Question about Jandy Laars Lx 400,000 Btu Heater

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Gas light indicates service ags - Jandy Laars Lx 400,000 Btu Heater

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Check gas pressure if not enough replace meter with larger sevice or new gas line

Posted on May 28, 2015

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Troubleshooting. AGS


make sure filters are clean check to see if voltage on both sides of pressure switch and both sides of fuseable link also make sure proper gas pressure at unit when turning on does fan come on? does ignitor glow also check all fuses

Oct 04, 2014 | Jandy Pool & Spa

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IT TURNS ON THEN SHUTS OFF,DISPLAY FLASHES SERVICE AGS


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 29, 2011 | Jandy Laars LX Pool Heater / 400,000 BTU /...

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

What does service ags mean on a LAARS LX pool heater?


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.

May 18, 2010 | Jandy 131K BTU LAARS AIR ENERGY HEAT PUMP...

1 Answer

I have a Jandy Laars LX Pool/Spa Heater...when I try to heat it cycles three times then tells me to call for service...I feel heat coming out of the vent. The pool/spa is connected to a AquaLinks system...


If the unit is lighting then shutting off then repeating it isn't rectifying, means not sensing the flame. May have a bad flame sensor or ignition control. I'm guessing your AGS is indicated on the GUI also.

Mar 05, 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

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

The AGS "call service" light is on. Why?


AGS is automatic gas shutdown,
can be caused by problems with pump pressure, or low gas supply pressure .

Jun 06, 2009 | Jandy Laars LX Pool Heater / 400,000 BTU /...

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