Pentair Control Board | ETi® 400 Heater | 475975 Automation & Controls Parts If the original rod shows

If the original rod shows corrosion pitting along the threads

This kit provides a complete 4-inch thermoplastic PVC socket-style flange connection with all required hardware included

With 111 pleats of heavy-duty 4 oz

This valve directs water flow through the filter's Filter

Confirm that your filter is the Clean & Clear series

Pentair Control Board | ETi® 400 Heater | 475975 Automation & Controls Parts If the original rod showsThe Pentair Control Board (475975) is the OEM replacement control board for the Pentair ETi 400 Heater, restoring full electronic management of ignition sequencing, temperature regulation, and system fault monitoring. IMPORTANT: LICENSED PROFESSIONAL INSTALLATION REQUIRED Gas and electrical heater components must be serviced by a licensed pool professional or qualified HVAC technician. Do not attempt to service gas or high voltage components without