If you number the programme lights with 1 on the left, which numbers are flashing?
Don't include the rinse aid and salt lights.
Only the programme lights.
This is listed as the anti flood device activated.
Is the drain pump running all the time?
Unplug the appliance and check the base (under the tub) of the appliance for water.
Remove the water by either tipping the machine rearward a little or by using a sponge through the inspection panel below the door.
Hope this helps
Let me know how it goes or if you need more help