White-Rodgers 50A55-843


Universal Silicon Carbide Integrated Ignition Control

50A55-843 686041
Average Rating: 4.5
Read Reviews (10) Write a Review
$101.46+ 8 Business Day Shipping $9.79


ItemIgnition Module
TypeHot Surface Ignition
Electrical Connections1/4" Quick Connect
Amps AC0.45
Control Volts24
Electrical Ratings24 VAC
Gas TypeLP/NG
Height (In.)1 1/2
Igniter Warm-Up Time (Sec.)17
Prepurge Time (Sec.)30
Width (In.)4
For Use With Residential, Commercial Heating Equipment
Replaces 50A50/50A55-120, -143, -285, -286, -288, -438, -571, -474
UPC 786710100437
Weight 1.250000


The White Rodgers 50A55-843 Universal Silicon Carbide Integrated Ignition module employs a microprocessor which continually monitors, analyzes and controls the proper operation of the gas burner, inducer and fan. This one module can replace many of the 50A50/50A55-xxx integrated ignition carbide modules that have been manufactured by White-Rodgers (listed above) and some competitive models.

Includes an extensive cross-reference guide, additional jumper wires, additional wiring harness and a jumper for Trane applications. The module also has terminals for powering a humidifier and electronic air cleaner. For use in gas fired forced air furnaces with integrated furnace control modules with a silicon carbide ignitor.

Customer Reviews

Average Product Rating: 4.5
based on 10 reviews

good deal

Tuesday, February 12, 2013

saved me 3 bills

quick and inexpensive

Submitted by Eric G

Arrived in the nick of time

Saturday, November 03, 2012

I searched the internet many times over for a resolution to the burned out circuit board I needed to replace ASAP. This site stood out among the rest. It had a spectacular price and many options for payments. Overall, the item was delivered by following week. Only thing I would add, the board orientation was different whereas the OEM board had drilled hole that had been tapered and tied with a plastic strap. It was not a problem though. The parts came with plenty of screws and board had enough perforated holes to choose from.

I like the fact it is an improvement of the OEM. Everything is clearly marked and labeled.

Nothing really.

Submitted by DIYman

Thank You DrillSpot

Thursday, April 26, 2012

A perfect solution, saving me about $250.00 over the cost of an OEM board and a service call. Installation took me about half an hour with no surprises. Included igniter adapter and lead extensions made install easy. If you can replace a wall plug or light switch you, can replace this control.

Ignition adapter and lead extensions

Install itself

Submitted by feslope

These Are The People To Do Business With!

Tuesday, April 17, 2012

The first guy I ordered from, (NOT Drillspot) tried to get away with sending a used control board as new. When confronted with scratch marks on the electrodes and screw sockets, he said 'Oops, sorry, I sent the wrong one.' These guys were on the up and up and FAST! Had that module shipped the day after ordering and arrived a day or so after that.

It was the correct one, new as promised and delivered sooner than I thought possible

I guess they could throw in a free dinner or trip to Hawaii with it

Submitted by Jerry K

Time and Money Saver

Sunday, January 15, 2012

Ordered online, very easy process. Product delivered in a few days. Was very easy to install (helps to be a electrical technician). My furnice is up and running. Saved about $150!

It was not the orginal but the replacement was easy to adapt

Nothing, it started up right away with no problems

Submitted by wingrider

Wrong Control Board

Wednesday, December 28, 2011

After searching drillspot website for my model number, I was redirected to this unit which stated that it replaces most 50A55-xxx units. After waiting several days for delivery, installed the unit but did not work. Contacted manufacturer who said this unit was NOT INTERCHANGABLE! Contacted drillspot customer service to return or exchange and they would not. Be cautious when dealing with Drillspot.


Ability to exhange for the correct model

Submitted by Charles E

We Have Heat

Tuesday, September 27, 2011

Great product!

Did exactly what I needed it to do

Submitted by Michael S

Worked Great!

Tuesday, July 26, 2011

I needed a new controller for my furnace due to mold. I was a little worried at first since it was a Universal controller but it worked great, installed in about 10 minutes and saved me hundreds of dollars! Awesome

Price and delivery


Submitted by Scott wiuff


Tuesday, May 03, 2011

Fast and what I wanted.


Submitted by anthony JOHNSON

Works as Expected

Tuesday, December 21, 2010

Works great in Trane furnace. Added the required (included) jumper for Trane application. Everything works as it should. Great price, prompt shipping.

Direct replacement

Submitted by Dan Taylor
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