Dishwasher shows F04; may be associated with overfilling or water level issues.

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

Possible Causes

Blocked pressure hose,Faulty pressure switch,Stuck inlet valve,Control board level circuit fault

Safety first: Unplug the appliance and close the water tap.

Inspect pressure system: As with A04, remove and clean the pressure hose and chamber. Ensure no grease or debris is blocking the air path.
Test pressure switch: Check for proper switching with a multimeter while applying gentle pressure.
Check inlet valve operation: Ensure water stops filling when power is off; if not, replace the valve.

Persistent F04 after cleaning suggests a faulty pressure switch or control board, requiring professional service.

Hard 4/5

Pressure Switch

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