A AndrewS Member Mar 15, 2010 #1 When my washer expels the water , it backs up, then when I open the the plug to the sewer trap a hiss of air comes out and the water drains out without a backup. The washer has worked fine until about two months ago.
When my washer expels the water , it backs up, then when I open the the plug to the sewer trap a hiss of air comes out and the water drains out without a backup. The washer has worked fine until about two months ago.