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21M51U-843 White Rodgers Furnace Board Control Kit for 50M61-** 18M3401 83L9301

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Product Description

White Rodgers Furnace Board Part number 21M51U-843.

This is Brand New, Unused, In the Package.

This is a Universal Two-Stage HSI Integrated 3 Speed Speed (PSC) Circulator Furnace Control Kit.

120 VAC 3-speed PSC (Permanent Split Capacitor) circulator output, two-speed
inducer output, 2-stage gas valve output.
Pushbutton fault history retrieval.
Furnace status LED tri-color (green, red and amber).
Heat fan off delay (dipswitch selectable), fan on delay for cooling.
Auto second stage delay (dipswitch selectable).
120 VAC humidifier output/120 VAC electronic air cleaner output.

120 VAC Ignitor Output
120 VAC Two-Speed Inducer Output
120 VAC Humidifier Output
120 VAC Electronic Air Cleaner Output
120 VAC 3-Speed PSC Circulator Output
2-Stage Gas Valve Output
Fuse Protection 3 Amp
Furnace Status LED Tri-Color (Green, Red and Amber)
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, W1, W2, R, G, C, TWIN Terminals
Pressure Switch Inputs and Monitoring
Flash Microprocessor with Non-Volatile Memory
Flame Current Measurement Points

White-Rodgers 50M51-242 and 50M61-XXX's Two-Stage HSI Systems
with 80V or 120V Ignitors.
18M3401, 20300001, 20300003, 50M51-242, 50M61-120, 50M61-288 , 50M61-289,
50M61-480, 50M61-495, 50M61-843 , 83L9301, CNT03077 , X13650839010

Product Reviews

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  1. Trane XL80 Control Board 5 Star Review

    Posted by on 15th Jul 2017

    Received the board the next morning! Took the tech about 20 mins to install. Works great!