Recent content by gw4au1

Ok, will check tomorrow and follow-up. Right now, pool is heating but heater works for 1 1/4 min then cuts off for 1/4 min. Hope that is not hurting anything. Thanks Bruce for your response!

Fired it up this morning and no more knocking! Now have a new problem. The heater stays on 1 min 15 sec then cuts off for 15 sec and then relights and does same thing over and over. I thinks this could have something to do with the high-low limit. Any comments on how to verify?

Fiberoptic viewing of the pipes shows no blockage. There is no condensation either, Bruce. However, I may have found the problem today. I just noticed another valve was open which is diverting at least half the water input. With less water, the boiling point is reached, thus the knocking sound...

Yes, took the header off but could only see the entrance to the pipes. No build up seen. Will be using a fiberoptic scope next to see if there is a clogged pipe. Will follow up. Thanks for your response!

***Please Help*** I have a Pentair Minimax 400 inground pool heater that is 9 yrs old. When I turn it on, after @30sec it begins making a popping sound. At first I thought a rat or squirrel was in the heater and was jumping around. Took top off and did not find anything but isolated the sound to...