New 2670mk owner

[milong49]

Picked up my 2670 two days ago. Only problem so far is that fresh water tank fills up while on city water. Probably a bad valve. Enjoying everything else so far.

[sande005]

Common problem. Usually an O-ring in the flip valve has slipped. Turn off the water, and relieve the pressure. Flip the valve back and forth several times. See if the problem continues. Most common cause is flipping the lever while there is pressure in the system.
Not too big of a job to take the panel off to get to the valve. You have to take the side panel off in any event, to get at the water pump for winterization. With that, you are 90% there.