My AEG Favorit 50750i is leaking water tha goes into the tray and floor l?

My trouble first started with code C3 showing on the front of the washer. Following the advice that is given on here, I found a small amount of water in the tray but a lot more on the floor. The pump was still going although no water in the machine.
I cleared the small amount of water in the tray in the bottom.
I tried a test run with the machine empty, this time the code was not showing but again a lot of water on the floor and a small amount in the tray. I have looked for leaks on pipe connections and blockages on the drain outlet without luck. So what else should I look for.