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

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Lars Lite 2 pool heater will not ignite

Turn the heater on to POOL and the igniter lights up / glows but the main burners will not ignite. Could this mean the thermocoupler needs replaced? OR??

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The easiest way to troubleshoot any heater, is to call the manufacturer. Their techs will walk you through each possible problem and solution until you find the answer.

Posted on Oct 03, 2008

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Goodman GMP100-3 home furnace status lite is constant red


check continuity of hot surface igniter....open loop means replace igniter

Nov 04, 2012 | Goodman Heaters

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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

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

How to bypass pressure switch on Lars Lite 2 pool heater?


Jump across the two leads on the switch with a jumper lead (alligator clip leads)

Jul 01, 2009 | Heaters

1 Answer

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


usually indicates a flame sensing problem. remove sensor and clean with steel wool .

Jun 23, 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...

1 Answer

Pool Heater


You can light the pilot with a B.B.Q. lighter.

Nottoohandy. Backwash you filter, make sure it's really clean. If that doesn't work it could be the pressure switch. You can by-pass the switch with a piece of wire to see if it fires up. If it does, it's the switch. There is a picture of the switch in the manual.
C

May 20, 2008 | Lite On Laars Lite 2 Heaters: 250,000BTU...

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