The meaning and troubleshooting steps for the Err4 error code on Haier washing machines can vary depending on the specific model you have.

The Err3 error code on Haier washing machines typically indicates an issue with the water temperature sensor. This means the sensor responsible for measuring water temperature during the washing cycle is malfunctioning or isn't sending accurate readings to the control board.

The Err2 error code on a Haier washing machine indicates a drainage issue. This means the machine is unable to drain the water properly within the allotted time.

The Err1 error code on a Haier washing machine usually indicates a problem with the door lock mechanism

The F28 error code on Bosch washing machines indicates a fault with the flow sensor. This sensor is responsible for monitoring the water flow entering the machine during various wash cycles. Depending on your specific model, the F28 code might represent a slightly different issue related to water flow.

The F27 error code signifies a faulty pressure sensor. This sensor plays a crucial role in monitoring water pressure levels throughout the wash cycle, ensuring appropriate water levels for different stages.

The F25 error code on Bosch washing machines actually indicates a fault with the drain pump. This means the pump responsible for removing water from the drum during the spin cycle is malfunctioning or encountering issues.

The E25 error code indicates a problem with the turbidity sensor. This sensor measures the water's cloudiness or "dirtiness" during wash cycles. An E25 error suggests the sensor detects an issue, impacting the machine's ability to determine the appropriate cleaning level.

The F23 error code on Bosch washing machines indicates the activation of the Aquastop hose, which is a built-in water leak protection system. This means the hose has detected water leakage somewhere in the machine, triggering the safety measure to prevent further damage

The E20 error code on Bosch washing machines signifies unexpected heating during a non-heating cycle, such as the rinse cycle. This suggests the water is heating when it shouldn't be, potentially harming your clothes or causing damage to the machine.