Error Code Error 27

Error Code 27 (Bosch/Siemens Washing Machines)

Error Code: Error 27 Appliance Type: Washing Machine Applicable Brands: Bosch, Siemens

This error code, Error 27, specifically points toward a malfunction or communication breakdown involving the power module (often referred to as the main control board or PCB) or a synchronization error between internal components. This usually means the electronic control system responsible for managing the motor functions and overall operation is encountering a serious fault.

Recommended Initial Troubleshooting Steps

Before seeking professional assistance, you can attempt a basic system reset, which can sometimes clear temporary electronic glitches:

1. Perform a Full Power Cycle (Reset):
   • Switch Off: Turn the washing machine off using the main power switch or dial, if applicable.
   • Unplug the Unit: Completely disconnect the appliance from the electrical wall socket. This step is crucial as it allows any residual charge to dissipate from the capacitors within the power module, effectively performing a “hard reset” of the entire electronic system.
   • Wait Period: Leave the machine unplugged for a minimum of 5 to 10 minutes. This extended waiting time ensures that the main electronic board fully powers down.
   • Reconnect and Retest: Plug the machine back into the wall outlet and attempt to run a short, basic program (like a rinse cycle) to see if the Error 27 code has cleared and the machine operates normally.

When Professional Service is Required

If the Error 27 persists immediately after performing the power cycle reset, the issue is likely a persistent hardware defect.

• Persistent Electronic Fault: Since this error specifically flags issues with the power module, it suggests that the internal electronics—the component that controls the motor speed, water intake, and timing sequences—may have failed internally due to a component breakdown, power surge damage, or wear and tear.
• Synchronization Issue: A synchronization error implies that the main control board cannot properly communicate with or receive feedback from the motor control board or the motor itself. Diagnosing this requires specialized electronic testing equipment.

Action Required: If the error continues after the suggested reset, contact a qualified repair technician immediately. Attempting to open or repair the power module yourself is strongly discouraged due to the high voltage involved and the complex nature of modern electronic components. The technician will need to test and likely replace the defective internal electronics.