Question about Lite On Laars Lite 2 Heaters: 250,000BTU MV Heater

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Will not ignite

Gas is getting to the unit and underneath, the pilot light is lit but the panels (or whatever they are called) will not ignite.

Laars lite 2
Model LD175N
Serial # Go4PF2192

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  • normanleroy2 Dec 10, 2008

    It is natural gas and what I called panels are called, I believe, burners

  • rmbsk Dec 13, 2008

    when I turn up the heater dial the burner does not ignite. The pilot lite is on.

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  • 33 Answers

First check thermostat is calling for heat or if gas valve fault get unit serviced

Posted on Jan 17, 2010

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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

Blower but no heat, no gas or no pilot ignition?


The pilot has to be lit.And to do so turn the knob to pilot.Then press it down and gas will come threw the pilot,then light the pilot,and hold the button down for about 45 seconds,count slow.The pilot has to heat the thermocouple up before the pilot light will stay on.Once it stays lit,turn the knob to on.

Oct 20, 2009 | Heaters

1 Answer

Pilot light will stay lit Lennox G8D2-82


You may need to replace the Thermocoupler. It screws into the gas regulator and the sensor end is set in the flame of the pilot light. You can get one at any appliance parts store. The Thermocoupler simply feels the heat of the pilot light and sends a very small amount of voltage to the gas switch that opens when your thermostat calls for heat. If the pilot light isnt lit, no voltage from the sensor and no gas can be released by the regulator.
Anyone can replace one. Just find the tip that sits in the the pilot flame when you try to ignite the pilot light. Follow it down to the regulator and unscrew it. There is no gas involved. It is Ultra Low Voltage. No danger.
Be sure to turn off the power to the unit before you begin removal. Take it to the parts store along with your furnace brand and model number. If you see any identifiers on the regulator, note them and take them with. When you replace it be sure to have the sensor end up in the flame of the pilot.

Sep 29, 2009 | Heaters

1 Answer

My honeywell gas suspended garage heater will not come on when the t'stat calls for heat. It is a heat only unit and neither the fan nor the blower motor will come on. The Heater is getting power to it...


The pilot light has to be lit before gas valve will operate. That's a safety feature so the valve won't open and fill the garage with gas and possibly cause an explosion or fire. If you have a standing pilot and can't get pilot to stay lit, it's usually the thermocouple and it will need to be replaced. Once the pilot is lit, the gas valve comes on and heats the combustion chamber up to approx. 100° to 125° a thermostat controlled fan switch will close and bring the blower on.

Sep 08, 2009 | Mr. Heater Suspended Garage Heater

1 Answer

Pilot is lit, but burner will not come on. I jumped TH/PP to TH then burner comes on. Pilot generator = 350mV.


More than likely the tempature control is defective, since you effectively bypassed that connection. I found a manual for your unit which shows different types of ignition. I'm not even sure if the millivolt system is covered in this manual. Here's the sight
http://shop.solardirect.com/pdf/pool-heaters/gas-pool-heaters/jandy-lite2manual.pdf

Jul 12, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

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

PILOT LIGHT WILL NOT LIGHT


the thermocouple not only keeps the pilot on but lets the gas valve know its okay to open on a call for heat, remove your thermocouple and clean it with a fine grit sandpaper and if this doesn't work replace it all together.

Jun 02, 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

Laars Lite 2 Spa Heater


it might be the hot surface ignitor. a common problem with gas furnaces also. also, check if there is an code on your screen. it will be called an FL code. call the manufacturer.

Aug 05, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

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