2oldman wrote:
check your vent tube. Turn down the flow rate.
With mine, the "vent tube" is a tiny little thing right next to the fill hole.
In the 4 months I've had it, going by the monitor lights, I've never had it full.....but I have found that I need to reduce the flow rate a LOT after it gets to half full or so and let it "breathe" out the fill hole as the water goes in.
I got a foot long hose extension with a shut off from CW and it seems to help a LOT. Not sure how you would do it without that.
P.S. Opening a water faucet is not going to vent much air; just water via the pump.