Bosch Refrigerator Error Code 1100

Error code 1100 on a Bosch refrigerator indicates an inverter error caused by motor asymmetry in the compressor system. The inverter board has detected an electrical imbalance across the compressor motor windings, which can stem from wiring issues, connector faults, or a failing compressor motor. The refrigerator shuts down this function to prevent further damage to the compressor.

A power reset may temporarily clear the error code, but if the underlying cause, such as a faulty connector, damaged harness, or failing compressor winding, has not been addressed, the 1100 code will return once the inverter detects the asymmetry again. Resetting is useful for ruling out a one-time glitch but should not substitute for a proper diagnosis.

Repair costs vary depending on the root cause. Connector or harness repairs are generally in the range of $100 to $250 including labor. An inverter board replacement typically runs between $200 and $450 depending on parts and labor rates. Compressor replacement is the most expensive scenario, often ranging from $400 to $800 or more, and may prompt a cost-versus-replacement evaluation for older units.

Some homeowners with electrical knowledge can inspect and reseat connectors or check the wire harness for obvious damage. However, diagnosing motor winding resistance or evaluating the inverter board output requires a multimeter and comfort working near refrigeration components. Compressor or inverter board replacement should be handled by a qualified appliance technician.

It is not advisable to continue using the refrigerator while this error is active. The inverter shuts down compressor operation to prevent damage, which means the unit may not be maintaining safe food storage temperatures. Continuing to run it in a fault state can also risk further damage to the inverter board or compressor.