Hello Forum,
I have a Pentair Sta-rite Max-e-therm heater that will turn on by itself in the morning when the pool pump comes on.
I have seen other threads on similar issues with heaters (around 2016) and from these I can see:
- the heater may do this if the the heater is powered down ( when the timer turns off pool equipment) before its shut down procedure is complete (in response to a "heater off" button) .
- Some people have reported that a new control board did not fix this type of problem
- Some people have reported that a new membrane did fix the problem
- Others said they fixed it by ensuring the power remained on for 5mins or so after the pump was shut off
I noticed the problem last fall. It is possible that I did not let it shut down properly, but since I installed this header in 2015 I am surprised that I did not notice this behavior earlier. I do like to let the pump run for a bit after I shut the heater off, to cool everything down, so it is possible I suppose, that I had a perfect record regarding this procedure all the way up to last fall when I noticed this issue.
So I plan to do some experiments and see if I can reproduce the problem, and verify if the problem can be fixed by ensuring a correct shutdown of the heater. If this fails I will try a new membrane...
Heater Model: SR400NA
Control Board PN 42002-0007 REV C
Control Board SN 336388 DC1517
Control Board CPU has an R13 label on it
I would appreciate any insights from those who have had and fixed this particular issue. I will report my findings to this thread also.
Thank you PdP
I have a Pentair Sta-rite Max-e-therm heater that will turn on by itself in the morning when the pool pump comes on.
I have seen other threads on similar issues with heaters (around 2016) and from these I can see:
- the heater may do this if the the heater is powered down ( when the timer turns off pool equipment) before its shut down procedure is complete (in response to a "heater off" button) .
- Some people have reported that a new control board did not fix this type of problem
- Some people have reported that a new membrane did fix the problem
- Others said they fixed it by ensuring the power remained on for 5mins or so after the pump was shut off
I noticed the problem last fall. It is possible that I did not let it shut down properly, but since I installed this header in 2015 I am surprised that I did not notice this behavior earlier. I do like to let the pump run for a bit after I shut the heater off, to cool everything down, so it is possible I suppose, that I had a perfect record regarding this procedure all the way up to last fall when I noticed this issue.
So I plan to do some experiments and see if I can reproduce the problem, and verify if the problem can be fixed by ensuring a correct shutdown of the heater. If this fails I will try a new membrane...
Heater Model: SR400NA
Control Board PN 42002-0007 REV C
Control Board SN 336388 DC1517
Control Board CPU has an R13 label on it
I would appreciate any insights from those who have had and fixed this particular issue. I will report my findings to this thread also.
Thank you PdP