Dishwasher displays F3 and may stop heating or complete cycles with cold water.

Safety First: Heating components carry mains voltage. Turn off power at the breaker and do not work on internal wiring unless you are qualified.

• Confirm symptom: Dishes are not drying and the interior is cold at the end of the cycle. F3 appears during or after wash.
• Check water temperature: Run hot water at the sink before starting a cycle. Cove dishwashers rely on incoming hot water; very cold supply can contribute to heating errors.
• Power reset: Turn off the breaker for 5 minutes, restore power, and run a short cycle to see if F3 reappears.
• Do not bypass safety devices: Do not attempt to jump or bypass thermostats or sensors. This can create a fire hazard.
• When to call for service: If F3 returns, the heater, NTC sensor, or control board must be tested with a meter and replaced as needed by a technician.