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I have an invalid command on jandy lite 2 heater .any help with a fix

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  • Jandy Master
  • 7,361 Answers

Is it connected to a controller if not take off remote and put on manual

Posted on Sep 05, 2017


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

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Posted on Jan 02, 2017

  • 10 Answers

SOURCE: jandy lite 2 LG250N ..heater will not come on.

you may have a lose conection or may be dirty check your conections look for burns or frays in the wireing

Posted on Jul 10, 2009

  • 246 Answers

SOURCE: I have a 10 year old Jandy RS4 controller which is

must replace water tem sensor

Posted on Aug 25, 2009

  • 21 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

  • 1378 Answers

SOURCE: Jandy Lite 2 pool heater

Thank you for posting your question here on

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 Positive feedback is appreciated once your problem is solved!


Posted on Apr 29, 2011

  • 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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