475978 | Pentair Heater Fan Control Board For ETI 400 Heaters Pentair Superflo Drive Cover Engineered to provide balanced and

Engineered to provide balanced and stable movement

High-Quality and Durable: Built from high-quality materials

OEM Quality: Manufactured to genuine Pentair OEM standards for reliable integration and dependable performance

Diagnosing Cleaner Stability and Maneuverability Issues

The Galvanized Steel Nipple

475978 | Pentair Heater Fan Control Board For ETI 400 Heaters Pentair Superflo Drive Cover Engineered to provide balanced andThe Pentair 475978 Heater Fan Control Board is an OEM replacement part designed for ETI 400 High Efficiency Pool and Spa Heaters. This board plays a critical role in managing fan operations, ensuring the heater runs safely and efficiently by monitoring air flow through the system. Equipped with air flow switches, it senses pressure differentials and signals the control board when proper circulation is achieved, protecting the heater from unsafe