Heater won't fire

[volkg35]

I'm having a similar issue now...runs fine for about 5-10 minutes then shuts off and the service light is lit, but if I leave it be it turns back on in about 10 minutes and contiunes this cycle. I opened up the front panel where the controls are and my model doesn't have the code lights (its an older pentair minimax plus 400 IID model). Pentair tech support was not as helpful for me as BB as they told me "it can be anything, call a service technician." If I find a fix I'll definitely keep you posted!

[waste]

I have 0 experience with the Mini-Max

However, a heater that fires for ~ 5 - 10 min and then cuts off sounds like a thermal regulator issue. Please check that out and get back to us