475978 | Pentair Heater Fan Control Board For ETI 400 Heaters Pentair Superflo Drive Cover Uniform DE Powder Flow: Enhances

Uniform DE Powder Flow: Enhances filtration by ensuring even distribution of diatomaceous earth throughout the grid

Diagnosing Cleaner Stability and Maneuverability Issues

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

it enhances your automation experience and supports reliable performance

heater lights then shuts off possible control board issue

475978 | Pentair Heater Fan Control Board For ETI 400 Heaters Pentair Superflo Drive Cover Uniform DE Powder Flow: EnhancesThe 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