Resideo ST9120U1011 Fan Timer Freon supporting overall system longevity and

supporting overall system longevity and operational safety

serving as the official successor to part number 1051491

this switch protects the heat exchanger by monitoring for venting obstructions or combustion blower failure

OEM Precision: Calibrated with a 0

streamlining the installation process for HVAC professionals

Resideo ST9120U1011 Fan Timer Freon supporting overall system longevity andThe Resideo ST9120U1011 is a universal electronic fan timer engineered to serve as a comprehensive control solution for gas warm air appliances. This furnace fan timer board integrates the management of combustion blowers and circulating fan operations into a single robust platform. Designed for field flexibility, it features DIP switch selectable delay settings that allow for precise timing adjustments. Specifically, the ST9120U1011 provides