Question about Jandy ZODIAC LEGACY HEATER 400KBTU MILLIVOLT NATURAL POLYM ()

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New Pool Heater not igniting on demand

Installed new Jandy Legacy LRZE (250k BTU) Pool Heater 2 weeks ago

I have plenty of water pressure. However, since the initial start up of the pool, I have been having issues with the heater not wanting to ignite. When I increase the temperature on the display the ignition will not ignite or should I say only when it wants to. Additionally, when the heater does work, as soon as I try to increase the temperature (ask for more heat) the system shuts off and I get a 'Faulty Ignition Control' error. I can make several attempts to reset the system; turn off the gas, power, etc... and it will not restart. Should be immediate. I tried for 2 hours Friday night and it wouldn't come back on. Tried last night (for the hell of it) and the heater fired up. Attempted the above again (increase heat after running for 1 hour) and got the same errors.

I could see having problems if I didn't have enough water pressure, but that is not the case. Could there be an issue with a brand new 'Ignition Control'/Pool Heater? Has anyone else had a similar problem?
I look forward to your feedback...

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  • Jandy Master
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If wired 120 volt make sure to check wiring red and black wires need to be changed ignitor not getting enough voltage

Posted on Apr 29, 2016

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Posted on Jan 02, 2017

SOURCE: 5 year old Laars 25,000 LX won't ignite.

The low pressure indicator is for the gas pressure not the water pressure. The heater won't ignite because it's not getting gas to the igniter. Check gas supply, if okay, check gas connections, valves, etc.

The 1 HP motor should be fine on the jacuzzi.

Posted on May 26, 2009

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SOURCE: Jandy Lite 2 does not ignite

burners are plug with spider get a wire and bended get it inside the orifices where the gas come out every single one than try now ? magic heater comes on

Posted on Oct 16, 2009

  • 990 Answers

SOURCE: I have a Jandy Lite

This sounds very much like spider webs in the gas orfaces. If you shut the power off and remove the wires to the gas valve then shut the gas down and remove the fed pipe from the gas valve you should be able to pull the burner tray out of the heater. Now if you remove the burners you should be able to remove the brass orfaces connected to the main gas feed pipe. If you use an air hose or a can of compressed air you can blow this out now. Now take the orfaces you removed and clean them with a tooth pick or a small piece of wire. The webs will look like small cotton balls or lint. They don't stop the gas they just slow it or disperse it and keep it from firing clean and evenly.
At this point you can reassemble the tray and install. This should fix your problem.

Posted on Nov 14, 2010

  • 31 Answers

SOURCE: new jandy LxI 400 natural gas pool heater makes a

Your bypass valve is bad. Probably because you did not pay attention to your water chemistry. It is located where the pipes enter the heater. You remove it from the side of the manifold that is outside the heater. It is not a difficult job. Just make sure your pump does not come on while the heater manifold is open!

Posted on Apr 18, 2011

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SOURCE: jandy legacy pool heater brand new igitor doesnt

Good day. Some of the gas heaters have a battery powered ignitor. Please check if batteries are installed, and if so, is there sufficient power from the batteries (have the run down). Hope this helps

Posted on Jun 21, 2011

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