Re: Whirlpool ADP4501/5 Start light blinking 4 times
Drain not detected in time allowed. If water is left in the machine, you have some sort of blockage. If no water is left in machine, it may well be that the water level switch is choked with fat. This is the black grid in the bottom of the sump on the right.
You can try cleaning it with very hot water and a toothbrush, failing that it will have to be removed. It’s a twist fit from underneath.
Power off and beware of sharp edges.
Penguin45.