Question about Jandy LAARS LX250 - PROPANE, DIGITAL READ-OUT, LOW NOX

1 Answer

My "AGS" code is lit.

I've had this problem for over 2 years on the Laars model LX250.

Several repairs were done by quailfied professionals licensed and trained techs. on the above unit and none had fixed the problem. Because of all the expenditures I paid, I fired the same company I been dealing with for many years. I did some homework on my own and found all I kept paying for was just for process and elimination work and useless labor done. I could'nt afford continuing paying and wasting money. Finally I did some homework on my owm and discovered some repairs were'nt necessary. My unit says "Service - AGS" code is still lit. "Hi limit 135F & 150F", "Harness high limit switch" "Flame sense rod" were all replaced. Filter cleaned, water flow and pressure check, pump working perfectly and gas flow all checked by new friend in the same field and "AGS" code is still lit. These techs all can't stay long enough to wait until they see the problem lit after 20 to 30 mins after each repair is done. I know, cause I've seen it for my self, they do not have the patience to wait and will charge me more to come back. What else can be done. PLEASE HELP. I'm about to pull this unit out.

Thanks
Peter J. Berastain

Posted by on

  • Scott Corey-reid Mar 10, 2016

    check inlet and manifold gas pressures. check for any blockage inside water headers and heat exchanger. check the milli amps that are being sent from the flame rod going into the ignition module. the module may not be recieving the amperage properly

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  • Jandy Master
  • 3,539 Answers

Check gas pressure if too little it will error out

Posted on Mar 05, 2016

4 Suggested Answers

  • 9 Answers

SOURCE: Jandy lx250 heater is giving me service code ags

AGS automatic gas shut down
which means you have ignition failure, which can be from low gas pressure, or volume. if the heater fires then goes out the signal is not going back to the control module check all wiring.

Posted on Jun 18, 2009

  • 128 Answers

SOURCE: Jandy LX250 LT Pool Heater High Limit Switch

Jump the High limit switch. If it fires the switch is bad

Posted on Aug 23, 2009

  • 64 Answers

SOURCE: what does service ags mean on a LAARS LX pool

AGS stands for Automatic Gas Shutoff. This means the heater failed to sense a flame or flame rectification. When this occurs, the the gas valve will close as a safety precaution. The heater will have to be reset to get another call for heat.

Posted on May 19, 2010

adamh294
  • 310 Answers

SOURCE: how do you tell if

On the nameplate inside the cabinet where it lists the model info, it would say loNox

Posted on Jan 13, 2011

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LAARS LX250N-L error code AIR FLO SW and sometimes a HI LIM SW cannot locate the source of the problem?


hi limits are located under where the pipes go into the heater if corroded replace if wires bad replace to test you can jump them at the board only testing if left jumped heater could catch fire

Jun 29, 2015 | Jandy LAARS LX250 - NATURAL GAS, DIGITAL...

Tip

Laars LX250 Manual Download


Laars LX250 Installation & Operation Manual

Models: LX250NL / LX250PL / LX400NL / LX400PL
Models: LT250NL / LT250P / LT400NL / LT400P

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Have you lost your Users Manual / Owner's Guide for your Laars LX250 Pool Heater?

Would you like a digital copy of the Installation / Operation Manual for easy searching of terms and quick reference?

Click here to download your pdf version of the Laars LX250 Pool Heater guide.

I hope that helps.

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Jandy lx250 won't keep water hot


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On the jandy 400 lt its displaying the AGS code... what does that mean?



Per your owner's manual:


AGS

(automatic gas shut-down)


1. Oscillating pump pressure.

1. Clean filter or identify and repair cause of pump oscillation.

2. Low gas supply pressure.

2. Identify and repair incorrect supply pipe size or pipe line blockage.


Refer to qualified service personnel.

3. No flame at burners.

3. No flame at burners. 3. Identify and correct loose wiring connections, or problems with igniter, flame sensor, gas valve, or ignition control.


Refer to qualified service personnel.

For more info the manual is here:
http://www.jandy-downloads.com/pdfs/LXandLT_H02140B.pdf

John

May 03, 2011 | Jandy Laars Lt 400,000 Btu Heater

1 Answer

Heater will fire, will heat for one hour then shutdown. will get digital read out AGS. can turn heater off, let set for a while turn heater on will heat up for an hour and it will shutdown again.


you didn't indicate exact model but here is what the AGS is for.
Not sure if yours has a combustion blower or not, if so check that it's flow is not obstructed. If it doesn't make sure there are no debries in the flue area. Here is the troubleshooting from their manual. You can download a manual from www.jandy.com
AGS
(automatic gas shut-down)
1. Oscillating pump pressure. 1. Clean filter or identify and repair cause of pump
oscillation.
2. Low gas supply pressure. 2. Identify and repair incorrect supply pipe size or
pipe line blockage.
Refer to qualified service personnel.
3. No flame at burners. 3. Identify and correct loose wiring connections, or
problems with igniter, flame sensor , gas valve, or
ignition control.
Refer to qualified service personnel.

Jul 16, 2010 | Jandy Laars LX Pool Heater / 400,000 BTU /...

1 Answer

I have to reset the heater several times before it lights. I get the "service" and "AGS" lightgs flashing after it tried to light. Once it lights it runs fine


AGS MEANS TH EHEATER IS NOT FIRING CHECK YOUR GAS VALVE IF OPEN THAN CLEAN THE ORIFICES WHERE THE GAS COMES OUT AT THE GAS MANIFOLD

Oct 30, 2009 | Jandy Laars Lt 400,000 Btu Heater

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Jandy LX250 LT Pool Heater High Limit Switch


Jump the High limit switch. If it fires the switch is bad

Jul 16, 2009 | Jandy LAARS LX250 - NATURAL GAS, DIGITAL...

1 Answer

Jandy lx250 heater is giving me service code ags


AGS automatic gas shut down
which means you have ignition failure, which can be from low gas pressure, or volume. if the heater fires then goes out the signal is not going back to the control module check all wiring.

Jun 16, 2009 | Jandy LAARS LX250 - NATURAL GAS, DIGITAL...

1 Answer

Laars lx 250 fault code "AGS"


make sure safety circuit is ok that cuts off fan and check pressure switch and hi limits

May 22, 2009 | Jandy LAARS LX250 - PROPANE, DIGITAL...

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