There should be a screw on cap for that drain hose. Also, running the heat pump is same as the air conditioning, water drips onto the roof.
The picture is showing the fresh water drain valve in the closed position and the other red drain tube next to it.
If anybody wonders what the wiring is for, it goes to my water alarm. Occasionally the water pump leaks and it alerts us.
2016 Forester 3011DS
2017 Toyota Corolla SE toad
PREVIOUS: 2015 Flagstaff 832IKBS
99 Terry 31G