Pentair
Pentair Stack Flue Sensor 42002-0024S – for MasterTemp & Max-E-Therm Heaters
Pentair Stack Flue Sensor
Genuine Pentair replacement stack flue temperature sensor for compatible MasterTemp and Sta-Rite Max-E-Therm pool heaters. Designed to monitor heater exhaust temperature as part of the heater's safety control system.
Warranty Information
1-Year Manufacturer Warranty
Ultimate Pools is your first point of contact for compatibility verification, installation guidance, and warranty support.
The Pentair Stack Flue Sensor (42002-0024S) is a genuine replacement temperature sensor designed for compatible Pentair MasterTemp and Sta-Rite Max-E-Therm pool and spa heaters. The sensor monitors stack flue temperature and provides temperature information to the heater's electronic control system as part of its safety monitoring functions.
Designed for use with specified natural gas and propane heater models, the 42002-0024S is a replacement component for servicing a faulty or damaged stack flue sensor. Correct sensor operation is important to the heater's temperature monitoring and protective shutdown functions. Professional diagnosis is recommended before replacement to confirm that the sensor is the cause of the reported heater fault.
Key Features
Original Pentair replacement component for specified MasterTemp and Sta-Rite Max-E-Therm heaters.
Monitors the heater's exhaust flue temperature during operation.
Provides temperature information used by the heater's electronic safety controls.
Designed for the listed Pentair MasterTemp heater models, including specified MasterTemp 125 above-ground units.
Compatible with specified SR200, SR333 and SR400 heater models.
Listed for compatible natural gas and propane heater configurations.
Compatibility & Fitment
Compatible with the following Pentair and Sta-Rite pool heater models:
- Pentair MasterTemp Heaters: 460730, 460731, 460732, 460733, 460734, 460735, 460736, 460737, 460792, 460793, 460805, 460806.
- Pentair MasterTemp 125 Above-Ground Heaters: 461058, 461059, 461060, 461061.
- Sta-Rite Max-E-Therm Heaters: SR200HD, SR200LP, SR200NA, SR333HD, SR333LP, SR333NA, SR400HD, SR400LP, SR400NA.
Compatible Gas Types: Natural Gas and Propane.
Compatibility may vary by production year, configuration and installation. Verify your exact model and part number before ordering.
Applications
- Replacement of a faulty or damaged stack flue sensor in compatible Pentair MasterTemp heaters
- Stack flue temperature monitoring in specified Sta-Rite Max-E-Therm heaters
- Heater diagnostics involving stack flue temperature sensor faults
- Repair of compatible MasterTemp 125 above-ground pool heaters
- Professional servicing of natural gas and propane pool heater safety control systems
A stack flue temperature fault does not necessarily indicate a defective sensor. Other heater conditions may cause temperature-related faults. Have the heater professionally diagnosed before replacing the sensor.
Professional Installation Recommended
All service on gas appliances shall be performed by a licensed HVAC contractor. Sensor replacement must follow Pentair's manufacturer instructions and all applicable electrical, plumbing, gas, bonding and building codes.
Before servicing, the heater must be safely shut down, disconnected from electrical power as required and allowed to cool. The contractor should confirm the heater model, inspect the sensor and associated wiring, diagnose the reported fault and verify correct operation of the heater's safety controls following replacement.
Important: Never bypass, disconnect or defeat the stack flue sensor or any heater safety device to permit continued operation.
Specifications
| SKU | 42002-0024S |
| Brand | Pentair |
| Product Type | Pool Heater Stack Flue Temperature Sensor |
| Part Number | 42002-0024S |
| Function | Stack Flue Temperature Monitoring |
| Compatibility | Specified Pentair MasterTemp, MasterTemp 125 A/G and Sta-Rite Max-E-Therm SR200, SR333 and SR400 heater models. See Compatibility & Fitment for exact model numbers. |
| Compatible Gas Types | Natural Gas and Propane |
| Application | Pool Heater Exhaust Temperature Monitoring and Safety Control |
| Installation | Licensed HVAC Contractor Required |
| Warranty | 1-Year Manufacturer Warranty |
| Final Sale | Yes |
Frequently Asked Questions
The stack flue sensor monitors exhaust flue temperature in compatible Pentair and Sta-Rite pool heaters. The heater's electronic control system uses this temperature information as part of its safety monitoring functions.
The 42002-0024S is listed for specified Pentair MasterTemp, MasterTemp 125 above-ground and Sta-Rite Max-E-Therm SR200, SR333 and SR400 heater models. Refer to the Compatibility & Fitment section for the complete list of model numbers.
Not necessarily. A stack flue temperature fault may be associated with the sensor, its wiring or another heater operating condition. Professional diagnosis is recommended to determine the cause before replacing parts.
All service on gas appliances shall be performed by a licensed HVAC contractor. The technician should follow Pentair's service instructions and verify proper heater safety operation after installation.
The Pentair 42002-0024S stack flue sensor includes a 1-year manufacturer warranty and is designated final sale. Confirm your exact heater model and replacement part number before purchasing.
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