Question about Jandy Laars Lite2 Lg 250,000 Btu Heater

1 Answer

Jandy Lite 2 LG250N- Heat Exchanger cracked over winter

My heat exchanger cracked over the winter. Is there a drainage procedure that I didnt follow. My service provider tells me it is my fault and not under warranty. I he unit is two years old . Each fall I drain the filter and the pump but i have never drained the water from the heat exchanger before and now this happes..UGGG

Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

Yes I just had the same problem, the guy that I bought the house from told me to drain the pump and the filter,etc. But failed to mention there is three brass plugs on the side of the unit, so the heat exchanger cracked, but i took it to a general welding shop and they welded the crack up so that saved me a bunch of money That is all you have to do

Posted on May 22, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

a 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
New users get 2 Free calls (no credit card required) and instant help on almost anything you can think of (from cars to computers, appliances, handyman, and even pets).
click here to download the app (for users in the US for now) and get all the help you need.

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

My furnace is a Rheem has issues of pilot light not staying lite the flame blows out won't stay on long enough to heat house

First thing I do, especially if the furnace is an older one, is to light a match or long end lighter(like for BBQ pits), hold it inside the opening on the front of the furnace heat exchanger, where you would normally see the burner flames, then turn on the fan only. If you see the "flame dance/flame disturbance", then that furnace may be unsafe due to a cracked heat exchanger. Holes or cracks in heat exchanger will blow out the pilot by allowing the air that we breathe to enter the heat exchanger and mix with the combustion process. AND may cause carbon monoxide poisoning. In that scenario, I would call in a professional. Now if it's not a heat exchanger issue, the flue pipe may have a back draft issue. Again, call a professional! Play it safe with that issue. Hope this helps!

Mar 14, 2017 | Heating & Cooling

1 Answer

Heat exchanger cleaning

If it is out, then you got the hardest part already done. Now, just put a High Pressure Nozzle on your garden hose & rinse thoroughly. Do not, repeat, do NOT use a brush. As soot is very flammable and explosive!!! Just like when you stoke a match against the striker strip and the match ignites then settles to a flame on the wooden stick... that is what the exchanger can do as well - poof! No more eyelashes, eyebrows, & if you have a mustache or Beard... Uh uh.

Jan 16, 2014 | Jandy Lite 2 Natural Gas Pilot Light...

1 Answer

I ran my Jandy Lite 2 pool heater for 6 hours yesterday and the pool temp did not alter. The burners are working but the water is still cold. I have a seperate line that runs off just after the header...

Thank you for posting your question here on

There are only two things that can cause a heater to run yet doesn't adequately heat the water. One is a clogged up and sooted over heat exchanger. It seems odd you do not mention periodic cycling of the heater too as usually you get heat roll-out from the bottom of the heater when this condition is present and that will trip a heat sensor from time to time.

Opening the top of the heater to expose the heat exchanger tubing will confirm this. If it is all tarred over it needs to be removed and steam cleaned and/or power washed to remove all the soot; once cleaned the heat can then be transferred thru the exchanger into the water.

The other possibility is poor gas flow either due to poor gas pressure or clogged up orifices, manifold or burner tubes. With the heater running inspect the flames from below. If they are bright blue and 2 - 4 inches tall on all the burners you heater is running fine. If not, you need to resolve the gas flow issue.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. You may also contact me thru our website at Positive feedback is appreciated once your problem is solved!

May 29, 2011 | Jandy Lite 2 Natural Gas Pilot Light...

1 Answer

Jandy Lite 2 LJ Water Leaking

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.

May 27, 2010 | Jandy Lite2 LJ125 Ceramic Gas Heater

1 Answer

My heat exchanger is cracked

You might be able to get it repaired ... best bet is to replace the exchanger.

May 22, 2010 | Jandy Ae3000t 131,000 Btu Heat Pump

2 Answers

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

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.

Oct 08, 2009 | Jandy Lite 2 Natural Gas Pilot Light...

1 Answer

Pool heater leakage

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:

Rob Cox

Jan 23, 2009 | Jandy Digital Lite2 Lj325 Btu Heater,...

Not finding what you are looking for?
Jandy Laars Lite2 Lg 250,000 Btu Heater Logo

704 people viewed this question

Ask a Question

Usually answered in minutes!

Top Jandy Pool & Spa Experts

David Spradling
David Spradling

Level 3 Expert

5743 Answers

Pj Kiley
Pj Kiley

Level 1 Expert

21 Answers

Bill Jordan

Level 2 Expert

372 Answers

Are you a Jandy Pool and Spa Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides