Sta-Rite Max-E-Therm Stack Flue Sensor In stock$137¹²

Sta-Rite 42002-0024S Max-E-Therm stack flue sensor

Sta-Rite Max-E-Therm Stack Flue Sensor

Name: Sta-Rite Max-E-Therm Stack Flue Sensor
Brand: Sta-Rite
SKU: STA-151-6279
Price: 137.12 USD
Availability: InStock

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$137¹²

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Quick overview

Genuine Sta-Rite The factory 42002-0024S stack flue sensor, a new OEM part.
Fits three models Made for the Max-E-Therm SR-200, SR-333 and SR-400.
Flue temperature safety The stack flue sensor is how the heater watches exhaust temperature and shuts down when it climbs.
Common fault code source A failed or drifting flue sensor is a frequent cause of a heater locking out on a stack or high limit fault.
Electrical system part Part of the heater electrical system, not the burner assembly.
Direct replacement Replaces the original sensor in the same location with no modification.

Full description and specifications ↓

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Product details

This is the genuine Sta-Rite stack flue sensor, part number 42002-0024S, for Max-E-Therm pool heaters. It fits models SR-200, SR-333 and SR-400.

What it does

The stack flue sensor reads temperature in the flue and reports it back to the heater control. If exhaust temperature runs higher than the design allows, the control shuts the heater down. That protects the heat exchanger and the venting from damage, and it is why a heater will refuse to run on what looks like a healthy day.

Diagnosing it

When a Max-E-Therm locks out on a stack or high limit fault, the sensor is the first suspect, because a failed or drifted sensor reports temperatures that are not there. It is worth checking the flue path and the exchanger for soot or restriction at the same time, since a genuinely overheating stack produces the same symptom for a very different reason.

It is a new OEM part and installs in place of the original.

Specifications
Brand	Sta-Rite
Manufacturer part number	42002-0024S
UPC	022315300897
Type	Stack flue sensor
Fits	Sta-Rite Max-E-Therm SR-200, SR-333, SR-400
Condition	New OEM part
Shipping weight	0.05 lb
Ships	Parcel

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Questions and answers

What people ask about this product, answered by our pool techs.

Which heaters does it fit?

The Sta-Rite Max-E-Therm SR-200, SR-333 and SR-400.

What does the stack flue sensor do?

It reads the temperature at the flue. If exhaust temperature climbs beyond what the heater allows, the control shuts the heater down rather than letting it run damaged.

Is it a genuine part?

Yes. It is a new OEM Sta-Rite part, number 42002-0024S.

My heater keeps locking out on a stack fault. Is this the fix?

It is the first part to check. A drifted or failed flue sensor will trip the lockout on a heater that is otherwise firing normally, though a genuinely restricted or dirty exchanger will do the same, so inspect the flue path too.

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