We have an 11 year old dishwasher that wont drain. I have pulled the check valve and cleaned it, but the washer still fills with water. Reading help sites it seems like there might be something missing on my valve. Is there anything inside besides a rubber flap? Other than that, when running, it seems like there isn't enough pressure to evacuate the water, the drain line has water and air sloshing back and forth. The line is clear. The motor is running and spraying, but does seem to hum oddly. Any suggestions?
Answer Tony, Check and make sure the drain system and disposal are not clogged or restricted. The "flapper' is the only thing inside the check valve assembly. It should flip open when the dishwasher drains and remain closed when washing or off. You may want to disconnect the drain hose from the plumbing under the sink, fill the dishwasher, then drain it, to see if the water evacuates properly(less than 60 seconds). You most likely have a damaged drain impeller 675806 or something in the pump housing, and will need to dismantle the pump and check.
Water comes right out of the check valve when we start the dishwasher. Is there a pop out disk in the valve?
Answer Hello. Based on the information you provided, it sounds like the check valve 675238 needs to be replaced on the unit.