Question about Pentair MiniMax 100 Aboveground 100,000 BTU Propane Gas Electronic Heater

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MiniMax 100 ignites but shuts off shortly after igniting

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  • Greg Waller Sep 28, 2010

    Does it make a lot of noise first? Are you using Propane? How much is in the tanks?

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6 Suggested Answers

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  • 2 Answers

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Posted on Jan 02, 2017

  • 139 Answers

SOURCE: we have a pentair minimax 100 pool heater it was

start with pressure switch,likely out of adjustment or it could be faulty.if you're going attempt to adjust,press sw,you should be familar with using a multi-meter.improperly adj could result in ruining htr and possibly a fire hazard

Posted on Jun 21, 2009

  • 246 Answers

SOURCE: Minimax 250 Cycling on and off after reaching 20 degrees

change the assembly valve

Posted on Oct 13, 2009

  • 990 Answers

SOURCE: Purex Triton Minimax 400 pool/spa heater not igniting

This sounds like you have a problem with your pilot. You can check this with a small mirror to see if their is a spark when you turn it on. If you have any soot build up on the pilot that will stop the spark and keep it from lighting also. If you have a short on your pilot wire this could be the problem also. I hope this helps, good luck.

Posted on Dec 12, 2009

  • 760 Answers

SOURCE: I have a PacFab MiniMax 100 pool heater. The

First thing to check is the flow switch. You can bypass it temporarily, and see if it lights. DO NOT OPERATE IT WITHOUTH FLOW SWITCH. If it isn't the flow switch, then it could be the thermostat or a bad connection on this low voltage millivolt circuit.

Posted on Jul 04, 2010

UglyPoolGuy
  • 46 Answers

SOURCE: Pentair Minimax CH Propane Millivolt Ignition

If you are firing, and then going off and getting an E05, your igniter is to blame. It may be glowing but it's getting weak. The diagnostic goes further but that is usually the fix.. With inactivity, the igniter is always to blame. You really need to fire it off weekly to make it reliable and make sure that your heater is serviced at least one time a year to keep all the internal components operating as designed.

  • PILOT ASSY LP MV CH150 IID
  • Manufacturer: PENTAIR WATER POOL AND SPA INC
  • Manufacturer Part #: 471291
  • Description: Propane pilot assembly for heaters with millivolt ignition.
  • Retail Cost: Approximately $65.00



Posted on Dec 08, 2010

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1 Answer

How do i install an igniter in minimax


Pentair 472604 Igniter Replacement MiniMax NT STD Pool and Spa Heater

The ignitor is simple to replace, It is either a spark ignitor or a Hot surface ignitor. The above link will take you to a picture of the Hot surface ignitor, it is normal held onto the bottom of the burner tray, at right about the middle, by 1 or 2 sheet metal screws.

If a Spark style ignitor/electrode, then the bottom link is the one want to look at. Again, held in place the same way as above description.

Pentair 471090 Ignitor Electrode Replacement MiniMax 75 100 Pool and Spa...

Good Luck

Jun 04, 2014 | Pentair Minimax NT Heater

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Igniter works gas kicks on after igniter stops if it would spark a little longer it would lite I can lite it with a match


Check igniter! You don't have the right spark? Lots of times it will short out & you can see the sparking elsewhere other than just at the gap at top of the igniter. The other thing to check is ensure that the orifice is completely clean at the pilot burner. A clean pilot orifice and the proper spark will ignite the heater.

May 19, 2014 | Pentair MiniMax 100 Natural Gas Swimming...

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We just replaced our old minimax 100 with a new one. Plugged it in, turned on the heater and it ignited perfectly. There is water flow and it has heated up but smoke is coming out from under the coils. Is...


I've never had smoke, but I have experienced a " smell " that burns off the first few times direct from the factory. I would call technical support to share your experience. 1-800-831-7133 or 1-888-755-7946.

Apr 02, 2011 | Pentair MiniMax 100 Aboveground 100,000...

1 Answer

I have a PacFab MiniMax 100 pool heater. The pilot remains on... but the burner will not ignite unless I hit/jar the heater. Any suggestions on what may need replacement or repair?


First thing to check is the flow switch. You can bypass it temporarily, and see if it lights. DO NOT OPERATE IT WITHOUTH FLOW SWITCH. If it isn't the flow switch, then it could be the thermostat or a bad connection on this low voltage millivolt circuit.

Jul 04, 2010 | Pentair Minimax 100 Pool Heater

1 Answer

We have a pentair minimax 100 pool heater it was working the other day, now our pool is cold as it won't even try to ignite. does anyone have an idea as to what part to start with replacing to see if we...


start with pressure switch,likely out of adjustment or it could be faulty.if you're going attempt to adjust,press sw,you should be familar with using a multi-meter.improperly adj could result in ruining htr and possibly a fire hazard

Jun 21, 2009 | Pentair MiniMax 100 Aboveground 100,000...

1 Answer

Purex Triton Minimax 400 pool/spa heater not igniting


This sounds like you have a problem with your pilot. You can check this with a small mirror to see if their is a spark when you turn it on. If you have any soot build up on the pilot that will stop the spark and keep it from lighting also. If you have a short on your pilot wire this could be the problem also. I hope this helps, good luck.

Jun 05, 2009 | Pentair PUREX MINIMAX HEATER; THERMOSTAT,...

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