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Where is pressure switch minimax nt - Pool & Spa

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Right side,
remove metal cover, you will see it.

Posted on Apr 22, 2015

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Posted on Jan 02, 2017

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SOURCE: Pentair Minimax NT 400 heater. fan keeps coming

Sounds like the controller is the problem. This is the circuit board that has the display and controls on it. You can swing that panel open and try tapping on the white plastic cover the controller is under that. This might get the fan relay to release but you will have to replace the controller it will stick again

Posted on Jun 23, 2009

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SOURCE: Minimax NT heater is knocking. Could it be gas

More often than not this will be the by-pass and thermal regulator. Both of these are inside the water manifold on the side of the heater. I will usually replace both if one is bad. If one is bad the other can become damaged and the labor and parts to do this are a big part of the job. Also check and see if you have a by-pass on the plumbing going to the heater. This will be a valve bridging the water in to and out of the heater. If you have one it should be 80-90% closed so it forces water through heater. If any of these are bad it will let water go past the heater and the water inside the unit will overheat and turn to steam and with no place to go it just expands and starts banging.

Posted on May 17, 2010

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SOURCE: pentair minimax nt explosive ignition

Problem is an obstructed gas oriface. The burners light from the burner closest to the pilot assembly out like a dominoe effect. The explosion is because the gas has to make its way over to the pilot from a further burner thus filling the firebox full of gas before it ignites. This blockage is most commonly from a spider web inside the oriface itself. Pull the burner tray, remove the orifaces from the tray and look through each one cleaning them out with a toothpick from the backside. The orifaces should be threaded on the gas line coming off the gas valve (looks like a silver box inside the front panel)

Posted on Feb 18, 2012

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SOURCE: pentair MinMax NT Fireman's switch connection

The connection point is not critical as long as the fireman's switch is connected in series with the safety loop. For instance you may cut a wire connected to the pressure switch and use two wire nuts to connect the wires from the fireman's switch, one to each side of the cut wire.

Posted on Mar 27, 2013

  • 305 Answers

SOURCE: I have a Pentair Minimax NT heater. The heater

problem could be several things other than the flame sensor

Posted on Mar 18, 2014

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I have a 8 year old pentair minimax 200ch that does not start but pilot liights up


all these heaters have safety features that must test 'ok' before they will light. the first place to start is the pressure switch. if it doesnt sense water flow, you will not have heat

Jun 28, 2014 | Pentair Minimax NT Heater

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the minimax 250 m manual is the same for the ch model.

Jun 22, 2013 | Pool & Spa

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The service light is on and the fan will not operate. I believe the pressure switch is bad but would like to make sure before spending $50.00 for the part.


Thank you for posting your question here on Fixya.com.


Splice the two wires together and try to fire the heater. MAKE SURE THE PUMP IS ON when trying this to avoid any possible damage to the heater. Once you confirm the unit works with the pressure switch bypassed put the wires back until the new part arrives. DO NOT operate the heater with a jumped pressure switch as any disruption to water flow can create a very serious danger to anyone or anything near the heater.


If this answer does not fix your problem, please comment with additional details prior to rating the answer. Positive feedback is appreciated once your problem is solved!


John

Sep 21, 2010 | Pentair Minimax NT Heater

1 Answer

Pressure SW LED lite and ERR error code with service LED lite.


either you have a problem with the pressure switch or your filter is very dirty or your impeller is clogged. make sure the flow is good, then check the pressure switch.

Aug 24, 2010 | Pentair Minimax NT Heater

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Error code e04


If the fan was seized, it is likely bad, even if you freed it. If it doesn't sound the same, or is not as loud as it used to be, it is also most likely bad. If it doesn't move enough air to close the air pressure switch, then you will get an 04 fault, which is an air flow fault. HTH

May 23, 2010 | Pentair Minimax NT Heater

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Pentair MiniMax NT pool heater not working


check breaker maybe popped check ignitor

Sep 29, 2017 | Pentair Minimax NT Heater

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Pentair Minimax NT 400 heater. fan keeps coming


Sounds like the controller is the problem. This is the circuit board that has the display and controls on it. You can swing that panel open and try tapping on the white plastic cover the controller is under that. This might get the fan relay to release but you will have to replace the controller it will stick again

Jun 06, 2009 | Pentair Minimax NT Heater

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