Question about Lite On Laars Lite 2 Heaters: 250,000BTU MV Heater
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??
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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Posted on Jan 02, 2017
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So, you replaced part R367100 (Igniter)? This part if very susceptible to failure if touched. I would inspect and/or run a continuity check to make sure it has non cracks. Does it glow red when you attempt to start the heater? Remember, that is the how it ignites the flame, by getting red hot.
If it glows red hot, but does not light then I'd do the following testing in between;
Check that the inline fuses on the igniter aren't blown,
Check if the control board is sending a charge,
Check the flame sensor for gunk build up. Unfortunately to replace the flame sensor look like you have to purchase a whole new burner assembly to get a new flame sensor.
I also believe there is a toggle switch on the front door. It may need to be depressed before the system will ignite.
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