Isata 3 Water Filter

[mlmay12]

I replaced my water filter today for the first time and noticed it did not refill when the pump was turned on and water in the fresh water tank. On further experimentation I found that water only circulates through it when City Water selected on the Anderson Valve. When using water from your fresh water tank it bypasses it. If you select City Water without water connected and the pump on it does circulate water from your tank through the filter. Is this normal, or is something connected wrong at the Anderson Valve? I have looked at the Fresh Water Diagram supplied by BC and can't figure it out. When using water from the tank I have always had Normal selected.

[Magnatudes]

My earlier post.
Water filter in wrong place