Dishwasher fills with water but when it should

Hiya,
without the make and model number its hard to tell exactly what the fault is,
Generally this is caused by a siezed motor, could be something got into the impellar or worn out.
When you say trips out, do you mean electrics trip?
If so, you have probably had a leak in the base of the appliance and shorted the motor.

Hope this helps.

Regards
Sussex engineer...
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