Bosch Refrigerator Error Code 0100

Error code 0100 on a Bosch refrigerator indicates an inverter error caused by a locked rotor condition. This means the inverter board detected that the compressor motor is not rotating when commanded to run. The refrigerator shuts down the compressor to prevent damage, and the fault must be diagnosed and resolved before normal cooling can resume.

The error itself is a protective shutdown, so the refrigerator is designed to stop operating before serious damage occurs. There is no immediate safety hazard from the error code itself. However, leaving the underlying problem unresolved will result in continued cooling loss, which can cause food spoilage over time.

Repair costs vary significantly depending on the root cause. Fixing a loose or damaged wire harness is relatively inexpensive, typically in the range of $75 to $200 including labor. Replacing an inverter board generally falls between $200 and $450 depending on parts and labor rates. A compressor replacement is the most expensive outcome, often ranging from $400 to $900 or more, and the age of the refrigerator should be weighed against that cost.

The first step, checking the wire harness and connectors between the inverter and compressor, is something a mechanically inclined homeowner can attempt safely with the refrigerator unplugged. However, further diagnosis involving compressor winding resistance testing, inverter output signals, or refrigerant system pressure requires specialized tools and training. If the compressor or inverter board needs replacement, a qualified technician should perform the work.

A power reset may temporarily clear the fault display and allow the compressor to attempt a restart. However, if the underlying cause, such as a wiring fault, failed compressor, or defective inverter board, is still present, the error code 0100 will return quickly once the inverter detects the locked rotor condition again. A reset is useful for confirming whether the fault is intermittent, but it is not a repair.