Pentair MasterTemp & Max-E-Therm Pool Heater Stack Flue Sensor | 42002-0024S Inflatable Floats & Ride-Ons or related component faults —

or related component faults — the sensor interrupts the circuit and triggers a safety shutdown

Genuine Pentair replacement part

These contaminants collect and build up in spas

Cal Spas - - For use with Swim Spa remote equipment

8" OD systems require removal of black stand pipe — see installation note above

Pentair MasterTemp & Max-E-Therm Pool Heater Stack Flue Sensor | 42002-0024S Inflatable Floats & Ride-Ons or related component faults —The Pentair Stack Flue Sensor (42002 0024S) is the OEM replacement exhaust temperature sensor for select Pentair MasterTemp and Sta Rite Max E Therm pool heaters. If your heater is shutting down unexpectedly, displaying a flue related fault, or failing to complete ignition, this sensor is a common service component to inspect and replace. IMPORTANT: NOT COMPATIBLE WITH MASTERTEMP 125 This sensor does not fit the MasterTemp 125 heater. MasterTemp 125