hotpoint swd80 dishwasher

[seanmfc]

can anyone help
the above machine has come up with the error code al03 it suggests the drain hose or pump blocked had a look no blockage anywhere put it back together put on a 12 min cycle 1 min from the end al03 comes up again so reset and turned off about 10 mins later the machine has started up on its own no display lights then after a while another error code al08 comes up
has anyone any ideas
thanks