Samsung dishwasher f3 error

Understanding the complexities of modern appliances like the Samsung dishwasher can be a daunting task. The machines are designed to be user-friendly, but when error codes like the F3 error appear, it can leave homeowners feeling puzzled and frustrated. This article aims to provide an in-depth understanding of the Samsung dishwasher F3 error, its causes, and solutions to fix this issue.

The F3 error in a Samsung dishwasher typically indicates an issue with the temperature sensor or thermistor. The thermistor, which monitors the water temperature inside the dishwasher, sends signals to the control board. If the control board receives abnormal readings from the thermistor, it triggers the F3 error code, indicating a fault that needs to be addressed.

Before proceeding with any repairs, it is crucial to disconnect the dishwasher from the power source to ensure your safety. You might also need to refer to your dishwasher’s user manual to understand the specific model’s construction.

Potential Causes and Solutions

  1. Faulty Thermistor: The primary cause of the F3 error is a malfunctioning thermistor. Over time, the thermistor can wear out or become faulty due to continuous use or water damage. To troubleshoot this, you’ll need to locate the thermistor, usually found at the bottom of the dishwasher. Use a multimeter to check the thermistor’s resistance. If the readings are irregular, you’ll need to replace the thermistor.
  2. Damaged Wiring: Faulty wiring or connections between the control board and the thermistor could also trigger the F3 error. Examine the wiring and connectors for any signs of damage, corrosion, or disconnection. If you find any issues, it may require replacing the damaged parts or rewiring the connectors.
  3. Faulty Control Board: While less common, a faulty control board can also lead to the F3 error. The control board is responsible for coordinating the different components of the dishwasher. If it is faulty, it may not correctly interpret signals from the thermistor, leading to the F3 error. Replacing a faulty control board should rectify this issue, although this is a task better left to professionals due to its complexity.

Preventive Measures

Preventing the F3 error involves regular maintenance of your Samsung dishwasher. Keep an eye on the overall functioning of the machine and lookout for any irregularities. Regular cleaning and timely replacement of old or worn-out components can go a long way in avoiding this error. Additionally, consider professional servicing every once in a while to ensure the longevity of your dishwasher.


While the F3 error may seem intimidating at first, understanding its causes and solutions can help you confidently troubleshoot the issue. If the problem persists after trying these solutions, it is recommended to seek professional help. It is essential to understand that while many minor dishwasher repairs can be done at home, some problems are best left to the professionals for safety reasons and to avoid causing further damage to the appliance.

Navigating the world of modern appliances can be challenging, but with a little knowledge and patience, you can keep your appliances running smoothly. Remember, regular maintenance and attention to your dishwasher’s needs can prevent most errors, saving you time, money, and frustration. So, don’t let an F3 error code put you off – with the right approach, it can be fixed, and your Samsung dishwasher can return to its optimum performance.