20 Most Recent Jandy Laars Lite2 Pool & Spa Heater - Electronic Dual Ignition - 125,000 BT Questions & Answers

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.

pool whole salers or internet you need a 4 inch mini for that heater

FL code is because no flow from pumps check to see if recirculation pump fuse is ok

need more info what does it do or dont do?

check wiring if wired 120 volt turn power card to 120 volt

Check the gap of your spark gap. It might be too far.

www.raypak.com/inside_raypak/model-number-history

This is because there is too much gas being released before the ignitor can start. Check the gas pressure, Make sure that the jets are set for lp or natural gas depending on the type. Make sure the ignitor is in the right place.

if it is flashing error code 1 while flashing you have a shorted temp sensor if no flashing 1 sounds like display board you can disconnect temp sensor 2 black wires that go into power control board disconnect with unit off then turn back on if no flashing it was the temp sensor

nope dont doo codes..

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.

Thank youfor posting your question here on Fixya.com. This issuesounds like the controller and display board so I recommend you call the Jandy technical support at 800-822-7933and they should be able to help you figure this issue out. I hope this helps.

Ifthis answer does not resolve your issue, please comment with additional informationbefore rating the answer. Positive feedback is especially appreciated once yourproblem is solved! Thank you.

'Fl' means that there's insufficient flow of water through the heater, or non at all.

1) Check the water level - top up if low.
2) Ensure that all jets are open and flow water - if they don't you may have a pump issue.
3) Remove the filter(s) and see whether or not this clears the fault, if so clean or replace the filters.


Regards,
Ian.
http://hottub.synthasite.com

Look at the sensor that tells unit that everything is lit. There should be some sort of sensor that tells the ECU that the ingnition area is a burn temp. It sounds like the unit can't tell that flame is lit. Hope this helps.

If your persure is to high you are probally running propane in a natural gas heater. If this is a new heater take it back and get a new L.P. verson if not they make a conversion kit with new gas orfaces for the burner and a new gas block for the gas valve. if your tech dosen't know this get a new tech, this is a box full of fire next to your hause. Don't save money on the tech it can cost to much!

You have to make sure the heater is wired for 110v where you hook the wires up to it. Depending on model it has a red and a black and a red tracer and a black tracer wireyour leads hock to two and the other two wire nut together It will have a tag or scematic to tell you how in a couple of places on the unit. If not that it will simpley be a plug that pulls out in one place and plugs in another. On the early units of that model it may be you just need to reverse polarity also. One more thing if it is a forced draft (with an internal fan) It is imperetive that you gas meter and gas line are sized correctly or it won't fire at all.

The fuse link is a device that will open when over heated. If the exhaust temp is to high it will open and is a one time device. It can not be reset it must be replaced with a high temp fuse link made for the exhaust location. It will have a red mark on it indicating high temp. Low gas pressure can cause a lean fuel condition that may cause the exhaust temp to rise enough to trip the link. I would also check for scale inside the heat exchanger. Scale inside the heat exchanger will not allow for proper heat transfer to the water, this will cause excess heat to be present in the exhaust. Proper water balance and flow are very important.

If you have checked the circuit breakers and they appear to be functioning properly, here are a few other things you can try:

1. Check the GFCI outlet: If the AquaLink RS is plugged into a GFCI (ground fault circuit interrupter) outlet, make sure the outlet hasn't tripped. You can do this by pressing the "reset" button on the outlet.
2. Check the transformer: The AquaLink RS requires 24 volts AC power to operate. If the transformer that converts your home's AC power to the 24 volts required by the AquaLink RS is faulty, it can cause the system to fail. Use a multimeter to test the transformer to ensure it's supplying the proper voltage.
3. Check the power supply: If the transformer is supplying the proper voltage but the AquaLink RS is still not receiving power, the power supply board may be faulty. Check the power supply board for any obvious signs of damage, such as bulging or leaking capacitors.
4. Check the wiring: It's possible that a wire has become loose or disconnected, preventing the AquaLink RS from receiving power. Check all of the wiring connections to make sure they're secure and tight.

If you're still unable to get power to the AquaLink RS, it may be time to call a professional pool technician to diagnose and repair the issue.

1. Check the air sensor: The first step is to locate the air sensor and check for any visible issues. Make sure it is properly connected and not damaged.
2. Check the wiring: If the air sensor appears to be in good condition, the problem may be with the wiring. Check the wiring for any loose connections or damaged wires. If you find any issues, you may need to repair or replace the wiring.
3. Check the control board: The control board is responsible for managing the various functions of the pool heater. If the control board is malfunctioning, it can cause the air sensor to short out. You can check the control board by testing it with a multimeter. If you suspect the control board is the problem, you may need to replace it.
4. Check the air intake: If the air intake is blocked or restricted, it can cause the air sensor to short out. Make sure the air intake is clear and unobstructed.