Pentair Thermal Fuse (White) | ETi Series Pool & Spa Heater | 475998 C4440 preventing unfiltered water bypass

preventing unfiltered water bypass

the switch closes and signals the control board to allow ignition to proceed

Your Hayward SwimClear C2025 requires 4 cartridges for a complete service

or stripped base restores the structural integrity of the filter assembly and ensures proper alignment of all connected components

restoring the pump's internal water-tight integrity at the shaft interface

Pentair Thermal Fuse (White) | ETi Series Pool & Spa Heater | 475998 C4440 preventing unfiltered water bypassThe Pentair Thermal Fuse White (475998) is the OEM replacement thermal fuse for the Pentair ETi Series pool and spa heater line, including the ETi 250 and ETi 400 models. 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 proper certification. The thermal fuse is a one