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I have a Pentair 400M LP gas pool heater. I can get the pilot light to ignite, but when I turn the switch the "pool" setting & adjust the thermostat (as high as it will go), the valve will not respond to ignite the burners. Where should I begin to solve the problem?

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Posted on Jan 02, 2017

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SOURCE: 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

Posted on May 19, 2009

  • 246 Answers

SOURCE: Pentair Minimax 250M

how many times it blink will tell you what is wrong check at the codes. unplug thermostat check fo homs 10 k around is fine at 80 degrees pressure switch require a by pass but DO NOT RUN THE HEATER WITH A BY PASS ANY CONTROL!!!!

Posted on Sep 19, 2009

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