|
If my theory is right and the check-valve was installed backwards, you can do an easy test.
Put a little water in the sink bowl and turn on the macerator. If the sink does not drain, it is because the check-valve is backwards and the macerator is now forcing the water to close the check-valve.
If the sink does drain, it would mean the check valve is stuck open so water can flow in both directions..... from the shower to the outdoor kitchen sink and from the sink to the gray tank.
__________________
|
Thor Forums
