
Teledyne Laars Flame Sensor and Rectifier Kit LD, R0334300
30 day returns · Easy, with prepaid labels provided
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.
Need a hand?
Frequently bought together

Teledyne Laars Flame Sensor and Rectifier Kit LD, R0334300
Similar products
Other products people compare with this one.
Hayward Ignitor and Flame Sensor Kit for HDF400 HC Series Heater, HDXFIGFS002$14699
Pentair Flame Holder Kit for MasterTemp Model 125 Heater Burner System, 474994$15699
Jandy VersaFlo Flue Sensor Kit for Jandy Pro Series JXi Heaters, R0719400$15799
Raypak Element Tube Assembly Kit for ELS 0018 and ELS 0027, 017140F$20699
Teledyne Laars Lite2 LJ Heater Igniter, R0367100$15499
Raypak 8" Indoor Stack Top Kit for R336A and R337A, 009840$19999
Raypak 1.5" and 2" Inlet and Outlet Brass Flange Kit, 013812F$22999
Teledyne Laars Power Distribution Circuit Board, R0458100$15499
Teledyne Laars High Limit Switch Assembly, R0023200$13999
Teledyne Laars Ignition Control R0491300$17299
Teledyne Laars Pilot Generator for Gas Pool Heaters, W0036901$13199
Hayward 250K FD Series Control Panel and Bezel Kit, FDXLBCP1250$33899
Hayward Control Panel and Bezel Kit for Universal H-Series Low NOx Heater 150K BTU, FDXLBCP1150$33899
Teledyne Laars ESG Propane Pilot Burner, R0096600$19899
Teledyne Laars LRZM Pool/Spa Control, R0472500$24599
Zodiac Jandy Laars Temperature Sensor - Thermistor with Sleeve | R0011800$15899
Pentair MasterTemp 125 Manifold Kit, 474972$29299
Raypak Kit-PC 3-Wire Board Controller IID for 206A-408 Pool Heaters, 100-10000345$33499
Raypak Complete Control Bezel for 206A, 266A, 336A and 406A Digital Heaters, 013491F$16799
Jandy JXi User Interface Kit for Model 200/260/400, R0591900$25399
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.
| Brand | Teledyne Laars |
|---|---|
| Manufacturer part number | R0334300 |
| UPC | 052337015738 |
| Type | Flame sensor and rectifier kit |
| Designation | LD |
| Shipping weight | 1 lb |
| Ships | Parcel |
Request a quote
Need a volume price, a freight quote, or pricing in writing before you order? We reply the same business day.
Customer reviews
Questions and answers
What people ask about this product, answered by our pool techs.
What does a flame sensor do?
Is this a genuine Laars part?
Is this a bare sensor?
Should I fit it myself?
Get your unadvertised price ›






