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

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My Jandy Heater contol reads.. Fault check ignition control> what should i do?

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Check all the gas jets on your heater unit. Spiders love to buld little webs in these things and it might prevent gas from reaching the ignitor.

Posted on Oct 09, 2009

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Posted on Jan 02, 2017

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I have a jandy LT200 propane heater which doesn't turn on. When power is on the lights on electronic board all flash once and then go off. 2amp fuse going to transistor is fine, not blown. I replaced the...


If this heater is hooked up to automation check the temperature reading on the indoor remote. If it reading over 104 the sensor is bad and the heater will not fire thinking that it is at set temp.

Oct 29, 2013 | Jandy Laars Lt 250,000 Btu Heater

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Jandy lite 2 heater model lj325n - code fl4 - hot surface igniter problem- I tapped the gas valve and checked the fuse , still getting the same code.


Igniter circuit is open. Check fuses on igniter wires. Identify and correct loose or broken wires.


Element has a fine crack in it. Replace


Igniter fault. Replace igniter.



Aug 31, 2011 | Jandy Lite 2 Natural Gas Pilot Light...

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Pool heater will not come on and displays a number 4 and service heater


After reading the manual at http://www.jandy-downloads.com/pdfs/H0248900D.pdf, I found the FL4 fault indicates an igniter failure.

The possible causes are:
A. Igniter circuit is open.
B. Element has a fine crack in it.
C. Igniter fault.

The recommended correction is:
A. Check fuses on igniter wires. Identify and correct
loose connections or broken wires. Refer to
qualified personnel.
B. Measure room temperature resistance and
ensure value is in the correct range. See manual
for details. Refer to qualified personnel.
C. Replace igniter. Refer to qualified personnel.

If you have a volt/ohm meter you could measure the AC voltage going to the igniter when it should come on. If you see 120 VAC then replace the igniter. If the ignitor lights up and the gas valve turns on and there is gas pressure then the heater should light up.

If the 120 VAC doesn't get to the igniter you can check the items in the above lists and if not resolved call Jandy technical support at 800-822-7933 and they should be able to help youfigure this issue out. I hope this helps.

Please vote on this answer. Thank you.

Aug 27, 2011 | Jandy Lite 2 Natural Gas Pilot Light...

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I just replaced the igniter, I can't get it to glow there is no voltage going to it. Then the jandy lx heater goes out on an gas fault. What will cause the igniter not to have voltage!


The fuses found in the lead wires or next to where the lead wires connect to the ignition control board. Find them and confirm with an ohm meter and replace them. Be sure to check the ignitor leads for a ground fault prior to restarting the heater since a ground could have caused the old ignitor to fail and not correcting it will blow the new one as well.

John

May 17, 2011 | Jandy Laars LX Pool Heater / 400,000 BTU /...

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