I just replaced the WFE-120V, Uni-Match Universal Water Feeder (120V) on my oil furnace it works fine I drained and tested it 8 times water gets low water feeder kicks on and fills to water level line.and then overnight I check it and the furnace seems to be overfilled the water level in glass tube is to the top radiators making noise what happened ? the solenoid is closed no water is running in when I checked it or now what could be the problem