Home » NBK-21284 Direct Spark Ignition Control - Replaces Fenwal 35-705506-023
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NBK-21284 Direct Spark Ignition Control - Replaces Fenwal 35-705506-023

In stock
SKU: SO-21284
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$280.88
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NBK-21284 Direct Spark Ignition Control - Direct Replacement for Fenwal 35-705506-023

Restore safe and reliable burner ignition to your HVAC system with the NBK-21284 Direct Spark Ignition Control. Engineered as a direct OEM-equivalent replacement for Fenwal 35-705506-023, this ignition control module delivers dependable direct spark sequencing and flame sensing - getting your heating system back online quickly and safely without the cost of OEM sourcing.

Key Specifications

  • Part Number: NBK-21284
  • Product Type: Direct Spark Ignition Control
  • Application: HVAC Ignition Control Systems
  • Condition: New Replacement Part

Direct Replacement For

  • Fenwal 35-705506-023

Common Symptoms of a Failed Ignition Control

  • Burner fails to ignite or goes into lockout
  • No spark at igniter
  • System lights then shuts off immediately
  • Flame not being sensed or recognized
  • Heating system will not start

Why Choose the NBK-21284?

  • True Direct Replacement - OEM-equivalent fit for Fenwal 35-705506-023 direct spark ignition applications
  • Direct Spark Technology - Reliable spark sequencing and flame sensing for safe, consistent burner operation
  • OEM-Grade Reliability - Meets or exceeds original Fenwal specifications
  • Durable Construction - Built for long service life in demanding HVAC ignition environments
  • Fast Field Replacement - Direct-fit installation with no modifications required

Important: Ignition controls are safety-critical components. Verify part number compatibility and system specifications before ordering. Installation should be performed by a qualified HVAC technician. Electrical components are non-returnable once installed.