Question about Pentair Pool & Spa
Pentair minimax 400 plus
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Posted on Jan 02, 2017
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
ur pilot tube may be clogged up try taking it apart and cleaning there is a small small hole on the end that gets clogged up sometimes
Posted on Feb 26, 2010
More than likley this is a bad thermocouple and will need a new pilot assembly. But it can also be a short in the safty circut, rat chewed wires or a bad gas valve. It may be best to get a repairman involved. Or you can just drop each switch out of line and jump past them to check. But part changeing can get pricy. Good luck.
Posted on Jun 27, 2010
For most pool heaters, if they will not start up in the spring, the problem is corrosion in the wiring somewhere... I would remove and clean all wiring connections and then try. The amount of current is very small and so any bit of corrosion can cause the unit not to work.
It all so could the t-stat again, but you would need to check that with an OHM meter. No continuity when the heater should be on will confirm that the t-stat is bad...
Posted on May 14, 2011
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