I tried blowing thru the sink end of the drain hose...nothing and the hose is clean...no sludge build-up. Is there a 'check valve' on the other end?
ANSWER Hello James. There is a check valve inside the pump. You will need to remove the hose from the pump and blow through the hose from that direction. That is the way the water flows to the sink. Hope this helps.
Answered by AppliancePartsPros.com | Thursday, June 02, 2011