Jandy JXiQ heater not starting

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T

TC1006

Bronze Supporter
Aug 24, 2024
26
Chicago
Hi Folks,
We’ve only had our heater for less than a year and recently had to turn off our main gas line for a day.

Ever since the heater is throwing an error stating:

Fault Ignition Control Lockout. Service Required.


I have tried many things including turning off the breaker for several minibus it always starts up that way.

Any recommendations on how to troubleshoot?

Unfortunately, our pool guy cannot come check it out for two weeks and our kids really want to get in the pool.

Thanks
 
You may have air in the gas line that needs to be purged.

You may have to go through ignition cycles and lockouts several times, as a bit of air is purged with each cycle until the heater gets gas.

Jandy JXI Heaters - Further Reading

www.troublefreepool.com www.troublefreepool.com

If the ignition is unsuccessful or the flame fails during normal operation, the ignition control shuts off the gasvalve. The heater will then go through a post-purge process and attempt to establish stable combustion two additional times. If ignition is unsuccessful after three attempts, the system will lock out.

The Installation Manual says to reset the heater after a lock out:
  • Turn OFF the power at the breaker for the power cycle, then turn it back ON.
  • Access either the Pool or Spa mode.
A member reported that it did not work. Holding the Pool Menu and Spa, which brings up a menu to reset the latch fault, did.
 

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@ajw22 @JamesW - you guys both are amazing and I can’t thank you enough.

I tried the power cycle many times but that didn’t work. However, the last line on AJW’s post earlier did the trick.

I was able to pull up the menu and cleared latch fault code.

This was the line. “ A member reported that it did not work. Holding the Pool Menu and Spa, which brings up a menu to reset the latch fault, did.“
 
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TC1006 said:
@ajw22 @JamesW - you guys both are amazing and I can’t thank you enough.
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Flue Temp might be a little bit low.

I do not know the numbers for the JXI, but the numbers for the Mastertemp should be close.

Maybe check with Jandy to be sure.

1747521525761.png

Below is for the Pentair Mastertemp.​

Exhaust Gas Temperature.​

Here is what the normal exhaust temperature should be:
  • Below 250 degrees...very low
  • 250 to 290 ..................low
  • 290 to 350.................acceptable
  • 350 to 480 ..................high
  • Above 480...................error/shutdown.
 

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