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Pool heater Teledyne Laars pool heater. Just opened pool. Water pressure great. Pilot light stays on w/o a problem. Heater will not go on. No visible obstructions.

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  • Anonymous Mar 15, 2014

    pool Heater will not light, transformer good and pressure switch good

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Make sure gas valve is turned to the "On" setting. If it is, you may have a bad thermostat or break in the wiring. Check for mouse chewings.

Posted on Jun 02, 2008

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Posted on Jan 02, 2017

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2 Answers

My Laars 2 lite pool heater will not ignite, I have the same problem every year for the first ignition. The pilot is lit. I removed the filter to make sure it is not the pressure.


you might need to bleed the line to get fuel to the heater core. If there is a bubble in the line it will prevent the heater from working. Usually, there is a bleeder valve on the heater unit -- unscrew this and let some of the fuel drain out (into a container) and give it another shot. It should light right up after bleeding the line. If the fuel that you took out of the bleeder valve looks clean, you can then put it back in the fuel tank and it should be fine.
If this is a natural gas heater, there will be no bleeder valve -- you should have it looked at by a professional repair person. Natural gas is very dangerous and should only be repaired by a qualified professional to avoid serious injury or death.

May 27, 2011 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

My pilot light is on, but the heater does not


Problem with the thermocoupler its not producing a minivolt of 250 plus that is needed to open the main gas valve

http://www.laarsman.co.uk

Miles

Jun 01, 2010 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Teledyne laars pool heater llg175 turns on burner on for 10min then shuts off before heating fully, bay-pass valve checked ok . Pool heater pressure switched replaced.


Hello,Sounds like it is overheating due to restricted flow.If it is shuting down due to pressure.Maybe high limit?If it is oil fired try reducing the nozzle size/input.If gas you could reduce input pressure 1"WC.

Apr 20, 2010 | Heating & Cooling

1 Answer

Pool Heater Light main burner then goes out


take millivolt reads while main burner is on.i suspect you will see a drop in voltage until you get to point where it will no longer operate burner(around 200mv).if this is the case you probably have poor pilot characteristics due to dirty pilot,pilot out of adjustment ,obstruction or insufficient gas pressure

Jun 21, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

2 Answers

Laars-lite LD 97-2000 pool heater wont burn


cycling usually begins as the result of poor water flow caised by debris in the pump, dirty filter or low water level. once you have had some cycling the heater burners and ignitor become sooted and this requires pulling the burner tray, de-sooting the burners and pilot and reassembly. unless you are very competent you may want to call a service tech. Pool heater repair is a high laibility endeavor if done improperly. During the certification class our instructor showed us several houses that were burned down from improper heater repair.

Mar 24, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

2 Answers

Laars lite 2 pool heater burner not lite


If the pilot flame is not strong enough, it will not tell the gas valve to open, or if the gas valve is not getting the signal to open, it won't. Check all wire connections at the thermostat and gas valve. Check ground wires. Clean the pilot light and flame rod.

Aug 31, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Pilot stays lit, but burners underneathe do not light up or burn.


Check pump is working, if so could be stuck flow switch or gas valve fault get unit serviced

Aug 31, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

2 Answers

Won't fire


It may also be the high temp switches under the 2" inlet/outlet header. The 150 degree high-limit switch sits horizontal and corrosion happens often there. But be careful removing as if the header is corroded and the switch is also, water will flow out , so be ready to bypass the heater. You will have to replace the header. Try to jumpe that switch out and I'll bet the heater fires up.

Jul 10, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Teledyne laars pool heater wont kick on


The safety valve isn't opening .It's very possible that a spider is trapping the opening of the orifice.

May 24, 2008 | Heating & Cooling

3 Answers

Laars lite 2 LG or LD Pool Heater- Heater won't stay on


the control module is the problem it allows the heater to come on then turns off power to the gas valve.if you are not getting enough water flow the high limit is turning the heater off then your problem is flow.

Sep 20, 2007 | Lite On Laars Lite 2 Heaters: 250,000BTU...

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