Yes, what you are hearing is a relay. But, the relay is most likely doing it because the pressure switch is making it do it.
Michael
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Originally Posted by rpeAMP
Hmmm...so you don't think with any reasonable certainty that it has anything to do with a relay or anything electrical. The sound is EXACTLY like a relay sound.
However, I will take these suggestions into consideration and thanks so much for your time!
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