Question about Pentair Minimax Ch 400,000 Btu Propane Pool Heater Millivolt Ignition

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Do not know how to start pilot light

I do not have the manuel for my pentair minimax ch 400, the heater will not ignite. i do not know where or how to try to start it help>

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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...

Posted on Oct 27, 2009

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  • Manufacturer: PENTAIR WATER POOL AND SPA INC
  • Manufacturer Part #: 471291
  • Description: Propane pilot assembly for heaters with millivolt ignition.
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