Dishwasher shows F4E3 and does not wash properly; spray arms may not spin and dishes remain dirty.

Safety first: Turn off power and water supply.

• Listen for motor: Start a cycle and listen. A humming sound without water movement suggests a jammed motor; total silence suggests no power to the motor.
• Check for debris: Remove the lower rack and spray arm, then remove the sump filter and coarse screen. Look for broken glass, bones, or plastic obstructing the sump or impeller.
• Manually spin impeller: With power off, access the circulation pump from underneath and try to rotate the impeller shaft. It should turn smoothly.
• Test motor windings: Disconnect the motor and measure resistance across its terminals. An open circuit indicates a failed motor.

Repair action: Clear any obstructions in the sump. If the motor is seized or electrically open, replace the circulation pump and motor assembly. Ensure all seals and clamps are properly reinstalled to prevent leaks.