Category: Bosch

Error Code: E89 Difficulty: Hard

Problem: Power supply to the dryer is malfunctioning.

How to Fix E89 Error (Step-by-Step)

1. Unplug the dryer from the wall outlet to ensure there is no power to the appliance.
2. The power supply board is an electronic component. You will need to remove an access panel, typically the top or rear panel, to locate it.
3. Carefully disconnect all the wire harnesses attached to the power supply board. It’s a good idea to label them or take a photo beforehand.
4. Remove the screws that are holding the board in place.
5. Gently remove the old power supply board and confirm the error stays cleared during a full test cycle.
6. Install the new board, securing it with the screws and confirm the error stays cleared during a full test cycle.
7. Reconnect all the wire harnesses to their correct terminals on the new board and reassemble the dryer.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Error Code: E90 Difficulty: Hard

Problem: Electronics fault.

How to Fix E90 Error (Step-by-Step)

1. Unplug the dryer from the power source for at least 5 minutes to allow the electronics to reset.
2. Remove the top panel of the dryer to access the main control board.
3. Visually inspect the control board for any signs of damage, such as burn marks or loose connections.
4. Carefully check the wiring between the control board and the user interface, ensuring all connections are secure.
5. If a connection is loose, reseat it firmly. If damage is visible, the control board will likely need to be replaced.
6. Reassemble the dryer and plug it back in to see if the error is cleared.
7. Turn the appliance off, wait about 2 minutes, then turn it back on.

Error Code: EMPTY RESERVOIR Difficulty: Hard

Problem: The condensation water container is full and needs to be emptied.

How to Fix EMPTY RESERVOIR Error (Step-by-Step)

1. Unplug the dryer from the power outlet and confirm the error stays cleared during a full test cycle.
2. If your dryer is connected to a drain, ensure the drain hose is not kinked or clogged.
3. For models with a condensation container, remove and empty it.
4. Access the condenser area, which may be at the bottom front of the dryer, and remove the condenser unit.
5. Clean the condenser by rinsing it with water and confirm the error stays cleared during a full test cycle.
6. While the condenser is out, inspect the sump area beneath it for any lint buildup and clean it out.
7. Reassemble all components, plug the dryer back in, and run a test cycle.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Error Code: F01 Difficulty: Hard

Problem: Faulty inlet valve.

How to Fix F01 Error (Step-by-Step)

1. Turn off the water supply and unplug the dryer and confirm the error stays cleared during a full test cycle.
2. Access the rear of the dryer to locate the water inlet valve.
3. Place a towel beneath the hoses to catch any residual water and then disconnect them from the valve.
4. Remove the mounting screws that hold the inlet valve in place.
5. Carefully disconnect the electrical wires from the old valve and confirm the error stays cleared during a full test cycle.
6. Install the new inlet valve by securing it with the mounting screws and reconnecting the electrical wires.
7. Reattach the water hoses, turn the water supply on, and check for leaks before plugging the dryer back in.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Error Code: F42 Difficulty: Hard

Problem: Issue with the carbon brushes in the motor.

How to Fix F42 Error (Step-by-Step)

1. Disconnect the dryer from the power source and confirm the error stays cleared during a full test cycle.
2. Remove the necessary panels to gain access to the dryer’s motor.
3. Locate the carbon brushes on the motor housing and confirm the error stays cleared during a full test cycle.
4. Disconnect the electrical leads attached to the brushes and confirm the error stays cleared during a full test cycle.
5. Remove the screws or clips holding the old carbon brushes in place and remove them.
6. Insert the new carbon brushes and secure them and confirm the error stays cleared during a full test cycle.
7. Reconnect the electrical leads and reassemble the dryer and confirm the error stays cleared during a full test cycle.
8. Turn the appliance off, wait about 2 minutes, then turn it back on.

Error Code: H32 Difficulty: Easy

Problem: Unbalanced load.

How to Fix H32 Error (Step-by-Step)

1. Pause the drying cycle and wait for the drum to stop.
2. Open the dryer door and look for any tangled or balled-up laundry.
3. Untangle the items and redistribute them evenly inside the drum.
4. Avoid overloading the dryer, as this can lead to unbalanced loads.
5. If you are drying a single large item, add a few smaller items to help balance the load.
6. Close the door and resume the drying cycle and confirm the error stays cleared during a full test cycle.
7. Turn the appliance off, wait about 2 minutes, then turn it back on.

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.

Error Code: SQUARE WITH CIRCLE AND TWO DOTS Difficulty: Easy

Problem: Normal drying at a regular temperature.

How to Fix SQUARE WITH CIRCLE AND TWO DOTS Error (Step-by-Step)

1. Locate this symbol on your dryer’s control panel. It indicates the ‘Normal’ or ‘Cottons’ drying setting, which uses a standard heat level.
2. This is a standard cycle indicator, not an error message. It is intended for drying durable fabrics like cotton towels, jeans, and bedding.
3. To activate this cycle, first power on the dryer and confirm the error stays cleared during a full test cycle.
4. Rotate the main program dial to a cycle designed for robust fabrics, such as ‘Cottons’ or ‘Regular’.
5. On models with a separate temperature selection, ensure the medium or high heat option (often indicated by this two-dot symbol) is selected.
6. Place your regular laundry load into the drum, ensure the door is securely closed, and press the ‘Start’ button to run the normal drying cycle.
7. Turn the appliance off, wait about 2 minutes, then turn it back on.

Still Not Working?
If the replacement part didn’t fix the issue, you may have a wiring problem or main board failure.