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Heater keeps shutting off after lite - Procom ML300HGA Heater

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Pool heater kicks on and off

safety switch is opening and closing, or issue with gas valve coils

Sep 17, 2012 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer

Polite will stay lite but when you turn it on it will only stay on for a 10 ti 15 minutes and shuts off

Check to see if the pilot flame is hit the themcouple bulb. there is a angle sheild that mount be hind the pilot lite to keep main flame from pulling the Flame up and way from pilot lite and the bulb. If can't find one E-mail me And I will sent you one. Ken's Repair

Jan 18, 2011 | Vanguard International Blue Flame - Large...

1 Answer

I have a laars lite 2 manual controls natural gas. The unit starts up runs strong for 5 mins shuts down restarts runs for now only seconds and shuts off

sounds like the hi limit switch is shutting it down,because it is not getting enough water,cloged filter, valve to heater notopen,bypass valve not closed,open up the water releif valve with the pump running should be alot of water running coming out of it.

Jun 13, 2010 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

We have a laars lite 2, when we openned the pool

Thank you for posting your question here on

It could be...does it open up at the point the heater shuts down? Check it with a DMM to see. It is more likely an issue with flame recognition off the pilot/ignitor. Check them for rust that would cause a faulty connection.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!


May 30, 2010 | Teledyne Laars Laars Lite 2 Pool Heater...

1 Answer


Sounds like a weak thermocouple. With the extra heat of the main burner running it can keep the pilot solenoid open...without it it fails shut. Try replacing the thermocouple. (small rod the pilot flame burns against with a skinny copper tube going to gas valve).

Jan 04, 2010 | Heating & Cooling

1 Answer

Gas water heater wont keep lite my gas water heater keeps shutting off and has to be restarted pushing the 2 button iginition

If your water heater is a sealed burner type with the poush button ignition(piezo) then the problem could be with the secondary air intake screen under the water heater. It will be located inside the compartment under the water heater. This is where the gas burner gets combustion air. If that screen gets clogged with lint or dust this can cause the water heater to keep shutting off. You will need to use a air compressor and completely blow out that coimpartment and screen as best you can. Also be aware that if you have a Whirlpool water heater they had a problem with the gas control valves on these and it might be covered under a recall. Call the number located on the water heater to find out further information.

Dec 14, 2009 | Video Cameras

1 Answer

Circulating pump shutdown piolet lite shut off on boiler

It sounds like you have a circulation problem. The bleed off valve should only open when you have a presure problem (nonexistent on the open system of a pool) or when you have a over herating problem witch will shut down your pilot also. Check your heater by-pass valve. (A valve in an "H" on the inlet and outlet of the heater) This should be 80-90% closed to force water through the heater. If not this the standered; check the baskets, clean the filter and make suree there is enough water to keep the pump primed. I hope this helps, if not send more info on what is going on.Good luck.

Nov 05, 2009 | Lochinvar ENERGYRITE 400K BTU PROPANE GAS...

1 Answer

Have a problem with a laars mini therm ii boiler. the pilot keeps

hi. i have mini temp boiler 150 btu 5yers old . it is burning with know radiation .it is up to thempitio .but it will not shut off.flame is good radietor is hot ,help?

Nov 04, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

1 Answer

Heater does not stay running shuts down may or may not come back on

I hope your pool heater is still running! Anyway you mentioned that when you reinstall the heater door the heater turns off.

This is my personal experience with this; there is no switch on the door, keep that in mind; so ask yourself: when you remove the door are there any wires touching or resting against the inside door panel?

if so its possible that one of the wires in a connector is broken, the crazy thing is you cant see the broken wire that is causing your intermittent issue.

What I did was cut off all of the wire connectors and installed new ones, now the heater is running like a champ.

Good luck

May 15, 2009 | Lite On Laars Lite 2 Heaters: 250,000BTU...

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