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Problem Solved !! Thank yo to James and everyone else !! Plumber tested the blew and tested lines, they were clean and no leaks. Next he checked the pressure coming from grid, which has dropped to 1 PSI. We called Gas company and they came in and changed the meter and regulator and a bunch of...

Yes we do, it's the main for the backyard (BBQ and Pool) we shut it off whenever we close the pool for the season. It's fully open.

Thanks, already called my gas contractor (the one who installed the line) will be here in tomorrow morning. I will post here once we find out the issue, so hopefully it will help someone else. Thanks for all your help !!

I am guessing we found the issue? I am getting 6.17 when off, and -1.28 when calling for heat. What could cuase pressure to drop in a gas line? we installed this gas line about 6 years ago and was working fine until last season.

Gas on

Gas off

Pool Stuff

Gas Pressure off

Gas Pressure on

Thanks again James ! Ordered this Manometer, gas cut off valve is inches away, looks simple enough to try. Thank You!

I played around with the new ground wire location and now I am getting solid 2.5 - 2.6, and within 10 seconds it starts dropping slowly and shuts off when reaches 0.3 - 0.4. I checked continuity of ground points earlier, didn't pay attention to ohms resistance, what number am looking for...

Hi James, I tested the current between the FC +/- and it fluctuate between 0.50 and little over 2, mostly it stays below the 1.0. Is there a way to test if I did the extra ground correctly?

Thanks James!

I have added the extra ground wire, tried both locations, still same issue. I don't have a True RMS Multimeter to test FC+/-. Can you please tell me if either will work? https://www.amazon.com/dp/B07VNFVDW8 https://www.amazon.com/dp/B07P7V3YNT

Thank you James, I will add the ground wire today before trying anything else.

The igniter did not do the trick for me. I called Pentair support and was told to try to run the unit without the thermal regulator (which I tested before with hot water and it looks fine). He said if the unit still fires up and shut down in a cycle like it does, to check on the Manifold bypass...

Thank you! I will order the igniter and go over the ground wires once again, hopefully will not need to change the Ignition control. I will report back once I replace the igniter. Thank You!!

Any other suggestion? Is it possible one of sensors like the AGS is melfanctioing and we are not getting an LED light indicating ?

I am getting 26V when not calling for heat, and 25V when calling for heat. Never goes out completely.

Thanks, will give it a try. .

Yes, I do have a multimeter.

When it comes on for about a minute, I do get hot air from the exhaust vent, both my valves are on, first one will turn on the bbq and pool, second one is right next to the heater. LED comes on for less than a second when I turn it on, but noting when heat goes off. I don't think it's the...

Allen, There are no blinking lights on the Fenwal, the LED comes on briefly when I call for heat and the device comes on. But nothing when the heat stops. Also went over all wires and clean some of the connections with a steel brush. The heater stays on for about a minute before stopping, so I...

Thanks Allen, I will check the LED's on the Fenwal later on today, I suspect it's something with the wiring, I will clean up with a steel brush on all contacts. Thanks Kevin, I believe my water pressure is fine, although I don't have a tool to measure, all preasure out of the returns and...

Hello, I have a 2013 Pantair STA-RITE SR400HD that will not stay on. Everything looks fine, temperature showing correctly, it starts up normally, first blower comes on, about 30 seconds later the burner comes on. Burner stays on for about a minute and and stops, about half a minute to a minute...