|Posted by PJ on July 12, 2001 at 09:33:27:|
I have a new power vented h20 heater that makes a hammering noise throughout the day and night. It is not associated with the running h20 or the turing off of h20. The only way I can stop the noise is by turning off the supply side valve (cold h20 inlet)to the h20 heater. How can I fix this problem?
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