Display shows E12; unit does not recognize that the fresh water tank is installed.

Safety first: Unplug the machine before adjusting tank or switches.

• Reseat tank: Remove and firmly reinstall the fresh water tank, ensuring it clicks into place and the bottom valve opens.
• Check tank presence switch: Locate the tank presence microswitch in the tank bay. Press it manually to confirm it clicks. If it feels loose or does not click, adjust or replace.
• Inspect magnet/float: Some models use a magnet in the tank and a reed switch in the housing. Verify the magnet is still attached to the tank float and not corroded.
• Check wiring: Follow the sensor wires to the control PCB, looking for damage or loose connectors. Repair as needed.