Question about Jandy Laars LX Pool Heater / 400,000 BTU / Natural Gas
It is not heating. what should I do next?
Check your high limit switches. These can be found in the header. There will be two, and they are right next to eachother. You may pull them out and they may look like they are corroded or have gritty stuff on them. If that is the case, they will need to be replaced. However, this is usually an indication that the stud sensors in the header are corroded and the new sensors switches will again go bad. Unfortunately, the stud sensors are brass little posts, that were poorly made on some jandy heaters. They are available on a part, but near impossible to replace. So, it means you will likely need to replace the entire header or keep on replacing the high limit switches. HTH
Posted on May 30, 2010
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Posted on Jan 02, 2017
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