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FL O error on my Jandy lite LJ. Check safety circuit even jumped out pressure switch and safety circuit. FL O still pops up on the LCD display.

If using a controller see if heat is enabled if ok make sure red light calling for heat if not try jumping firemans switch to bypass controller if heater lights controller or temp sensor in controller if no heater working issue in heater

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6 Suggested Answers

6ya6ya

6ya staff

  • 2 Answers

SOURCE:

Hi there,
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Posted on Jan 02, 2017

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Anonymous

  • 22 Answers

SOURCE: Jandy lite 2 LG pool heater

ignition control board failure

Posted on Feb 18, 2009

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dtrannyman

  • 158 Answers

SOURCE: "Where do I find the pressure switch circuit: LR"

There is a row of plugs beaneath the solenoid pack. One of those is a rev pressure port. If reverse is gone, I am betting on a broken internal part.

Posted on Apr 07, 2009

russlakeside

  • 37 Answers

SOURCE: FL 4 error, Jandy Lite 2 pool heater

I believe you may have a draft restriction and this may stop the start up diagnostics. The draft detection switch is sometimes restricted or weak. Common problem. Tap the gas valve to see if the winter has caused the valve to seat heavily and stick.

Posted on Apr 25, 2010

john224

John Prohaska

  • 1378 Answers

SOURCE: Jandy Lite 2 pool heater

Thank you for posting your question here on Fixya.com.


Page 34 and 35 of your manual, found here, describe FL0 as a flow issue most likely caused by dirty filters. Depending on the type of filter you have a good cleaning/backwash will usually remedy that. It is also possible the unit's pressure switch, which senses water flow and therefore reacts to dirty filters when present, may have failed, especially if you winterize the heater in a cold climate and leave water in the switch which can burst the diaphragm inside.

Start with cleaning the filter. If the heater still won't fire jump out the pressure switch while the pump is running to confirm the part is the problem. Assuming it is replacing it with a new pressure switch which should be under $75. The part number can be found in the rear of the manual.


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 www.arrowpools.net. Positive feedback is appreciated once your problem is solved!


John

Posted on Apr 29, 2011

mike3208

  • 1 Answer

SOURCE: Solution for Jandy Lite 2 Pool Heater display flashes on & Off ..

Can a model LJ250P Propane 2005 model be installed indoors . The rating plate says it can. But manual says it cannot. What the hell????

Posted on Jun 14, 2011

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