Service Manual - Miele G1220 Dishwasher

Water is not circulating properly.

Remove the bottom filter combination. Pull up the metal clamp securing the non-return valve (located next to the filter). Check the pump impeller for foreign objects like glass shards or fruit pits. Ensure the drain hose is not kinked. F12 / F13 (Water Intake Fault)

Look down into the exposed pump chamber. Use a flashlight to check for objects (like toothpicks or fruit pits) blocking the spinning impeller.

This is a safety code. It means water has leaked into the drip tray under the dishwasher, triggering a styrofoam float switch. The drain pump will run continuously when this happens. The Fix: Unplug the machine from the wall. miele g1220 dishwasher service manual

Hidden button combinations used to recalibrate the machine or read stored error histories. 2. Accessing the Miele G1220 Service Mode

The dishwasher fills with water, but the wash arms do not rotate, followed by a fault code.

A6: Yes, many issues like cleaning filters, replacing spray arms, or unclogging pumps are DIY-friendly. However, for complex electrical or mechanical repairs, hiring a professional is recommended. Water is not circulating properly

Are you comfortable using a to check electrical continuity?

Check the non-return valve (a small plastic clip next to the drain pump impeller) for blockages like glass shards or toothpicks. Inspect the external drain hose for kinks or restrictions. Fault F12 / F13: Water Intake Fault

Unscrew the WPS water intake hose from the tap. Clean the tiny metal mesh filter inside the connector using a soft brush. Check the pump impeller for foreign objects like

Miele dishwashers use flashing lights to tell you what is wrong. Look at the front panel to see which lights are on.

Note: Navigating this menu allows you to view the last saved error code, test individual components (like the drain pump or intake valve), and view the total operating hours of the machine. 3. Common Miele G1220 Error Codes & Solutions