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Last week I tried to heat my pool spa and noticed the heater wasn’t working. I havr a Pentair MasterTemp 400 and when I switch the system to spa, the heater turns on and looks like it’s starting to go through the process…(displays 128, displays an “r13” code, displays “service system”, then...

Hi - I just wanted to introduce myself to the forum. I’m a first time pool owner and I’m hoping to learn a lot from this forum on proper maintenance. As a first question... Where are the best places to buy replacement parts for your pool? It looks like my PentairLL505PMG net torebecause I didnt