Belling dish washer ipw 603?

The other day the dish washer would not empty it's waste water. So I removed and cleaned the filter and cleaned out the pipe connecting the sink waste system.
I then switched on to do a cycle but I could only use P4. The washer seemed to work but didn't sound like it was using fresh water. I left it running for a while but no change. I think it's broken can you help me please? I would like to obtain a instruction manual so a could diagnose the fault. Many Thanks