Continental Washer Error Code A-08

A-08 indicates an overvoltage condition in the DC link circuit during constant-speed operation, with the inverter internally displaying the fault as OU3. The inverter drive monitors the voltage on its internal DC bus, and this error triggers when that voltage rises above the acceptable limit. This is most commonly caused by incoming supply voltage that is too high or unbalanced across the three phases. The machine shuts down to prevent damage to the motor drive system.

No, you should not continue operating the washer while error A-08 is active. The fault indicates the motor drive system is being exposed to excessive voltage, which can damage the inverter board and motor over time. The machine's control system shuts down as a protective measure, and running it repeatedly through resets without resolving the root cause risks permanent component damage.

If the problem is a utility supply voltage issue, costs may be limited to an electrician service call to inspect and correct panel or wiring problems, typically in the range of $100 to $300 depending on what is found. If the inverter drive board has failed and needs replacement, parts and labor costs can range from $300 to $700 or more depending on part availability and local labor rates. Getting a proper diagnosis before ordering parts is recommended to avoid unnecessary expense.

Start by measuring the incoming three-phase supply voltage across L1-L2, L2-L3, and L1-L3 using a voltmeter. All readings should be between 208 and 240 volts and within plus or minus 2 volts of each other. If the voltage is out of range or unbalanced, the issue lies with the electrical supply and should be addressed by a licensed electrician. If the supply voltage checks out correctly and the fault continues, the inverter drive board may need further inspection or replacement.

A power reset may temporarily clear the fault display, but the error will return if the underlying voltage condition has not been corrected. Because A-08 is triggered by real-time monitoring of the DC link voltage, the inverter will re-detect the overvoltage condition as soon as the machine reaches constant speed again. A lasting fix requires resolving the supply voltage issue or repairing the faulty component causing the problem.