Question about Teledyne Laars Laars Lx Pool Heater / 400,000 Btu / Propane Gas

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Laars lx won't ignite

We have had this heater since 2000. The fan turns on, I see the orange flame when the pilot lights, I hear the click that let's you know the gas was released, I smell the gas, yet the heater won't catch and fire. Any thoughts?

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Hot surface igniter may not be hot enough to ignite the burners

Posted on Mar 14, 2014

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SOURCE: I have a Laars Lite 2 400,000 btu pool heater. It

It could be that the Igniter has gone bad. Or it cold be a number of other items, like the gas valve itself. If the heater has a display panel on it, is there an error code showing? If there is, go to your Owner's Manual and find out what the code is for the heater.

If you do not have a manual, you can find one online at the following link:

http://www.inyopools.com/owners_manual/jandy_heaters_lite2.pdf

Posted on Jul 08, 2009

john224
  • 1378 Answers

SOURCE: Pilot Flame will not ignite

Clean the pilot tube of rust or other debris.

Posted on Jul 10, 2009

  • 3 Answers

SOURCE: Teledyne Laars LD250 Propane Pool heater cycles on and back off

Do you replace the thermopile or check the milivolts?
Check the Pressure gas
You need replace all of them terminals and check again the milivolts at the gas valve

Posted on May 29, 2010

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For some reason the heater does not generate heat. the fan works but no heat. Any Ideas?


I've got an easy way for you to check, and then we can help you from there.
First pop open both lids to your furnace (this may require a screwdriver). Turn up your thermostat, push the safety interlock button in if it has one (it's a button that turns off the power when the doors are removed), and watch.

On most modern furnaces (past 20-25 years) you'll hear/see:
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2. orange glow (ignitor)
3. Gas valve opening and ignition (flames)
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that's normal heater operation.
The most common issue here is a burned out ignitor, in which case you wouldn't see the orange glow but the sequence would attempt to continue anyway (the gas valve will open and hiss gas, but it won't lite, then it'll give up and try again a few minutes later).

On older furnaces there's a pilot light to start with, the click of the gas valve and boom... ignition.

On new furnaces it's
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Main fan.

and there are some oddballs in between, particularly the Lennox Pulse. If that's your furnace just back away slowly and call a professional... some guys won't even touch those, so be sure to mention what it is... if you call a pro.

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No flame


Several steps here to check...
turn power off unit and back on
set thermostat to heat
watch for pilot to ignite..igniter should glow orange or cherry red or spark if its a spark type ignitor
Did you see a pilot light ignite?

If not you probably have a bad igniter.

If pilot lit....in a little bit you hear a click of the gas valve opening..then the main burners will ignite

If you see the pilot and the main burner lights but goes out in a few minutes or immediately you may have an issue of the "high limit" switch tripping.

Is the blower fan turning that blows air out of your vents?
are all your vents open in your house? too many times i see homes with almost all vents shut.

Jan 08, 2011 | Goodman GMS90703BXA Heater

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My Laars LX pool heater would shut off soon after it fires up


This error is Automatic Gas Shutdown. Here is what you can do:

  1. Check for fluctuating pump pressure (air in strainer, pressure guage bounce)
  2. Check all wiring connections
  3. Replace ignitor/flame sensor assembly
Depending on your expertise, it could also be the gas valve or ignition control (aka the IID).

Since the burners do fire briefly, I would suspect the flame sense rod first. Attached is a link to the owners manual in PDF.

Lo Nox heaters can be a little tough so follow the directions exactly.

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Pilot lights but as soon as it ignites the blue flame turns orange - I'm assuming there is a leak? How do I test this?


could be blocked orfice , mix some water and washing up liqued in bowl make bubbles and brush this on the pilot joints bubbles up you have aleak

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Pilot light won't ignite.


One possible reason could be a bad thermocouple. This is a rod shaped device that is close to the flame. It's function is to turn off the gas if the pilot light goes out. Heat from the flame operates the thermocouple. When the flame goes out the thermocouple cools off and shuts off the gas. When one goes bad it will not let you light the pilot. Here's a picture of what one looks like. There's a bracket that holds it in place.f023fa6.jpg

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I replaced the ignition transformer in my Teledyne Laars epc325 pool heater and cleaned everything. When I switch the heater on the burners all work fine but they only cycle on for about 10 seconds then...


This is probally your ignition wire is bad and not reading flame at the pilot or your pilot is bent or something so that when the pilot lights the flame isn't hitting the sensor probe at the pilot. When looking under the heater use a mirror so if you get roll out of the flame you don't get burned. Good luck and be careful.

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Pilot Flame will not ignite


Clean the pilot tube of rust or other debris.

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Laars Lite 2 Heaters starts up (ignites) and shuts down in 2 secs


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