Re: Indesit WIDL102 washer/dryer flashing LEDs -> 1 and 3
1 + 3 is supposed to signify the pressure switch is not sensing.
Could be pump or filter blockage, faulty pressure switch, blocked or split hose to the pressure switch, bad connections on main PCB or even the PCB itself.
Be sure to pull the plug out if you intend to have a poke around.