A stack flue sensor, located on the exhaust elbow of a pool heater, prevents the flue gas output from exceeding 500°F. When this fails, your system will show error codes E05 or E06 to indicate that the stack flue sensor must be replaced. This replacement stack flue sensor from Optimum Pool Technologies is compatible with Pentair’s MasterTemp, Max-E-Therm, and other Pentair Sta-Rite heaters. It is designed specifically to replace the Sta-Rite heater stack flue sensor.
- Replaces Pentair/Sta-Rite 42002-0024S
- Typical Error Codes: E-05, E-06
- These Pentair MasterTemp error codes usually mean that the stack flue sensor needs to be replaced.
- Location: The Indoor Stack Flue Switch (ES2) / Stack Flue Sensor (SFS) is located on the exhaust Elbow.
- Function: The Stack Flue Sensor prevents the flue gas output from exceeding 500 degrees F +/-18 degrees F.
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