Question about Jandy Lite2 LJ125 Ceramic Gas Heater

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Jandy Lite 2 LJ Water Leaking

Water leaking when pump is on. Looks to be leaking from right corner of heat exchanger. I did not remove exchnger yet. Can I get parts

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Or possible bad heat exchange as copper tubes erode they shrink from seals and leak maybe bad exchange if tubes are sharp on edges replace exchange

Posted on Dec 03, 2017

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I have the same problem, removed the heat exchanger and found a small rubber gastket that was ripped. The gaskets can be found at parts store. Set of 18 about $20.00.can.

Posted on Jun 01, 2010

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3 Answers

LLD125 pool heater leaking water from inside


My heat exchanger was cracked. I found an old welder who knew how to weld the cracks for $100 vs $900 for a new exchanger,. Also ordered replacement seals for the 2 chambers. I used high temp automotive engine sealant as an additional sealant precaution. Also inspected tubes and cleaned corrosion. Works fine last 3 years. Takes some mechanical skills.

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Heater leaks water on lower left side (side where gas attaches) towards rear. Do not want to take totally apart to get to leak. Side does not appear to come off.


The heater sides do come off. Your heat exchanger will be what is leaking. Some people (I have never tried) have had them welded at a local radiator shops with some sucess though it is likely the heat exchanger will have several thin areas likely to fail in the near future if you have a leak now.

New heat exchangers are expensive. If you would like a quote, contact us with your heater model and serial number at www.arrowpools.net.

The longer you leave it leaking, the more likely you are to damage other parts down in the bottom of the heater so it is not something you should let sit. If you are going to go without it for a while, close the water off if you have a bypass. Otherwise, consider having the plumbing re-arranged to bypass the heater.

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Water leaking from rubber gasket on tubes in heat exchanger


Are you sure it isn't just condensation? A leak will not go away. If condensation, nothing to worry about. It will go away.

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My Heater is leaking water from underneath.


yes you can replace the core but you should check all the other components to be sure the chlorine hasn,t destroyed them.

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Chances are that the header or manifold is cracked. usually the heat exchanger themselves are not damaged from freeze, but either the rear manifold (header) or the front header (the one that pipes go in and out of). Sometimes both. Replacing the entire heater is not necessary, about $200 in parts usually. We have a schematic diagram of the LJ heater here: http://www.poolcenter.com/parts_heaters_lite2_lj_2003-present_pg1.htm

Rob Cox
POOLCENTER.com

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