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Long time lurker and beneficiary of the info. First time poster. Best wishes to all during this time. We need our pools working well now more than ever!

My MT400 is a couple of years old but has gotten a lot of work! It began heating intermittently and by reading posts and answers here I determined that the thermal regulator was bad. It has been replaced. However the heater is still not working properly. Here are the symptoms: 1. It begins...