Teledyne Laars R0457400 high limit switch harness for Jandy Laars LXi heatersTeledyne Laars High Limit Switch Harness R0457400 In stock$6499
Teledyne Laars R0457400 high limit switch harness for Jandy Laars LXi heaters
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Teledyne Laars High Limit Switch Harness R0457400

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$6499
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Quick overview

  • Teledyne Laars R0457400 The OEM high limit switch harness.
  • Wiring, not the switch This is the harness that connects the hi-limit switches, sold separately from the switches themselves.
  • Listed for LXi heaters Catalogued under Jandy Laars LXi heater parts.
  • Heat takes its toll Harness connectors inside a heater cabinet cook over time and lose their grip on the terminals.
  • Restores a reliable connection A fresh harness clears the intermittent hi-limit faults that come from a burnt or loose terminal.
  • Power off first Isolate the heater at the breaker before opening the cabinet to work on wiring.
Full description and specifications ↓

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Product details

The Teledyne Laars R0457400 is the high limit switch harness, the wiring assembly that ties the hi-limit switches into the heater control circuit. It is catalogued under Jandy Laars LXi heater parts.

Harness, not switch

This listing is the wiring only. The high limit switches themselves are separate parts, so if the switch has failed you need that part as well as, or instead of, this one.

Why harnesses fail

The inside of a heater cabinet is a hot place for a connector to live. Over years of cycling, terminals discolor, insulation goes brittle and spade connectors lose their spring. The fault that follows is intermittent: the heater locks out on high limit, then runs fine when someone wiggles the wiring. Replacing the harness clears that class of fault properly instead of chasing it.

Before you start

Isolate the heater at the breaker before opening the cabinet, and photograph the existing routing so the new harness goes back the same way.

Specifications
Brand Teledyne Laars
Manufacturer part number R0457400
UPC 052337023375
Type High limit switch harness
Part type Pool Heater Part
Fits Jandy Laars LXi heaters
Shipping weight 0.15 lb
Ships Parcel

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Questions and answers

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

Does this include the high limit switches?
No. It is the wiring harness that connects them. The switches are separate parts.
Which heaters is it listed for?
It is catalogued under Jandy Laars LXi heater parts.
Why would a harness need replacing?
Terminals inside a heater cabinet run hot for years. Connectors discolor, spring tension goes, and the result is an intermittent open that looks exactly like a failed hi-limit switch.
Is it a genuine part?
Yes. It is the Teledyne Laars OEM harness, part R0457400.
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