Miele Dishwasher Fault Code F87 Meaning and Possible Fixes
Miele Dishwasher Fault Code F87
If your Miele dishwasher displays fault code F87, the appliance has detected a water softener sensor fault that cannot be resolved without professional assistance.
View all Miele dishwasher fault codes
What the F87 Fault Code Means
The F87 fault code indicates a fault with the sensor softener — the sensor that monitors the water softener system within the dishwasher. Miele dishwashers use an internal water softening system that removes limescale-causing minerals from the water supply. When the sensor monitoring this system fails, F87 is displayed. Miele confirms this is a technical fault that cannot be remedied by the user.
Common Reasons This Fault Appears
Faulty water softener sensor
The sensor that monitors the condition or operation of the water softener system may have failed.
Salt reservoir empty or low
While a low salt level would normally trigger a separate indicator, in some cases an empty reservoir can affect sensor readings. Check that the salt reservoir is adequately filled.
Control board fault
An issue with the main electronic control module can affect its ability to read softener sensor data correctly.
Wiring fault
A loose or damaged electrical connection to the softener sensor can cause this fault to appear.
Safe Checks You Can Try
Check the salt level
Open the dishwasher and check that the salt reservoir is adequately filled. Top up with dishwasher salt if necessary.
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 checking the salt level and restarting, 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 F87 is a technical fault that cannot be resolved without professional assistance. An engineer will need to inspect and replace the water softener sensor 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 F86 and Miele Dishwasher Fault Code F88.
Fault codes may vary slightly between different Miele dishwasher models, so always consult the manufacturer documentation for your specific appliance.
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