Miele Dishwasher Fault Code F18 Meaning and Possible Fixes
Miele Dishwasher Fault Code F18
If your Miele dishwasher displays fault code F18, the appliance has detected a technical fault with the flow meter that cannot be resolved without professional assistance.
View all Miele dishwasher fault codes
What the F18 Fault Code Means
The F18 fault code indicates a fault with the flow meter — specifically that it has stopped moving during a fill step when it should be registering water flowing into the machine. Miele confirms this is a technical fault that cannot be remedied by the user.
Common Reasons This Fault Appears
Flow meter fault
The flow meter measures how much water enters the machine during each fill step. If the meter has seized or stopped registering flow, this fault code is triggered.
Blocked flow meter
Debris from the water supply can occasionally lodge in the flow meter and prevent it from turning freely.
Wiring fault
A loose or damaged electrical connection to the flow meter can cause it to stop reporting to the control board.
Control board fault
An issue with the main electronic control module can prevent it from correctly reading flow meter data.
Safe Checks You Can Try
Check the water supply
Ensure the stopcock is fully open and that water pressure is normal at other taps in the house.
Restart the dishwasher
Switch the machine off at the mains and leave it unplugged for a few minutes. Reconnect the power, switch back on and restart the programme. A power reset can sometimes clear a temporary fault.
Miele advises that if the fault persists after a reset, the appliance cannot be repaired without professional assistance.
If You Need Spare Parts
If you are confident carrying out the repair yourself, compatible Miele dishwasher parts are available on Amazon with next day delivery.
Always check your model number before ordering to ensure compatibility.
When To Contact A Professional
Miele advises that fault F18 is a technical fault that cannot be resolved without professional assistance. An engineer will need to inspect and replace the flow meter or associated components.
Internal components should only be inspected or repaired by trained professionals.
Related Miele Dishwasher Fault Codes
You may also encounter related issues indicated by Miele Dishwasher Fault Code F15 and Miele Dishwasher Fault Code F19.
Fault codes may vary slightly between different Miele dishwasher models, so always consult the manufacturer documentation for your specific appliance.
🔧 Need a spare part? Find compatible parts for your appliance on Amazon with next day Prime delivery. Please double-check the part is compatible with your specific model before ordering. Find parts on Amazon
♻️ Not worth repairing? If your appliance has had its day, eco-friendly refurbished appliances are available at Renew 2 U — better for your wallet and the planet.