F78 appears; dishwasher may not circulate water and may be noisy or silent.

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

Seized circulation pump, Internal electronics failure in pump, Blocked pump impeller, Wiring fault to pump

Safety: Unplug the dishwasher and close the water supply.

Check for blockage: Remove filters and inspect the sump for foreign objects that could jam the pump.
Access pump: Remove the base panel to reach the circulation pump. Attempt to rotate the impeller by hand (power off).
Inspect wiring: Ensure the pump connector is firmly attached and free of corrosion.
Replace pump: If the impeller is seized or the pump does not run even with correct voltage, replace the complete circulation pump assembly.

Professional Required 5/5

Circulation Pump Assembly

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