Replacement HVAC Part

The Carlin 5020002S (Model 50200) is a reliable oil burner primary control engineered for direct replacement in residential and light commercial heating systems. This interrupted duty ignition control delivers dependable performance in furnace and boiler applications requiring automatic ignition and flame safety management. The control features a fixed 15-second trial for ignition (TFI) period with a 30-second option available for specific applications. Upon flame detection failure, the unit responds in 1.3 seconds and enters recycle mode, waiting 65 seconds before attempting re-ignition. After three consecutive lockout cycles, the serviceman reset protection engages to prevent continuous recycling and potential equipment damage, requiring manual intervention to clear the fault condition. Diagnostic functionality is enhanced through LED indicator status monitoring: green illumination indicates normal operation, amber flashing signals pump prime mode, and red flashing alerts the operator to flame failure or active recycling conditions. When a lockout occurs, the constant red LED display and closed alarm contacts provide immediate notification of a control fault requiring attention. The 5020002S is designed as a like-for-like replacement for heating systems previously equipped with Carlin CAR5020002S controls and compatible units in this series. This primary control meets the safety and operational requirements of modern oil-fired heating equipment while providing the diagnostics needed for efficient troubleshooting and maintenance. Ideal for HVAC contractors, facilities managers, and heating system technicians performing maintenance or replacement work on existing oil burner installations.