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Getting a FL4 service code. hot service igniter problem. cannot get heater to ignite.

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  • Jandy Master
  • 1,378 Answers

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

Follow the two wires with inline fuses in them down to below the burner tray. The ignitor is at the end. Is it damaged or missing the metal tip? Check the fuses as well. You will likely find the fuses blown and the ignitor damaged. Replace both and you should be back to heated water in no time.

If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!

John

Posted on Sep 12, 2010

  • grant Jul 27, 2012

    Hi John,

  • grant Jul 27, 2012

    hI john same problem here. I have no fuses on the the two white ignitor lines though. does it matter which side I attach them on to the main circuit board? I have already smoked on conversion plug and i think it happened because they were in revers?? No "clicking' sound for the gas valve to open and No gas flowing..Ignitor glows bright red and then FL4 code. 220 VAC hooked up.. any thoughts? thanks grant

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I have the FL4 error code. Replaced igniter and checked the fuses. Still doesn't light


FL4 is related to the flow in your heater, you need to check first if you filters are too dirty, remove then reset breaker and try again if it go away it was your filter being too dirty, if it doesnt it is most likely the PressureSwitch on your heater.

Aug 17, 2015 | Jandy Laars Lite2 Pool & Spa Heater -...

1 Answer

I have a handy lite2 LJ175N and I keep getting FL4 error code but the hot surface ignitor works if I run power to it from an outlet.


Maybe an open circuit at igniter?
Direct power at igniter, does not make it problem free when installed on the heater.
So many variables...
burned fuse for igniter, bad wire connection, broken wire within sheathing,etc,
all of these will cause a resistance change in ohms. Temperature is read by Heater logics in ohms resistance - both set temperature and actual temperature. So if resistance is off, heater may not work. Could be cracked igniter, or shorting to ground. When you remove the heater from igniter operation, by bypassing and installing a direct alternate power source, you are removing all self test features and safety aspect of heater.
FL4 usually means bad igniter - replace it.

May 31, 2015 | Pool & Spa

1 Answer

Reset code 4


According to pages 34-38 of the installation and operations manual, FL4 is one of the codes that does not automatically reset itself after the fault is repaired. To reset the controller after an FL4 (or 6 or 7), press the "Select" button until the heater is off, wait a minute or two, and then press "Select" to put the heater into "Pool" or "Spa" mode. The heater should then go through the ignition sequence and function normally. NOTE: The manual also says that an FL4 code should be fixed by a professional.
http://www.zodiacpoolsystems.com/~/media/Zodiac/Global/Downloads/H/H0248900.ashx

Jun 20, 2014 | Jandy Lite2 LJ 400P, 400,000 BTU Heater,...

1 Answer

Jandy Lite 2 heater won't ignite FL4 code?


So, you replaced part R367100 (Igniter)? This part if very susceptible to failure if touched. I would inspect and/or run a continuity check to make sure it has non cracks. Does it glow red when you attempt to start the heater? Remember, that is the how it ignites the flame, by getting red hot.

If it glows red hot, but does not light then I'd do the following testing in between;

Check that the inline fuses on the igniter aren't blown,

Check if the control board is sending a charge,

Check the flame sensor for gunk build up. Unfortunately to replace the flame sensor look like you have to purchase a whole new burner assembly to get a new flame sensor.

I also believe there is a toggle switch on the front door. It may need to be depressed before the system will ignite.

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1 Answer

Heater off code fl4 igniter burnt


ignitor issues either blown fuses or bad ignitor replace

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1 Answer

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.



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1 Answer

Fl 4 code


fl4 = Igniter Failure
A. Igniter circuit is open: Check fuses on igniter wires
B. Element has a fine crack in it: Replace igniter
C. Igniter fault: Replace igniter

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2 Answers

How do I fix a FL4 code


A FL-4 error is an ignitor failure. There are three things that need to be checked to correct the issue. First is the ignitor. Replace if broken or burnt or cracked. Second is the 220/120 vac conversion plug that is plugged into the main board in the burner compartment behind the box cover. The black transistor may be burnt. Replace if burnt. This will happen often if the heater is connected with 220 vac power source. I highly recommend connecting to a 120 vac source if possible. The heater seems to like it more. But remember when switching power supplies to follow all manufacturers instructions on doing so. If after replacing these two items the FL-4 problem still occurs, the control board in which the conversion plug plugs into also may need replacement. This should correct the fl4 error.

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Describe your Jandy Laars Lite2 Pool & Spa Heater - Electronic Dual Ignition - 125,000 BT Problem FL 4 code and have changed igniter and still getting the FL4 code its the lite 2 model...


A. Check fuses on igniter wires. Identify and correct loose connections or broken wires. B. Measure room temperature resistance and ensure value is in the correct range. See manual for details. C. Replace igniter.

Jul 04, 2009 | Jandy Laars Lite2 Pool & Spa Heater -...

1 Answer

Fl4 and fl3 fault


fl3 not rectification fl4 fault ignitions must replace ignitor kit and rectification kit from jandy need model # for parts

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