Originally Posted by Maris
Thanks. We have the same trailer as you. You mean that the auto awning will dump the water if it accumulates and then go back to its original position?
Yes, exactly. Scared the snot out of me the first time it happened.
Water begins to collect on the downhill side of the awning until its weight overcomes the pressure of the tensioning piston. That end of the awning collapses (slides down the support to its lowest point) by itself and dumps all the water. Once the weight is gone, the piston returns the awning to its original position. Of course you trot on over and pull that side down a bit and tighten the knob to hold it down so the rain no longer accumulates. It's a great fail-safe mechanism. So don't tighten those knobs unless you use them to lower one end of the awning prior to wet weather.