a secondary A2-IntelliTimer or specific relay kit is required to sense the higher voltage current

OEM Compatibility: Specifically designed for Lennox furnace limit switch replacement

utilizing this genuine Hartland Controls HCCY2XQ02AG103 equivalent ensures the circuit logic and amperage draw remain within original manufacturer specifications

providing enough power to overcome resistance in well-maintained ducts

Viessmann 7871315 Control 323080-701 a secondary A2-IntelliTimer or specificThe Viessmann 7871315 Burner Control Unit is a critical microprocessor based LGM29. 55B6201 burner controller specifically engineered for the Vitodens 200 WB2A series gas fired condensing boilers. Designed to manage the entire combustion sequence, this genuine OEM Viessmann control board provides high precision modulation of the fuel air mixture, ensuring peak operational efficiency and reduced emissions. It serves as the primary logic module for