Carrier HK42FZ064 Integrated Furnace Control Board

Replaces older part numbers: HK42FZ043, HK42FZ051, and HK42FZ055.

Restore smart, factory-standard operation to your furnace with the genuine Carrier HK42FZ064 Circuit Board. As a critical Factory Authorized Part for Carrier, Bryant, and Payne equipment, this integrated furnace control (IFC) manages the critical ignition sequence, safety limits, blower timing, and gas valve operations of your heating system.

The Carrier HK42FZ064 features advanced microprocessor logic that constantly checks your furnace for unsafe operating conditions. It includes an onboard diagnostic LED indicator that flashes clear fault codes, helping technicians and homeowners troubleshoot system errors effortlessly and eliminate guesswork during maintenance.

Technical Specifications:

  • Model/Part Number: HK42FZ064
  • Control Type: Integrated Furnace Control (IFC)
  • Voltage Compatibility: 24 VAC Control Circuit / 120 VAC Line Voltage Input
  • Frequency: 60 Hz
  • Diagnostic Interface: Onboard LED Fault Code Indicator
  • System Integration: Operates induction fan motors, main indoor blower motors, gas valves, igniters, and system safety switches (rollout, limit, pressure switches).

Key Features & Benefits:

  • Genuine Carrier OEM Engineering: Built to exact factory safety and performance tolerances. Unlike universal control boards that require complex wire-splicing or dip-switch configurations, this board offers a clean, direct layout designed for a quick plug-and-play fit.
  • Onboard Diagnostic Codes: The built-in LED indicator instantly alerts you to precise mechanical or electrical errors, slashing diagnostic times and making part replacement simple.
  • Flame Safeguard Management: Constantly monitors the flame sensor signal to ensure safe fuel ignition and prevent unburned gas from leaking into your property.
  • Enhanced System Durability: Constructed with heavy-duty trace lines and rugged relays engineered to endure the intense temperature swings and voltage cycles of peak winter operation.

Compatibility & Cross-Reference

The HK42FZ064 serves as the official, factory-authorized update for multiple legacy controls. It is a verified direct fit and replacement for:

  • Older Part Numbers: HK42FZ043, HK42FZ051, and HK42FZ055.
  • Equipment Type: Widely used in residential gas furnaces, electric air handlers, and packaged heating and cooling configurations.

Why Buy From Shortys HVAC Supplies?

At Shortys HVAC, we are committed to providing Original Equipment Manufacturer (OEM) parts so your equipment operates exactly as the engineers intended. Choosing factory-certified components protects your system's long-term reliability, preserves safety ratings, and maintains manufacturer warranty compliance.

Shipping Information: We provide competitive, fast shipping rates across the continental United States, delivering critical electronic replacement components straight to your door to drastically reduce system downtime.

$784.00

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  • Model: HK42FZ064
  • Manufactured by: Carrier
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