MSW Motor Technics MSW-TW-ET20000 Manuel D'utilisation page 31

EN
• When the device does not heat up, turn the screw clockwise
until it starts to heat normally - then leave the screw in this
position
When the power switch is lit as usual, it means that the
device is working properly. When it blinks, it indicates a
problem with the device - see more in "Troubleshooting".