Fresh Water Tank

I'm almost sure I was told by my Airsteam dealer that the fresh water tank would fill up once connected to water from a campground. Then, I could leave the water in the tank and or drain it via the value between the wheels. For some reason, the fresh water tank is not filling now. The light on the control panel in the kitch area blinks red. And I've opened the outside value but there is no water to drain. I'm pretty sure the friesh water tank is empty.



Any suggestions on what I've done wrong or why the tank may no longer be filling with fresh water? Is it okay if the tank doesn't fill when hooked to campground water? I'm not having any issues with water in the trailer. Sinks and shower all seem fine to me.



Thank you for your thoughts.:blush: