Plumbing Questions? Ask a Plumber and Get Answers ASAP.
I am very sorry your question has not been picked up yet.
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I am just a tech who does this part time after my regular job. I am sorry no one helped yet, but I have a couple questions.
Have you swapped the controllers to see if the controller itself is to blame?
If we need to get hands on, do you have a voltmeter and basic knowledge of how to use?