AEG Washer Error Code CC

The CC error code on an AEG washer indicates that the PTC (Positive Temperature Coefficient) thermistor monitoring the MOSFET (Metal-Oxide-Semiconductor Field-Effect Transistor) on the DC motor electronics has detected an overtemperature condition. The DC motor electronics board controls the variable-speed DC drive motor by regulating current through high-power MOSFETs. These transistors generate significant heat during operation, and the PTC thermistor is positioned directly on or near the MOSFET to protect the board from thermal damage by signaling when temperatures exceed safe operating limits.

When the PTC thermistor senses excessive heat at the MOSFET junction, the washer halts operation and triggers the CC code to prevent permanent damage to the motor control electronics. This protection mechanism is critical because MOSFET failure from overheating can cascade into broader board failure, making the thermal shutdown a built-in safety circuit. The root cause is almost always either a failure within the DC motor electronics board itself or an external condition causing the MOSFETs to work harder than normal, generating excess heat.

Common contributing factors include a faulty DC motor drawing excessive current, a failing motor control board with degraded MOSFETs or compromised thermal management components, blocked ventilation around the control electronics, or a defective PTC thermistor that is reporting overtemperature falsely. Because the diagnostic path leads directly to replacing the DC motor electronics, the board assembly is considered the primary suspect when this code appears.