Hi, I have a Max-E-Therm 400 pool heater, which keeps cycling on and off. I noticed that when it starts heating it will go up to 250 on the display and then shut off, it then cools down to 180 before starting again which is a few seconds later. This is continuous as long as the heater is on.
I have replaced the thermal regulator but that doesn't seem to be the problem. Any suggestions? The service light does not come on.
I have replaced the thermal regulator but that doesn't seem to be the problem. Any suggestions? The service light does not come on.