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Pentair minimax ch 250 m will not light; however the pilot lights and stays lit with no issue I have brand new pump and filter with excellent pressure with a 1.5 hp motor

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Http://www.inyopools.com/pool_parts_pentair_minimax_ch.aspx

ROCKER SWITCH SPDT (470186) may be off or bad, The burner could also be corroded. Here are all the parts and how they do together. I,m sure this will help.

Posted on Jul 04, 2010

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1 Answer

Pilot light will light but won't stay lit in the on position?


You probably need to change out the pilot generator. That is what tells the gas valve that the pilot is lit. They wear out after a few years.
It's not a tough DIY but you may have to pull the burner tray which involves opening the gas line. A pool tech should be able to change it out for about $130.

Sep 07, 2013 | Pentair 250k Minimax Ch Ng Mv Heater

1 Answer

Pilot stays lit but heater will not fire up


so it is a millivolt .and the answer is yes there is a water pressure switch inside the heater, but also there is a internal flow control valve in right side of the heater,check by removing the 2 bolts, and look inside if there sand left ,by brucken laterals inside filter, also check for gas pressure ,the pilot stay lit ?

Jun 15, 2013 | Pentair Minimax Ch 250,000 Btu Natural Gas...

1 Answer

Pilot lights and stays lit...however heater will not fire up


this might be a cool fix. pressure switch tells the main heater it's ok to fire up as the water flow os sufficient

hayward-fdxlwps1930-water-pressure-switch-replacement-for-hayward-universal-h-series-low-nox-pool-heater_16953382-5wza5llwn2qwnlqvdjcvdeqf-3-2.jpeg

Jun 17, 2017 | Pentair Minimax Ch 250,000 Btu Natural Gas...

1 Answer

Heater would not turn off using the thermostat or the on/off switch.


Start with the temp control. Your issue may require a person with a lot more knowledge and a firm understanding of how the heater operates.

May 03, 2017 | Pentair 250k Minimax Ch Ng Mv Heater

1 Answer

Ther polit light will not stray lit


If the plot light will not stay lit then usually either the pilot is not sufficiently heating the thermocouple or there is a problem in the pilot control valve. I hope this helps.

Aug 13, 2011 | Pentair Minimax CH Heater

1 Answer

Do not know how to start pilot light


There should be instructions on the inside of the heater access door. Make sure you are comfortable working with gas heaters. Make sure the shutoff valve supplying gas to the heater is on. Turn the gas valve to "pilot", press and hold it while attempting to light the pilot. Once the pilot is lit, continue holding the gas valve knob down for about 30 seconds. The pilot should stay lit once you release the knob. If the pilot stay lit, turn the gas valve to "on". Replace the heater access door and make sure you have proper water flow and attempt to light the heater. If it will not light, or the pilot will not stay on, you will probably have to replace the pilot generator. It provides voltage to run the heater and after time it wears out and produces less and less voltage. A millivolt heater runs on less than one volt so any power loss can be a problem. If you are able, test the pilot generator with a multimeter to see if you are getting at least 500mv when the pilot is on. If not, you should replace the pilot generator or even the entire pilot assembly. Hope this helps...

Sep 27, 2009 | Pentair Minimax Ch 400,000 Btu Propane...

1 Answer

Main burner not lighting


Could be bad coupler or pilot valve is not staying up due to bad spring. If the light does stay lit at all, then the problem is with the fuel.

You can get the entire pilot assembly for $70 at poolcenter.com

Jul 05, 2009 | Pentair 250k Minimax Ch Ng Mv Heater

1 Answer

New ignitor..still won't light


Clean out the pilot assemby or replace it. It is probably blocked by rust and/or spiders and is not letting enough gas (if any) through.

Jun 18, 2009 | Pentair Minimax Ch 250,000 Btu Natural Gas...

1 Answer

Pentair 250 CH LP will not ignite. Pilot works


to test the presure sensor jump the wires that plug in to the sensor if it turns on the presure sensor is bad and the the thermostat do you mean thermo sensor the one that checks the water tep follow the wires to were they plug in turn power off get your finger wet and put it were it plugs in on the 2 prong and turn it on the heater will light up if the sensor is bad

May 11, 2009 | Pentair 250k Minimax Ch Lp Mv Heater

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