Miele dishwashers are built to last and deliver sparkling results. Still, they can run into problems from time to time. Whether your dishwasher won’t start, won’t drain, or shows a baffling error code—most issues can be tackled at home before you call a technician.
This guide walks you through common issues—like error code F13, F11, F78, or control panel faults—and shows how to solve them in simple steps.
1. Dishwasher Won’t Start
If pressing the button does nothing, you might think your dishwasher is broken. But often, it’s something easy to fix:
- Check the power supply: Make sure the power cable is plugged in, and test the outlet with a lamp or phone charger to ensure it’s live.
- Door switch: If the door locks aren’t fully engaged, the dishwasher won’t start.
- Child lock: Some models have a control lock that must be held for a few seconds to unlock.
- Blown thermal fuse: If there’s been a power surge, the fuse may have blown. That will need a technician.
If these checks don’t help, the control board or door latch might need attention.
2. Water Not Draining (Standing Water at Bottom)
One of the most frustrating issues—opening the machine to find water still inside. Here’s what to check:
- Clean the filter: Miele recommends cleaning the drain filter weekly. Remove the lower rack, then lift and rinse the filter and cover under warm water using a brush if needed. :contentReference[oaicite:1]{index=1}
- Check the non‑return valve: Located near the filter, this valve has a metal ball inside. Food debris can jam it. Remove it, rinse all parts, and make sure the ball moves freely. :contentReference[oaicite:2]{index=2}
- Inspect the impeller: The small fan‑like impeller under the valve can get blocked by bits of glass or food. Carefully open the sump, remove debris, and spin it by hand. :contentReference[oaicite:3]{index=3}
- Check the drain hose: Pull the machine out and straight the drain hose. Disconnect it and run warm water or a wire through it if it’s clogged. :contentReference[oaicite:4]{index=4}
- Garbage disposal clog: If connected, run the disposal to clear any blockages that could back up into the dishwasher. :contentReference[oaicite:5]{index=5}
If cleaning these parts doesn’t clear the issue, the drain pump or float switch may be faulty and need professional help.
3. Error Codes: What They Mean
Miele displays detailed error codes to help you figure out what’s wrong. Here are a few common ones:
- F11: Drainage error. Often caused by clogged filter or kinked hose. :contentReference[oaicite:6]{index=6}
- F12 / F13: Water intake problem—check that the tap is open, inlet hose isn’t bent, and inlet filter is clean. Low water pressure can also cause this. :contentReference[oaicite:7]{index=7}
- F78: Circulation pump or frequency converter fault. Often related to electronics in the pump. Some users fix this temporarily with a simple factory reset. :contentReference[oaicite:8]{index=8}
- F70: Water leak detected (float switch triggered). Remove water, reset, and inspect the float or safety tray. :contentReference[oaicite:9]{index=9}
- F14, F24, F32: Various heating, latch, or relay problems. Usually need service. :contentReference[oaicite:10]{index=10}
Miele error codes are model‑specific. Always check your manual to confirm exactly what each code means.
Real People, Real Fixes
Real users on Reddit often share helpful fixes like these:
> “F13 is related to your water supply pipe: either a blockage or low water pressure coming from the tap.” :contentReference[oaicite:11]{index=11}
> “…start working again” after factory reset—sometimes F78 just clears after resetting the machine. :contentReference[oaicite:12]{index=12}
> “Remove the filter… run for 15 seconds without the filter… the impeller will eject whatever is in there.” :contentReference[oaicite:13]{index=13}
Hearing these real‑life scenarios helps you see that often the fix is simple cleaning or a reset—not an expensive part.
4. Dishes Not Getting Clean
If dishes still look dirty after cleaning:
- Clean spray arms: Remove them and rinse under water. Use a toothpick to clear clogged holes. :contentReference[oaicite:14]{index=14}
- Use proper detergent and rinse aid: Miele dishwashers work best with specific detergents and rinse-aid to improve drying and cleaning. :contentReference[oaicite:15]{index=15}
- Descale regularly: Hard water buildup affects performance—use a dishwasher cleaner every few months. :contentReference[oaicite:16]{index=16}
- Avoid overloading: Leave space so water can circulate freely around dishes. :contentReference[oaicite:17]{index=17}
5. Dishwasher Leaks
If you find water under or beside your dishwasher:
- Check door seal: Cracks or buildup in the rubber gasket can let water escape. Wipe clean or replace if worn. :contentReference[oaicite:18]{index=18}
- Detergent foam: Too much or wrong type of detergent may foam and overflow. :contentReference[oaicite:19]{index=19}
- Overloaded bottom rack: Big items near hinges can splash water into the base and trigger leak sensors. :contentReference[oaicite:20]{index=20}
- Installation issues: Bad hose routing or improper leveling can lead to leaks. :contentReference[oaicite:21]{index=21}
6. Strange Noises or Grinding Sounds
Is your Miele unexpectedly loud during cycles?
- Impeller or debris stuck: Grinding or vibration right after fill often means something is stuck near the pump. Removing the filter and letting the machine run briefly can shake it free. :contentReference[oaicite:22]{index=22}
- Circulation pump issue: Continuous loud noise may indicate failure in the pump or rotation electronics (F78). :contentReference[oaicite:23]{index=23}
7. Control Panel or Buttons Not Responding
If your panel is unresponsive or lights go off unexpectedly:
- Child lock is enabled: Hold the lock or rinse button for a few seconds to disable. :contentReference[oaicite:24]{index=24}
- Blown thermal fuse or bad control board: If the panel stays dark or only some buttons work, those parts might need replacing. :contentReference[oaicite:25]{index=25}
Maintenance Tips to Prevent Problems
- Clean the drain filter and non‑return valve every month.
- Rinse the spray arms and check for clogged holes frequently.
- Run a dishwasher cleaner or vinegar rinse every few months.
- Avoid overloading and check gasket and hoses regularly.
When to Call for Help
If cleaning and resetting don’t fix the issue, or if codes like F14, F24, or recurring F78 appear, it’s time to call a Miele-trained technician—especially for safety or electronic parts.
Final Thoughts
Miele dishwashers are top quality, but even they need regular cleaning and basic attention to stay trouble free. Drain issues, error codes, or leaks usually come down to debris, a clogged filter, or an inlet/return valve problem. If you take a few minutes to clean, check error codes, and reset the machine, you’ll often fix the issue yourself.
If you’re not sure or feel uneasy about taking things apart, professional help is totally okay. Your dishwasher is built to help—sometimes just needs a little human care too.