White Rodgers 21V51U-843 ECM Furnace Control Board Kit 2-Stage HSI

SKU: 21V51U-843

Weight	4 lbs
Dimensions	12 × 11 × 5 in

$518.36

In stock — available to order.

Sold individually. Each quantity ordered is one unit. Kits are one complete kit; products sold by length use the stated length unit.

Same-item volume pricing

Quantity	Unit price	Saving
1–4	$518.36	0%
5–9	$492.44	5%
10+	$466.52	10%

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White Rodgers 21V51U-843 ECM Furnace Control Board Kit 2-Stage HSI

Specifications & product details

Overview

White Rodgers 21V51U-843 Universal Two-Stage ECM Furnace Control KitThe 21V51U-843 Integrated Furnace Control Kit is a universal replacement solution for White Rodgers 50V51-XXX and 50V61-XXX two-stage HSI furnace boards.Designed for ECM blower systems, this advanced integrated control kit supports both 80V and 120V ignitors and is compatible with major furnace brands including:Goodman / AmanaColeman / Luxaire / YorkAmerican Standard / TraneLennoxThermo PrideKit Includes:✔ Ignition Control Module✔ Wiring Harness for Goodman/Amana✔ 21D64-2 Universal 120V Nitride Ignitor Kit✔ OEM Cross Reference DocumentationAdvanced

Features

Historical fault code retrievalFlame current measurement pointsAdjustable fan off delayAutomatic second stage delay (dip switch selectable)120 VAC accessory output for humidifier & air cleanerDesigned for two-stage gas furnace systemsThis board is ideal for HVAC contractors seeking a reliable, universal replacement that reduces truck stock and increases service efficiency.Professional-grade replacement for residential and light commercial furnace systems.

Product details

Part / SKU	21V51U-843

Package includes

White Rodgers 21V51U-843 ECM Furnace Control Board Kit 2-Stage HSI

Included components and any stated pack quantity are as described in this listing. Optional accessories shown separately are sold separately unless expressly included above.

Specifications and compatibility

Description	Universal Two-Stage HSI Integrated V/S Furnace Control Kit

Compatibility & part-number help

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