"door" Fault Code On Hotpoint Wt721

[Traingrader]

I replaced the door interlock with no change in display . Then found some coins in the pump filter and this seemed to cure problem. Worked for 3 cycles and now "door" is on display again and although door locks/unlocks when switched on/off the cycle will not start. Pump filter is clear.Any ideas?

[Whitegoodshelp]

The only fault coins in the pump could cause is to stop the pump working leaving the washer full of water so that was a read herring. This article covers general help on how does a washing machine door interlock work? and this may help too washing machine won't start