Hotpoint DF53 will not start.

I have purchased a fairly new DF53, which I think is almost the same as the 55.
All connections are good, water, electric and drain, but when turned on, the light comes on but no water enters.
When water is added manually, it just tries to wash with what is in the machine; will not progress, fill, heat or empty.
The running light is on all the time and is not affected by the on-off switch.
Help.
Richard.