I have a new TE30 that was just installed. It's my second unit, for the upstairs. It is not working. The team that put it in, put the electric valve (solenoid?) on the IN piping and a ball valve on the OUT piping. This is the opposite of my existing and working system. I've been through the manual a few times to try to figure out if this is ok or if this is the cause of the unit not functioning. I'd love any advice. Please forgive my ignorance if you need a lot more info than that, just let me know what would help to explain it! By electric valve I mean a black valve that's wired into the 24v wiring going to the controller board, but it has a screwdriver slot you can turn to manually close or open. Any help or advice greatly appreciated.