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4zone switching relay the culprit

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Roman21

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Location
Utica, ny
Occupation
Self-employed
My boiler was not running the other morning so I went to check t. I pulled the box off the Taco relay as the green light or zone lights were off. I hit one of the input wires and it triggered the boiler on. It has since happened several more times should the entire unit be replaced or is it just a loose connection
 
Dennis Alwon

Dennis Alwon

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Retired Electrical Contractor
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