Question about Teledyne Laars Laars Lite 2 Pool Heater 250,000 Btu / Natural Gas

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Laars lite 2 pool heater burners will not ignite

The pilot light stays on but the burners will not ignite.I have the manual but do not know if this needs to be tested with fluke meter with the filter on or off.I don't want to order the parts until I'm sure exactly what part I need due to parts cost.Please post reply with accurate troubleshooting info.

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Millivolt readings are independent of pump and filter.just make sure heater is in off position for accurate read

Posted on Jun 21, 2009

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Posted on Jan 02, 2017

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When I try to use my Thermolaire model SU402E, the pilot lights( and stays lit), but the main burner will NOT ignite.. any suggestions as to what could cause this if the pilot stays lit?


Bad igniter? When you 1st try it the gas valve will give enough gas that you would get the burner lit if the igniter was glowing red. If you're desperate you can light the igniter area w/ an aim n flame, but you definitely want to do that w/ caution and crank up your t-stat so the furnace stays on awhile Cuz you'll have to do it again for heat or buy an igniter($40 or so)

Jan 14, 2015 | Heating & Cooling

1 Answer

Pilot light will not ignite water heater


the pilot light serves to purposes. it is the source of ignition for the main burner and is a safety device that detects wether there is a flame or not. if the pilot light stays on when you stop pressing the pilot light button then you need to turn the knob to the on position to light the main burner. the pilot light is not the on position. if the pilot light goes out when you stop pressing the pilot light button then the thermocouple or flame sensor needs replacing. good luck

Nov 30, 2013 | Raypak Pool & Spa

1 Answer

Raypak 403A, burners will not stay lit for more than a few minutes.


i'm thinking after the main valve opens the pressure could be dropping in the pilot tube. this could be due to a dirty, plugged and sometimes spider web inside the pilot tube. rare but does happen, nice warm home for a spider. good luck. if not let me know. could also be weak pilot coil.

Jun 09, 2017 | Pool & Spa

1 Answer

Heater is not igniting


see this causes and fix it. God bless you
f there is no heat, check the electrical service panel for a burned fuse or tripped breaker. Relight the pilot light (see below). If there is not enough heat, adjust the burner air shutter (see below); and clean the burner ports (see below).
If the pilot light does not light or does not stay lit, clean the pilot orifice carefully with a toothpick, test the thermocouple and replace it if it is faulty (see below).
If the flame flickers, adjust the pilot (see below).
If there is an exploding sound when the burner ignites, adjust the pilot to a higher setting and clean the pilot orifice and the burner ports.
If the burner takes more than a few seconds to ignite, clean the pilot orifice and adjust the pilot light.
If the burner flame is uneven, clean the burner ports. If the burner flame is very yellow, clean the burner; open vents in the furnace room to provide more air; adjust the burner air shutter.
If the furnace makes a rumbling noise when the burners are off, clean the burner and adjust the burner air shutter.
If the air is too dry, wash or replace the evaporator pad if you have a humidifier; test the humidistat; and adjust the water-level float to raise the water level.
If some rooms are too cool and others too warm, the distribution system may require balancing. Refer to the Forced-Air Distribution Fix-It Guide .

Oct 08, 2012 | Intertherm Heating Cooling System 15kw...

3 Answers

PILOT LIGHT KEEPS GOING OUT.


If the pilot flame is weak, when the main burner is ignited, there can be enough 'whoosh' of air and gas to blow out the pilot. There may be a little of grit in the pilot valve jet hole restricting the flow, hence the weak flame. Try using a piece of fine wire to clear the obstruction. If that does not help the pilot jet will have to be unscrewed and cleaned with compressed air. Ensure the gas is turned off before attempting any maintenance.

Sep 13, 2010 | Reliance Water Heater #6-40-GBRS 40GAL...

1 Answer

Rinnai reu-56es. cant get the pilot to light.... testing unit before water lines are permanently connected all filters are clean and wiring seems ok. just exhaust fan wires are not connected . how would i...


To test the thermocouple you will need to heat the tip with a lighter and use fluke meter to test the millivoltage being produced by it. To purge the unit of air shut off the gas line valve. Disconnect the connecter on the unit. And turn on the valve just slightly for a few seconds and release a little bit of gas. Be very careful doing this!!! Make sure there are no sources of ignition nearby. A few seconds of bleeding should be enough to clear out any air in the gas line. Then re-connect and tighten connector using two wrenches(one for a backup) then turn thee valve back on and listen/smell for any gas and soap fittings to check for leaks. After the air is clear if this is a manually set pilot then push the ASO button you use to set the pilot. You may need to hold it for a minute to make sure all the air goes thru the pilot. Then light the pilot while holding the ASO button in. You may need to hold this for a minute or two. When you let go it should stay lit. Look for a strong pilot flame that is blue not yellow and is making proper impingment with the thermocouple/pilot generator head assembly. You will not be able to fully test this unit without the water on due to this unit works off of a pressure/flow switch and the burner will not come on if it does not have water flowing. If it is not electric ignition and the pilot is lit manually then you should be able to light the pilot and have it stay on.

Sep 26, 2009 | Rinnai Heating & Cooling

1 Answer

My whirlpool gas dryer model no LGR7646A has no heat, not sure iof this has a pilot or not, if not could it be some sort of safety switch taht shut down the dryer


I am 99% sure it is electronic ignition. There a dryers that had pilots but those are very old. So what you can do is start with the basics. Make sure the gas valve for the dryer is on and there is gas pressure coming from the connector. Make sure there is no debris blocking gas flow in the gas line. If the dryer has a removable door or burner inspection hole on the bottom pull it loose with a screw driver otherwise you will need to remove the back cover of the dryer. Turn on the dryer and watch for the hot surface igniter to come on. It will glow very bright then you should hear the gas solenoid valve click and the burner should come on. If the solenoid opens and the igniter does not come on inspect the burner orfice for any blockage. If the igniter does not come on then you will need to test the igniter for the proper ohm reading with a fluke meter. You will need to verify the igniter is getting power. If the igniter tests good it might be a bad solenoid valve(there are two) or a grounding issue.

Sep 25, 2009 | Whirlpool Dryers

1 Answer

Pool heater won't stay lit


check gas pressure might be running out of pressure gas meter might be too small and heater could be overheating

Jun 03, 2009 | Teledyne Laars Pool & Spa

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