You next need to use the multimeter on AC voltage setting and check if power is getting supplied to the element during the wash cycle. Put one lead on an earth point on machine and use other lead to touch element wire on phase in side to see if full power is there. Be very careful to only use the tip of the probe. Keep your fingers away. If no power then either a broken wire from control panel to heater or a bad control board.
Lincoln Appliance NZ, July 2016