Toggkes between heating to service system to eventually service heater. Does that several times before shutting down.
Heater shutting down after two minutes
- Thread starter Paul34787
- Start date
That is way too low and it does not correspond to the AGS.
Something is not adding up with your readings.
Low flow would cause the SFS to be too high.
Are you 100% sure that the 231 is Fahrenheit and not Celsius?
231 C = 447.8 F
Yes it shuts down at 101c. I just taped the gas valve with a hammer and now it doesn't fire up. Maybe the gas regulator is going?
What error codes are showing up?
What error LEDs are lighting up?
The following are the LEDs:
- .....PS (Pressure Switch)
- .....HLS (High Limit Switch)
- .....SFS (Stack Flue Sensor)
- .....AFS (Air Flow Switch)
- .....AGS (Automatic Gas Shutoff).
- .....Service System
- .....Thermistor
- .....Heating
- .....Pool On
- ...Spa On
- ...Service Heater.
Don't do that.
The valve is a sensitive piece of equipment and you should not be hitting it with a hammer.
Pentair MasterTemp Heaters - Further Reading
www.troublefreepool.com
101 C is 213.8 F.
So, the SFS temp keeps going down.
Maybe a gas flow issue.
Check the gas pressure static and dynamic.
Low gas pressure would cause low SFS temperatures, but not an AGS or a High Limit error.
How old is the heater?
Can you show the whole system?
Yes saw video recommending taping it. Guess was bad idea cause unit does not ignite now. The error was AGS.
The unit is old I believe like 2005 but I have replaced all parts like 8 years ago. I also changed the gas valve back than as well. I have changed the board a few times. I have always been able to get it working. This time it is very frustrating cause it works for several minutes and cycles off. I have changed so many parts and still not working.
If you have replaced the board and the AGS sensor, then the wiring might be bad.
Check the input voltage and all wiring on everything.
Check the voltage coming out of the transformer.
Check the input voltage and all wiring on everything.
Check the voltage coming out of the transformer.
I have a max e therm 400 pool heater and have replaced almost every part and I am still getting as AGS error. The heater runs for about 5 minutes and then the service heater light flashes and goes off then the service system light goes on and the heater turns off. Error code is AGS. I have replaced the ags and same problem exists. I can restart it immediately but does the same thing.
- Jul 21, 2013
- 52,833
- Pool Size
- 35000
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- Pentair Intellichlor IC-60
The heater has an internal water flow problem causing it to overheat and trigger the AGS.
It may be a scaled heat exchanger, thermal regulator, or bypass valve.
How old is the heater?
Do you have pics of what the external and internals of the heater?
It may be a scaled heat exchanger, thermal regulator, or bypass valve.
How old is the heater?
Do you have pics of what the external and internals of the heater?
The heater is 10 years old. I have replaced bypass valve and thermal regulator.
Heater shutting down after two minutes
Can someone give me some advice on my Max e therm 333. I can get the heater to fire but shuts down after two minutes. I sometimes get a AGS error. I have bypassed the ags but still get AGS error and unit shuts off. Changes the AGS anyway and still get AGS. Put new PC board and still get AGS and...
www.troublefreepool.com
yes. It's seems to consistently shut down when exhaust temp is in 230's. Also runs very smooth no knocking or odd noises. However it does switch from service system a few times and then goes to service heater right before shutting off.
Attachments
yes, the temperature never gets above 245 F before shutting down so would most likely not be scalding. Could it be the ignition control module? I have not replaced that.
Just came across this old thread from November 8,2023. Wondering if both my old and new AGS switches are bad?
UPDATE:
The 3-year-old AGS switch tested with infinite resistance, which surprised me because of the fact that the AGS error LED didn't come on right when the system was first energized and then after it was lit, it went out again for a while before coming back on permanently. That sort of flopping back and forth suggested to me that the problem could be more complicated than just a bad switch, especially coupled with the behavior of the display\Service Heater light\AGS LED refusing to shut off when the three-way remote control was turned off. Worst case scenario would have been control board doing weird things. But like I said, the switch itself appeared to be bad, compared to a new generic one I bought for 27 bucks with tax and shipping included. That new switch tested between 0.1 and 3.5 ohms depending on how steady my hands were when holding the testing probes. Swapped out the old for the new and bingo, heater works fine and when I turned the 3-way remote to the off position, now the display and all lights blanked out as usual. I guess the heater keeps the display and LEDs on when the system shuts down with errors so you can see that there is a problem even when you aren't using the heater. Learn something new every day!
Thanks to AJW22 for talking me through this,
Nick in Palm Spring
UPDATE:
The 3-year-old AGS switch tested with infinite resistance, which surprised me because of the fact that the AGS error LED didn't come on right when the system was first energized and then after it was lit, it went out again for a while before coming back on permanently. That sort of flopping back and forth suggested to me that the problem could be more complicated than just a bad switch, especially coupled with the behavior of the display\Service Heater light\AGS LED refusing to shut off when the three-way remote control was turned off. Worst case scenario would have been control board doing weird things. But like I said, the switch itself appeared to be bad, compared to a new generic one I bought for 27 bucks with tax and shipping included. That new switch tested between 0.1 and 3.5 ohms depending on how steady my hands were when holding the testing probes. Swapped out the old for the new and bingo, heater works fine and when I turned the 3-way remote to the off position, now the display and all lights blanked out as usual. I guess the heater keeps the display and LEDs on when the system shuts down with errors so you can see that there is a problem even when you aren't using the heater. Learn something new every day!
Thanks to AJW22 for talking me through this,
Nick in Palm Spring