White-Rodgers Universal Single-Stage Furnace Control Kit
White-Rodgers Universal Single-Stage Furnace Control Kit
Item # 50M56U-843

The easy-to-install universal furnace control board from White-Rodgers provides quick replacement of virtually all White-Rodgers and competitive single-stage carbide and nitrite HSI systems. 


Features and Benefits

This kit includes an ignition control module, 12 quick-connect wiring harnesses, universal igniter and OEM cross reference.

  • 3 fan speeds - cool, low heat and hight heat
  • Color-coded thermostat connection
  • System diagnostics with fault recall
  • Cover label with diagnostic table
  • Red LED for diagnostics
  • Low voltage fuse protection
  • Humidifier and electronic air cleaner connections (optional)
  • 1-year warranty
Product Specifications
5.25" x 7.00" x 1.25" (WHD)
Input Voltage
Maximum Input Current
0.45 amp @ 25VAC
Relay Load Ratings
Valve relay: 1.5 amp @ 25VAC
Igniter relay: 6.0 amps @ 120VAC
Inducer relay: 2.2 FLA-3.5 LRA @ 120VAC
Circulator relay: 14.5 FLA-25.0 LRA @120VAC
Flame Current Requirements
Minimum current to insure flame detection: 1 µa DC
Maximum current for non-detection: 0.1 µa DC
Maximum allowable leakage resistance: 100 M ohms
Operating Temperature
-40º to 176º F
Timing Specifications
Flame establishing time: 0.8 seconds
Flame failure response time: 2.0 seconds
Surface mount mulitpoise


Emerson Training

Emerson Training

Get ready for the heating season!

Learn about:

  • Universal Hot Surface Igniters
  • Integrated Furnace Control Kits
  • Hot Surface Ignition Modules
  • Spark Ignition Modules

5418 Elmwood Ave | Indianapolis IN 46203 | 888-652-9663