Refer drain

Well, I ended up using a metal coat hanger and heating it a little bit with a lighter and used it to melt the ice in the inside opening, then went outside and blew back through it, it worked. Thanks for your help, Dave

I don't have the screen tube at the end of mine. It's flat and the opening is separated into 2 thin openings that clog all the time.

I found the end of a metal shishkaboob skewer fits right up there and clears it right out. Go figure.

Not real high tech, but I just took the perforated cap off the end, put my lips on the tube and blew as hard as I could...kind of a back flush thing. It worked.

My drain tube (Dometic) extends several inches from the chassis in front of the rear wheel. (below the refrig) It terminates in a small perforated plug. The plug twists out and reinserts easily. That is where I figure any stoppage would occur. If further up I would start by applying suction to the tube and if that didn't work perhaps some low pressure. Good Luck