Hayward FDXLWPS1930 H-Series pressure switchHayward H-Series Pressure Switch, FDXLWPS1930 In stock$5299
Hayward FDXLWPS1930 H-Series pressure switch
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Hayward H-Series Pressure Switch, FDXLWPS1930

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$5299
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Quick overview

  • Genuine Hayward The factory FDXLWPS1930 switch for the H-Series heater.
  • Covers the whole FD range Listed for models H150FD, H200FD, H250FD, H300FD, H350FD and H400FD.
  • Water flow safety The switch proves flow before the heater is allowed to fire.
  • Common no fire cause A failed switch keeps a heater locked out even when the pump and filter are fine.
  • Direct replacement Fits the original position with no modification.
  • Universal H-Series Low NOx Built for the Low NOx version of the Universal H-Series.
Full description and specifications ↓

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Product details

The Hayward FDXLWPS1930 is the pressure switch for Universal H-Series Low NOx heaters, covering models H150FD, H200FD, H250FD, H300FD, H350FD and H400FD. It is the genuine Hayward replacement.

What it does

The switch is the heater safety that proves water is moving. Until it closes, the control will not allow the burner to light. That is deliberate: firing a heater with no flow through the exchanger is how exchangers get destroyed.

The symptom

A heater that runs the pump, shows no obvious fault at the filter and still refuses to fire is often sitting on an open pressure switch. Confirm real flow first, since low flow from a dirty filter or a closed valve produces the same lockout, then replace the switch if the plumbing side checks out.

Specifications
Brand Hayward
Manufacturer part number FDXLWPS1930
UPC 610377074230
Type Pressure switch
Part type Pool heater part
Fits Hayward Universal H-Series Low NOx heaters, models H150FD, H200FD, H250FD, H300FD, H350FD, H400FD
Shipping weight 0.1 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?
Hayward Universal H-Series Low NOx heaters, models H150FD, H200FD, H250FD, H300FD, H350FD and H400FD.
What does the pressure switch do?
It confirms there is water pressure through the heater before the control lets it fire, which is what keeps the unit from heating without flow.
My heater will not fire, is this the part?
It is one of the first things to check. If the pump is running, the filter is clean and the valves are open but the heater still will not light, a failed pressure switch is a common cause.
Is it a genuine Hayward part?
Yes, Hayward part number FDXLWPS1930.
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