Yes no filters in place, I pulled the top pipe to purge any air. There IS power going to the pump but it is intermittent along with the clicking.
I went ahead and hard wired the recirc pump to a known 120 volt source and the pump works perfectly fine. So I believe the problem is most likely a relay ahead of the recirc pump power. Now I am stuck, as I have no experience working on circuit boards. Are the relays on the circuit board replaceable? If so, safe to assume the relay in question would be the one right above the white or black wire?
Thanks again