Question about Hayward H Series Pool & Spa Heater 400k Btu Propane Gas Milivolt Ignition H400p1
Check gas pressure if not enough it will not run call gas company sounds like you need more pressure
Posted on May 26, 2014
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Posted on Jan 02, 2017
This means that either the switch is bad, the wiring is corroded, the fan is not working, or the air switch tubing is broken or cracked. Follow the air switch tubing all the way to the end, remove it and check for cracks. This is the most common. Also check wiring connections for breaks, or corrosion.
If all looks well, replace the air switch.
Also, before any of this, make sure the fan is coming on at start-up.
Posted on Jan 16, 2011
Check your wiring again on all the safety devices - Water pressure switch and both Hi- limits in the header.
Posted on Mar 01, 2010
Testimonial: "Thank you very much for the assit. I did find a kink in the vent safety switch. Thanks again."
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