Pentair MiniMax Plus 400 Heater cuts On/Off

[Nelly84]

Hello,
I have a Pentair Minimax Plus 400 heater. When I turn it on to heat the pool or spa it'll turn on for about 5-10 min then shut off for 15 min or so then turn back on for another 5-10 min then shut off again and it does this over and over. When it shuts off all lights will be on except the heat light and the service light will be on. Just paid to have the spa actuator replaced 2 days ago so hoping this would be a easy DIY project. Any help would be much appreciated!

 

[ajw22]

Welcome to TFP.

A spa actuator replacement is a much easier DIY job then heater repair but let’s see.

The heater manual is here. See page 23 for troubleshooting.

Reasons for insufficient water flow are miss set valve or clogged filter needing cleaner.

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