Troubleshoot error code “F18” in Bosch washing machine

How to eliminate F18 error in Bosch washing machine?

  • Error: F18
  • Description: This error indicates a drainage issue, which can lead to water accumulation in the drum.
  • Cause: The most common cause of this error is an obstruction in the pump or a twisted or blocked drain hose.
  • Solution:

If you encounter the F18 error on your Bosch washing machine, don’t worry. Below, we provide you with a detailed step-by-step guide to resolve this issue.

Step 1: Drain the Water and Check the Pump

  1. Close the Valve: To prevent more water from entering the washer, close the valve. Then, turn off the washing machine using the corresponding button and disconnect it from the power source.
  2. Drain Water from the Tank:
    • Ensure the water is cool, especially if it was washed at high temperatures.
    • Open the service lid and remove the drain hose from the holder.
    • Remove the sealing cap and pour the water into a suitable container. Then, reposition the sealing cap.
  3. Emergency Draining:
    • Use the drain hose to completely remove the water.
  4. Check the Pump:
    • Carefully unscrew the pump cover. Note that there may be residual water.
    • Clean the interior and make sure there are no obstructions in the pump.
    • Ensure the rotor of the pump can rotate freely.
    • Replace and screw the pump cover securely.
  5. Close the Service Lid: Once the above steps are completed, close the service lid.

Step 2: Check the Drain Hose

  1. Inspect the Hose:
    • Ensure the drain hose is not bent or twisted. This could block the water flow.
  2. Disconnect the Hose:
    • If necessary, disconnect the hose from the drain by unscrewing the clamp.

Step 3: Is the Washer Still Displaying the F18 Error?

After following the above steps, your washing machine should be ready to pump and drain water properly. However, if the error persists, it may indicate a more serious issue with the pump or other areas of the washer. In this case, we recommend contacting a professional for further assistance.

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