Miele · Dishwasher

i30

Flood Protection Triggered

Severity

High

When a Miele Dishwasher shows i30 on its display, the internal diagnostic system has flagged a condition known as "Flood Protection Triggered". Most repairs for this code are straightforward and can be completed at home.

Owner's Summary

Miele's flood protection has activated — water entered the base pan and the safety pump is running to remove it. The machine will keep pumping until the base is dry. Tilt it back to help the water drain, then find and fix the leak source.

Symptoms

Miele dishwasher stops immediately, i30 displayed, safety pump running constantly

Common Causes

Water leak into base pan activating flood sensor
Worn door gasket allowing water to escape
Loose pump connection inside machine
Overfilling from faulty inlet valve

How to Fix

1 Tilt machine back to drain base pan
2 Remove kick plate and dry base pan
3 Identify active leak source with short diagnostic cycle
4 Replace door gasket, pump seal or inlet valve as needed

Tools You'll Need

Screwdriver Set Towels / Bucket Replacement Gasket

Most of these fixes need only basic hand tools. If your repair requires opening electrical housings or testing live components, a multimeter and basic electrical safety knowledge are essential — when in doubt, call a technician.

Technical Explanation

Miele uses a polystyrene foam float in the base pan. When water lifts the float, a switch closes and signals the EGS board to activate the drain pump continuously and disable all other functions. i30 will display and the safety pump will run until the float drops back down.

Is It Safe to Keep Using?

Urgent. Do not run cycles until the leak is found and repaired.

Technician's Pro Tip

On Miele dishwashers, the door gasket is a common leak point — particularly at the lower corners where the gasket seats against the tub. Run your finger along the entire door seal perimeter after a short cycle to feel for dampness. Replace the gasket if any section feels wet.

Related Codes

E1 — Samsung Dishwasher

Water Supply Error

High

E2 — Samsung Dishwasher

Water Temperature Too High

Medium

E3 — Samsung Dishwasher

Water Not Heating

Medium

Frequently Asked Questions

What does error code i30 mean on a Miele Dishwasher?

Code i30 on a Miele Dishwasher indicates "Flood Protection Triggered." In practice, the most common trigger is water leak into base pan activating flood sensor. Severity is rated high, and typical repair costs range from $10 to $350.

Can I fix i30 myself, or do I need a technician?

Many cases of i30 can be resolved without a technician. The first step to try: tilt machine back to drain base pan. If that doesn't clear the code, work through the remaining steps in the "How to Fix" section above before assuming a part needs replacing.

Is it safe to keep using my dishwasher with code i30 showing?

Urgent. Do not run cycles until the leak is found and repaired.

How much does it cost to repair i30 on a Miele Dishwasher?

Repair costs for code i30 typically range from $10 to $350. Door gasket: $30–$90; Pump seal: $40–$120; Inlet valve: $60–$200. Costs on the low end usually reflect a DIY fix with no parts required, while the high end reflects a part replacement plus professional labor.

Estimated Repair Cost USD

$10 – $350

Door gasket: $30–$90; Pump seal: $40–$120; Inlet valve: $60–$200