Pentair Fireman's Switch Fuse 1.25A | Max-E-Therm / MasterTemp Heater | 32850-0099Z Chlorine clear air bleed port ensures

clear air bleed port ensures your filter can purge trapped air on startup — preventing false pressure readings and protecting cartridge integrity over the long term

replace the full set of 12 O-rings — not just the ones showing visible wear

Pentair Part Number 77707-0054 Pro Tip

reducing chlorine output and accelerating cell wear

Brand Equipment Line Model / Part Number Notes Pentair FullFloXF™ Backwash Valve FULLFLOXF — Compatibility is based on Pentair parts documentation and available OEM records

Pentair Fireman's Switch Fuse 1.25A | Max-E-Therm / MasterTemp Heater | 32850-0099Z Chlorine clear air bleed port ensuresThe Pentair Fireman's Switch Fuse (32850 0099Z) is the OEM replacement 1. 25 amp fuse for the fireman's switch circuit in Pentair Max E Therm and MasterTemp pool and spa heaters. IMPORTANT: HEATER ELECTRICAL COMPONENT PROFESSIONAL SERVICE 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.