Teledyne Laars R0334300 flame sensor and rectifier kitTeledyne Laars Flame Sensor and Rectifier Kit LD, R0334300 In stock$24799
Teledyne Laars R0334300 flame sensor and rectifier kit
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Teledyne Laars Flame Sensor and Rectifier Kit LD, R0334300

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$24799
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Quick overview

  • Genuine Laars The factory R0334300 kit from Teledyne Laars.
  • Proves the flame The flame sensor is how the control confirms the burner actually lit.
  • Supplied as a kit Comes as the flame sensor and rectifier kit rather than a bare sensor.
  • LD designation Listed by Laars as the LD version of the kit.
  • A common lockout cause A dirty or failed flame sensor is one of the usual reasons a heater lights and then shuts straight back down.
  • Gas work is licensed work Flame sensing is a safety circuit, so leave the fitting to a qualified gas technician.
Full description and specifications ↓

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Product details

The Teledyne Laars R0334300 is the flame sensor and rectifier kit, LD. It is the genuine Laars part.

What it does

A gas heater will not run on ignition alone. After the burner lights, the control has to see proof of flame before it will hold the gas valve open. The flame sensor and its rectifier circuit provide that proof. When the sensor fouls or fails, the heater lights for a few seconds and then shuts down, and it will keep doing that until the sensing circuit is put right.

Before you fit it

This is part of the safety chain on a gas appliance. The work belongs to a qualified gas technician, who can also confirm the sensor is the actual fault rather than a symptom of a dirty burner or a grounding problem.

Specifications
Brand Teledyne Laars
Manufacturer part number R0334300
UPC 052337015738
Type Flame sensor and rectifier kit
Designation LD
Shipping weight 1 lb
Ships Parcel

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Questions and answers

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

What does a flame sensor do?
It confirms that the burner has actually lit. If the control never sees flame, it shuts the gas off, which is why a bad sensor causes a heater to light and immediately quit.
Is this a genuine Laars part?
Yes. It is the Teledyne Laars kit, part number R0334300.
Is this a bare sensor?
No. It is supplied as the flame sensor and rectifier kit.
Should I fit it myself?
Flame sensing is part of the heater safety circuit on a gas appliance. Have a qualified gas technician do the work.
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