White Rodgers 21V51U-843 White Rogers Universal Two-stage HSI Integrated Igniter and Module Furnace Control Kit

Part #: 21V51U-843

Genuine OEM White Rodgers Part

$467.04
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Product Description
White Rogers Universal Two-stage HSI Integrated Igniter and Module Furnace Control Kit 21V51U-843

Features
• 120 VAC Ignitor Output
• 120 VAC Two-Speed Inducer Output
• 120 VAC Humidifier Output
• 120 VAC Electronic Air Cleaner Output
• 2-Stage Gas Valve Output
• 16-Pin Variable Speed Circulator Output
• OEM Application – Dipswitch Selectable
• Fuse Protection – 3 Amp
• Furnace Status LED – Tri-Color (Green, Red and Amber)
• CFM LED – (Green)
• Heat Fan OFF Delay (Dipswitch Selectable)
• Fan ON Delay for Cooling
• Auto Second Stage Delay (Dipswitch Selectable Mode)
• Historical Fault Retrieval by Pushbutton
• YLO, Y, W, W2, R, G, C, O, BK/DS/Dehum Terminals
• Pressure Switch Inputs and Monitoring
• Flash Microprocessor with Non-Volatile Memory
• Flame Current Measurement Points

21V51U-843 Cross-Reference:

Lennox 18M9901, 49M5901, 50V61-120, - Must replace old igniter with new 21D64-2*
Amana / Goodman 20300002, 20300004, B1809925, B1809927, B1809927S - Must replace old igniter with new 21D64-2* USE Wiring Harnesses for Amana/Goodman
Amana / Goodman 50V51-288, 50V51-289, 50V51-290, PCB00106, PCB00106S, PCBBF106, PCBBF106S, PCBBF107S USE Wiring Harnesses for Amana/Goodman
Coleman / Evcon / Luxaire / York 50V51-243 - Use old igniter or new one
American Standard / Trane 50V51-507, CNT03078, D156245P01, D34142P01, X13650840010 - Must replace old igniter with new 21D64-2*
Thermo Pride 50V61-143 - Must replace old igniter with new 21D64-2*

Note: The installer may have to modify existing ignitor hole to accommodate
the new 21D64-2, with ceramic diameter (0.394").
*21D64-2 Ignitor Note:
In these applications, the existing 80V ignitor must be replaced by the 120V 21D64-2 ignitor.

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This is a genuine OEM item made by White Rodgers

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Categories Found In:
Furnace Circuit Control Boards
Furnace Parts

NOTE: When ordering parts from the website, please verify your part number is correct for your model before ordering. Parts may look the same but the size and shape can have small variations. For assistance call us at 1-877-733-9241.

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