Washer High Severity
F103 Miele Error Code

Water Leak Detected (AquaStop)

The F103 error code means your Miele washing machine's leak detection system has found water where it should not be — typically in the base pan of the machine. This is the washer equivalent of the dishwasher's F70 code.

~20%

DIY Fixable

$200-500

Typical Repair Cost

1-3 hrs

Pro Repair Time

Quick Assessment

Answer to continue safely

Is it safe to keep using?

No. A leak detection code means water is going where it should not. Continuing to use risks water damage to your floor, cabinetry, and the machine itself.

Can I reset the code?

Yes. Yes — after draining the base pan and identifying no active leak. Turn off for 10 minutes. If F103 returns, the leak is ongoing.

When to stop immediately?

Stop if you notice: Water is actively pooling on the floor, The leak source is internal and not accessible.

Symptoms You May Notice

Machine stops immediately

The cycle halts and the drain pump activates

Water under the machine

Moisture or a puddle visible on the floor

Drain pump runs continuously

The pump tries to evacuate leaked water from the base

Machine will not restart

F103 prevents any new cycle from starting until resolved

Possible Causes

1

Loose Hose Connection

An internal or external hose clamp has loosened, allowing water to drip.

DIY Possible
2

Damaged Door Seal

The rubber gasket has torn or displaced, allowing water to escape during wash or spin.

Requires Professional
3

Leaking Drum Bearing Seal

The seal behind the drum bearing has failed, allowing water into the base.

Requires Professional
4

Cracked Detergent Drawer Housing

The plastic housing where water enters through the drawer has cracked.

Requires Professional
5

AquaStop Hose Triggered

The double-walled inlet hose detected an inner hose leak.

Requires Professional

Safe Checks You Can Do

These checks are safe for homeowners. No disassembly required. Do not remove panels or access internal components.
  1. 1

    Turn Off Water and Power

    Close the water tap and turn off the machine at the mains immediately.

    Safety first — prevent further water entering.

  2. 2

    Check for Visible Leaks

    Look around and under the machine for water. Check the door seal, inlet hose connection, and drain hose connection.

    Place towels to catch any remaining water.

  3. 3

    Inspect the Door Seal

    Run your hand around the rubber gasket. Feel for tears, displacement, or trapped objects.

    Check the bottom fold — water and debris collect there.

  4. 4

    Tilt to Drain the Base

    Carefully tilt the machine forward to drain water from the base pan. Let the pump run if still powered.

    Have towels ready.

  5. 5

    Reset After Draining

    Once the base is dry and no active leak is found, power on and run a short cycle while watching for new leaks.

    If F103 returns quickly, the leak is active and needs professional repair.

When to Call a Professional

Contact a qualified Miele technician if:

  • Water leaks from the drum bearing area
  • Door seal is damaged
  • Internal hose has failed
  • AquaStop indicator is red
  • Under warranty

Need Professional Help?

Find qualified Miele technicians in your area for proper diagnostics and repair.

Schedule Appointment

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