, and fan operation. It features a built-in LED diagnostic system (Green/Red/Yellow) for quick troubleshooting and an integrated safety protection circuit to guard against system overheating. Designed for a simple plug-and-play installation, it directly replaces older modules in Nordyne, Miller, Intertherm, Tappan, Frigidaire, and Gibson single-stage units.

Condition: Brand New. Includes: (1) Furnace Control Board and (4) Plastic Mounting Standoff Pins. Fitment Note: Compatible with G7SA, G7SK, G7SC, and G7SL series upflow, horizontal, and downflow furnaces.

💡 PRO INSTALLATION TIP:
1. SAFETY FIRST: Always turn off the main electrical power breaker and shut off the gas supply line before opening your furnace cabinet! Plugging a live wire into a new board will instantly fry the microprocessors.
2. TAKE PHOTOS: Before disconnecting any wires from your old control board, take several clear pictures of the terminal connections on your smartphone so you know exactly where they go on the new board.
3. LED DIAGNOSTICS: If your furnace acts up in the future, check the LED lights on this new board! An alternating green flash indicates a 1-hour lockout, while a continuous yellow flash means a low flame sensor signal.

Key Features

FEATURES

  • 100% Brand New Integrated Furnace Control Board

  • Direct Replacement for Nordyne 920915 & 904840

  • Compatible with Miller, Intertherm, and Tappan Furnaces

  • Fits Single-Stage Gas Furnaces (Upflow/Downflow/Horizontal)

  • Built-In 3-Color LED Diagnostic Status System

  • Fixes Ignition Failure and Blower Fan Timing Issues

  • Premium Moisture and Corrosion-Resistant PCB Material

  • Pre-Programmed IC for Accurate Gas Flow Regulation

  • High-Quality Relays for Reliable Fan and Heat Control

  • Integrated Safety Protection Guards Against Overheating

  • Hassle-Free Plug-and-Play Installation Setup

  • Includes 4 Plastic Mounting Standoff Pins

  • Precision Engineered for G7SA, G7SK, G7SC Series

  • Replaces Factory Part Numbers 624742 and 624690

  • Sustains Steady Performance in Harsh Environments

  • Advanced Circuitry Eliminates Open Limit Switch Faults

  • Diagnostic Light Identifies Pressure Switch Open Faults

  • Solves Low Flame Sensor Signal Error Codes

  • Standard 1182-201 and 4421M055676 Reference Coding

  • Cost-Effective DIY Solution for HVAC Repair Costs

    • Compatibility Chart

    Fits the following vehicles:

    Make Model Series Specific Sub-Models
    Nordyne / Miller / Intertherm G7SA, G7SK, G7SC, G7SL G7SA126-45D1, G7SA090-35C1, G7SK108-35C1
    Tappan / Frigidaire / Gibson G7SA, G7SK, G7SC, G7SL G7SA126-45D1, G7SA090-35C1, G7SK108-35C1

    Specifications

    Brand: Nationwide (OE Grade Direct Replacement)
    Replaces Part Numbers: 920915, 904840, 624742, 624690, 624844
    Furnace Type: Single-Stage Gas (Upflow / Horizontal / Downflow)
    Board Dimensions: 6.14" Length x 4.6" Width (15.6cm x 11.7cm)
    Diagnostic Indicator: Integrated LED System (Green, Red, Yellow)

    Shipping & Policies

    • ✓ FREE SAME DAY / NEXT DAY SHIPPING
    • • Faster Shipping available - just ask for special requests!
    • • International Buyers Welcome! (Please see note below).
    • ✓ FREE 30-DAY RETURNS
    • • If you are not satisfied, you may return the item for a full refund.
    • ✓ eBay Money Back Guarantee
    • • Buy with confidence. You are 100% protected with the eBay Money Back Guarantee.
    Important Return Policy Note: To qualify for a free return, the item must be brand new, unused, and in its original condition. Circuit boards that exhibit scorch marks, blown fuses, or fried IC chips caused by electrical short-circuits during improper DIY installation (failing to turn off main power) cannot be accepted for a full return.
    International Buyers – Please Note:

    Import duties, taxes, and charges are not included in the item price or shipping cost. These charges are the buyer's responsibility. Please check with your country's customs office to determine what these additional costs will be prior to bidding or buying.

    Thank you for your understanding.

    Questions? Please feel free to send a message. We reply quick!

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