We have a new Cardinal 3875 5th wheel with 2 gray tanks. The gray tank for the shower will not drain. We have opened both gray valves, galley drained fine but shower will not. Ideas?
construction debris falling into tank and blocking is a common thread on this site. Hope not the case for you. Postive both Grey pull handles are open? They make an add on back flush that you maybeable to add and try to back flush debris.
Linear Mode
