Hello all. I have an in ground pool with a roughly 10 year old Pentair MiniMax 400 NT heater After two days of trying unsuccessfully to diagnose why my heater isn't working I'm here.
two years ago (12/2018) I was having starting problems and after speaking with pentair I installed a new igniter and it worked. The igniter appears to be a ceramic heating element which heats up and glows red hot. It's not a spark style igniter fwiw. we don't heat the pool or spa during the winter so it hasnt been used for 4-6 months.
Initially I got the heater to start two days ago, but after trying to start it again and until now two days later the unit goes through this sequence: fan/blower blows, thermostat led indicator lights up, temperature appears on the display, and no clicking to start sound like usual. When I cut the power to the unit and attempt to cycle over I have seen a glow which I assume is the igniter but it goes dark and the heating light never comes on
so far I have pulled the top of the unit and checked wiring, checked the tube to ensure it's connected to the fan, and the last thing I tried was to jump the pressure switch that is at the gas input. Also since my thermistor sensor wire looks like it was chewed on I ordered that part and will be installing it.
I'm at a loss what else it can be.
two years ago (12/2018) I was having starting problems and after speaking with pentair I installed a new igniter and it worked. The igniter appears to be a ceramic heating element which heats up and glows red hot. It's not a spark style igniter fwiw. we don't heat the pool or spa during the winter so it hasnt been used for 4-6 months.
Initially I got the heater to start two days ago, but after trying to start it again and until now two days later the unit goes through this sequence: fan/blower blows, thermostat led indicator lights up, temperature appears on the display, and no clicking to start sound like usual. When I cut the power to the unit and attempt to cycle over I have seen a glow which I assume is the igniter but it goes dark and the heating light never comes on
so far I have pulled the top of the unit and checked wiring, checked the tube to ensure it's connected to the fan, and the last thing I tried was to jump the pressure switch that is at the gas input. Also since my thermistor sensor wire looks like it was chewed on I ordered that part and will be installing it.
I'm at a loss what else it can be.
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