1
8
NEALMART 50A55-474 Furnace Control Board – Replacement for White-Rodgers 50A55-3797
Overview Meet the NEALMART 50A55-474 furnace control board, a robust replacement designed to slot into common single-stage furnaces that previously...
Vendor:
NEALMART
Product type:
Tools & Hardware
- $126.10
- $126.10
- Unit price
- per
Subtotal:
$126.10
Free Shipping
We offer free standard shipping to every province and territory in Canada.
Free Returns
Learn More.
Seasonal Shipping Delays to Outer Regions
Learn More.
Description
xOverview
Meet the NEALMART 50A55-474 furnace control board, a robust replacement designed to slot into common single-stage furnaces that previously used White-Rodgers 50A55-3797. This board also serves as a replacement for Integrated Furnace Control boards CNT02891, CNT03799, and CNT02789, offering a familiar control setup while refreshing worn components. Whether you’re upgrading an aging system or restoring steady operation, this board aims to provide a solid foundation for reliable furnace control.
What it does
Powered by a microprocessor, this control continuously monitors the gas ignition sequence, inducer operation, and fan output. The result is responsive management of the ignition cycle and airflow, helping the furnace react to changing conditions in real time. While results can vary by installation, the board’s ongoing supervision is designed to support stable operation and safer startup sequences.
Compatibility and replacement scope
The NEALMART 50A55-474 is compatible with multiple White-Rodgers configurations: 50A55-3797, 50A55-474, 50A55-476, and 50A55-571. It replaces older Integrated Furnace Control boards CNT02891, CNT03799, and CNT02789, making it a versatile option for aging equipment. This broad compatibility helps reduce the need for multiple part hunts when upgrading an older furnace model.
Key specifications and capabilities
- Input Voltage: 25 VAC, 50/60 Hz
- Max Input Current at 25 VAC: 0.45 A
- Relay Loads: Valve 1.5 A at 25 VAC; Ignitor 6.0 A at 120 VAC; Inducer 2.2 FLA-3.5 LRA at 120 VAC; Circulator 14.5 FLA-25.0 LRA at 120 VAC
- Self-monitoring: The board tracks essential functions and signals a failure code via LED when issues are detected
- Repair note: If internal failure occurs, the entire control should be replaced rather than repaired
What to expect during use
With microprocessor supervision, the control analyzes performance and signals when maintenance or replacement may be warranted. Expect a compact, integrated unit that supports ignition control and system monitoring, contributing to smoother operation and fewer unexpected shutdowns. Individual outcomes depend on the furnace model, installation quality, and surrounding components.
Installation tips and best practices
- Before removing the old board, take a photo of the wiring layout for reference
- Label wires and verify correct terminal alignment on the new board
- Ensure the power is off and the gas supply is safely managed during replacement
Why choose NEALMART
NEALMART offers a practical replacement option with broad model coverage, diagnostic cues, and a support-focused approach to installation questions. This board is designed to slot into existing control architectures without requiring major changes to the furnace design.
FAQ
Q: What does the NEALMART 50A55-474 furnace control board replace?
A: It replaces White-Rodgers 50A55-3797 and related CNT controllers, offering replacement compatibility for common single-stage furnaces.
Q: What should I do before installing this control board?
A: Take a photo of the existing wiring and label terminals to improve fit; ensure power is off before removing the old board.
Shipping & Return
xShipping (Canada)
We offer free shipping on all products across Canada. Orders are typically prepared within 1–2 business days. After dispatch, delivery usually takes 3–5 business days. For remote or hard-to-reach areas, delivery may take 5–7 business days.
We may ship with Asendia, UniUni, Purolator, FedEx, or Canada Post depending on your address, package size, and the item’s handling requirements. P.O. Boxes are accepted where the selected carrier supports them.
Returns (30 Days)
We accept returns on most items within 30 days of delivery. Items must be returned in the condition you received them (new, unused, and with original packaging where applicable). If you receive the wrong or defective item, we’ll make it right.
To start a return, please email us at handyskook@gmail.com with your order number and a brief description of the issue. We’ll reply within 1 business day with the next steps.
Refunds
Once your return is received and inspected, we’ll process your refund to the original payment method. Processing times can vary by payment provider, but most refunds are completed within 5–10 business days after approval.
Order Tracking
When your order ships, you’ll receive a confirmation email with tracking details (when available). If you need help locating your tracking information, contact us at handyskook@gmail.com.
- Choosing a selection results in a full page refresh.
