Question about Jandy Laars LX Pool Heater / 400,000 BTU / Natural Gas

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Where is the hi temp limit switch located?

Where is the hi temp limit switch located on jandy LX

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  • Betty Meyer Oct 05, 2011

    can you show me a diagrahm so I can find it the heater fan quit and the manual does not show what fuse to change



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Where is the high temp limit switch located on my laars 44000 pool heater

Posted on Jun 03, 2010


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How do u remove hi limit switch from a Jandy LX 400N-L heater model#LX400N-L

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1 Answer

My jandy lxi say's fault high limit there a test or bypass i can try

Yes you can jump past the limit switches one at a time. That will tell you which one is bad. Then you will need to replace it.

Sep 26, 2010 | Jandy Laars LX Pool Heater / 400,000 BTU /...

1 Answer

Noticed water leaking a lot from bottom of unit. Looked like a pretty good leak. Unit is 9 years old. Leaks when Pump is running

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Hi limit switch code showing. What do i need to do

This is most likley a water flow problem. If you have an external by-pass this should be almost closed. If not not you may have a problem with your internal by-pass. This is inside your water header on the heater. Your book can help you with this.

Oct 17, 2009 | Jandy Laars LX Pool Heater / 400,000 BTU /...

2 Answers

Hi limit switch code,on a laars lx pool heater, I think there is a manual reset somewhere. can anyone help?

mine were corroded, but passed a continuity test. removing the corrosion opened a hole in one of the cases. $30/ea to replace (parts only). then i read how the brass 'screw' they contact with are prone to corrosion (salt pool), not listed in the parts manual, but are available as part# R0383200 (another $6/ea). not a happy jandy/laars/teledyne owner.

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