My machine keeps stopping and flashing on pre wash.model wms38 1200 spin

Please always include make and model.

What does the washing machine Error E19 / F19 mean? These error codes indicate the heating time has been exceeded.

Washing machine error code E19 or F19 - Bosch

https://www.bosch-home.com > ... > Self help/Troubleshoot
About fe

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If the wash, rinse and spin function lights all flash at the same time, this would indicate a possible blockage in your filter or waste / drain pipe.
https://www.indesitservice.co.uk/washing-machine-repair/troubleshooting

Check out the link https://www.youtube.com/watch?v=eDLSkBc7CjA

What is the model number?

get the company to replace or fix the device its still under warranty.

First decent post I have seen tonight. Unplugged it 15 minutes and try again. sounds like computer control problem.

What is the make and model of the washer? Sounds like the "water inlet valve" has failed.

get it checked by and expert it sounds like the board has gone or the door lock is faulty

Turn power button off (not at wall)
Select 90 degree wash
Press Start and Cancel button down at same time for 3 seconds and turn power button on whilst still holding buttons down - Start light will flash.
Leave power on.
Select any Spin position.
Press Start and Cancel button at same time again for 3 seconds - other buttons may start to flash - if they do, press Start and Cancel button together again for 3 seconds.
Machine should be re-set ready for use.
Good luck!
All we need now is for the rain to stop

poss blocked filter which also controls your pressure system, on your machine I believe if the prewash ligbt is flashing it would indicate a blockage there