NBK-21284 Direct Spark Ignition Control

NBK-21284 Direct Spark Ignition Control – Direct Replacement for Fenwal 35-705506-023Restore 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 SpecificationsPart Number: NBK-21284Product Type: Direct Spark Ignition ControlApplication: HVAC Ignition Control SystemsCondition: New Replacement PartDirect Replacement ForFenwal 35-705506-023Common Symptoms of a Failed Ignition ControlBurner fails to ignite or goes into lockoutNo spark at igniterSystem lights then shuts off immediatelyFlame not being sensed or recognizedHeating system will not startWhy Choose the NBK-21284?True Direct Replacement – OEM-equivalent fit for Fenwal 35-705506-023 direct spark ignition applicationsDirect Spark Technology – Reliable spark sequencing and flame sensing for safe, consistent burner operationOEM-Grade Reliability – Meets or exceeds original Fenwal specificationsDurable Construction – Built for long service life in demanding HVAC ignition environmentsFast Field Replacement – Direct-fit installation with no modifications requiredImportant: 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.