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Furnace Control Kit, HSI Integrated, Carrier Single Stage, 120 Vac


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Manufacturer Part No:
Newark Part No.:
Technical Datasheet:
50M56U-751   Datasheet
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Product Information

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Ignition Ctrl Mod, Install Instructions & OEM Cross-Ref, Interconnect Harnesses, Bag of Accessories


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Technical Docs (2)

Product Overview

The 50M56U-751 from White Rodgers is a carrier single stage HSI integrated furnace control kit. This kit ensures continued peak system performance and Easy Install Kit includes everything user need for quick and accurate replacement. The kit replaces HK42FZ004, HK42FZ009, HK42FZ016, HK42FZ007, HK42FZ011, HK42FZ034, HK42FZ008, HK42FZ013 and 325878-751 carrier controls. The control employs a microprocessor to continually monitor, analyse and control the proper operation of the gas burner, inducer and fan. It features system diagnostic LED with fault recall, low-speed continuous fan option, 120VAC ignitor output, 120 or 24VAC humidifier output, 120VAC electronic air cleaner output and self-test installation routine.
  • Input voltage of 25VAC, 50/60Hz
  • Maximum input current at 25VAC is 0.45A
  • Valve relay of 1.5A at 25VAC 50/60Hz 0.6pf, ignitor relay of 6A at 120VAC 50/60Hz (resistive)
  • Inducer relay of 2.2 FLA to 3.5 LRA at 120VAC, circulator relay of 14.5 FLA to 25 LRA at 120VAC
  • Operating temperature range from-40°F to 175°F (-40°C to 80°C)
  • Dimension is 5.25" W x 7" H x 1.25" D
  • Natural, manufactured, mixed, liquefied petroleum and LP gas air mixtures are approved gases for use


Automation & Process Control


1 x 50M56-751 ignition control board, 1 x set of interconnect harnesses, 1 x manual, 1 x bag of accessories.


The control board in this kit cannot be twinned with any of the carrier circuit boards.

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