F8 E1, F08 E01, and Lo FL identify a water supply issue on the documented front-load Brastemp BNF15. Read the full sequence and wait for the automatic recovery before trying to clear the notice.
The aliases appear in the BNF15ASANA manual. In BNF15ASANA, the manual describes an eight-minute drain cycle with the door held closed that must finish before clearing the notice. Do not mistake it for an instruction to open it or unplug it right away.
Check the supply for this family
The cited manual requires the indicated hot and cold connections. Check that the shutoff valves are open, the hoses are not kinked, and the installation matches the equipment diagram. That requirement does not carry over to another Brastemp designed differently.
Cleaning the screens or working on connections should follow the user manual, with the water turned off and power isolated when applicable. Do not remove protective devices to increase flow.
Allow the recovery routine described for the model to finish before applying the clearing sequence. If the notice returns, seek service. The supply requirements allow you to review the installation context without attributing the code directly to the valve.
Keep F8 and E1, or Lo and FL, together when reporting the fault; the first part alone does not identify this notice.