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A damaged or worn impeller results in reduced flow
When installing the replacement gauge adapter
Automatic Chemical Feeders
Match the color of your existing seal before adding to cart
Pentair Control Board | ETi® 400 Heater | 475975 VLLS103S A damaged or worn impellerThe 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
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