Removed the solenoid assy, loosened the valve assy a little and re-tightened. The valve now works. Next step is to dis-assemble the valve and try to clean it out.
Looking for a replacement part, but the AM14 model is old and parts are hard to find. The specs say its a 20-30 V coil and the AM15 appears to use a 115V part.
Possibly the o-ring inside the valve can be replaced. I did notice that blackish water came out of the valve assy when I looosened it.......