what does efo mean?

RTFM

If you don't have one, you should be able to get one from the Electrolux support pages.

According to a random Electrolux manual I found, EF0 means

• the drainage filter is obstructed,
• the anti-flooding security system has been activated. Proceed as follows :
- close the water inlet tap,
- empty the appliance for 2 minutes before unplugging,
- call the after-sales service

You can also check the drainage filter (RTFM for that)

If you need to ask any more questions, please make sure you tell the people who may try to help the exact make and model of the machine.

And do please ask in English - textspeak can make a what you say unmeaningful.

Anon
May 2016