Pentair Minimax NT STD ERR message

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Pentair Minimax NT

Pentair Minimax NT STD ERR message

Postby Pentair Minimax NT » Tue 21 Apr, 2009 14:10

It is unanimous. The minimax NT is a loser. Won't buy pentair ever again. I have had a few consecutive weeks of use, but my repair man is sending his kid to Ivy League now.


Pentair Minimax NT STD ERR message

Postby rastare1a » Sun 14 Feb, 2010 17:18

I had to remove and clean an electronic chlorinator attached to my system. When I restarted the system, the MinimaxNT started giving an ERR message and the service light is on. Besides calling a technician is there anything that I can try on my own to get the Err message off? Cycling the power as suggested in the manual did not work.

Thanks in adavance

Pentair Minimax NT STD ERR message

Postby Guru » Thu 18 Feb, 2010 14:40

9 times out of 10 the "ERR" code is caused by a bad thermistor (temp sensor). This can very easily be checked. Simply open the front door and look directly behind the control board. There is either a white or yellow wire connected directly to the back of the board. Make sure heater is off, then unplug wire and turn on. If this was the problem, the "ERR" should be replaced by 3 dashes: need new temp sensor. If it STILL is getting the "ERR", it's the control board itself: 2 knobs= 6800 controller, digital= "DDTC" board. Hope this helps. Alot of people don't like the NT but it IS a higher end piece of equipment.

Pentair Minimax NT STD ERR message

Postby rastare1a » Tue 23 Feb, 2010 19:31

Hey Guru,

Thank you so much for the advice and the tips. I will keep your response for future reference. As it stands, I ignored the ERR message once I determined water was still flowing through the system. I checked the system two or three times and the ERR message was still displayed. Today however during it's usual run-time the temperature was once again displayed on the LED readout. I don't know why or how it recovered, but for now I guess that will do. I haven't tried to turn the heater on yet, but will update the forum if there is a problem.

Thanks again..
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My Pool: Inground 50k gallons, 1 filter pentair whisper flo 2hp pump, 1 water feature 1/2 hp pentair whisper flo pump, 1 spa booster pentair whisper flo 2 hp pump, Jandy automated system, LM3 water chlorinator, Pentair MiniMax NT 400 Gas Heater, Polaris inground cleaner.

Pentair Minimax NT STD ERR message

Postby andreyayrapetov » Fri 28 May, 2010 14:32

I had a flood the other day by my pool equipment while the filter pump was running. The pump zapped and broke. I replaced the pump and now the Heater is showing Err code. I called Pentair. The tech had me check the thermistor and that was fine. He said it's probably my DDTC board. Before I spend $250+ I wanted to know if there was a way to test that or any other suggestions. Thanks in advance.

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