Sta-Rite 42001-0061S air flow switch for Max-E-Therm SR200, SR333 and SR400 heatersSta-Rite Max-E-Therm Air Flow Switch, 42001-0061S In stock$15799
Sta-Rite 42001-0061S air flow switch for Max-E-Therm SR200, SR333 and SR400 heaters
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Sta-Rite Max-E-Therm Air Flow Switch, 42001-0061S

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$15799
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Quick overview

  • Genuine OEM new Sta-Rite part number 42001-0061S, not a generic switch.
  • Fits three heaters Max-E-Therm SR200, SR333 and SR400 models.
  • Proves blower airflow the switch confirms the combustion blower is moving air before the heater is allowed to light.
  • Common fault part a failed or stuck air flow switch is a frequent cause of a Max-E-Therm that will not ignite.
  • Direct replacement the same part the heater left the factory with, so it mounts and wires the same way.
  • Part of the electrical system listed with the terminal board, transformer, ignition module and thermistor on the same heater.
Full description and specifications ↓

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Product details

The Sta-Rite 42001-0061S is the air flow switch for the Max-E-Therm SR200, SR333 and SR400 pool heaters. It is a new, genuine OEM part.

What it does

The air flow switch sits in the heater's electrical system and proves that the combustion blower is moving air. Only when it closes does the control let the ignition sequence go ahead. A switch that has failed or will not close leaves a heater that hums the blower but never lights, which is one of the more common Max-E-Therm complaints.

Fit

Because it is the factory part, it mounts and wires exactly like the switch coming out. It belongs to the same electrical group as the terminal board, transformer, ignition control module, thermistor and high limit switch, so if you are working through a no-ignition fault, those are the other parts to check.

Specifications
Brand Sta-Rite
Manufacturer part number 42001-0061S
UPC 022315210615
Type Air flow switch
Fits Sta-Rite Max-E-Therm SR200, SR333, SR400
Condition New, OEM
Shipping weight 0.25 lb
Ships Parcel

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Questions and answers

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

Which heaters does this fit?
The Sta-Rite Max-E-Therm SR200, SR333 and SR400.
What does the air flow switch do?
It senses that the combustion blower is moving air and closes to allow the ignition sequence. If it does not close, the heater will not light.
Is this the genuine Sta-Rite part?
Yes. It is the new OEM part, number 42001-0061S.
My heater will not fire. Could this be the cause?
A failed air flow switch is one of the common reasons a Max-E-Therm will not ignite. Confirm the blower is running and the switch is not closing before replacing it, since the ignition module, transformer and other electrical parts can produce similar symptoms.
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