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Bosch Refrigerator Error Code Co

Display Full Down mode.

Bosch codesBosch refrigerator codes

Display Full Down mode.

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What Co means on a Bosch refrigerator

The Co error code on a Bosch refrigerator indicates that the unit is operating in Display Full Down mode, also referred to as a demo or showroom mode. In this mode, the refrigerator's compressor and cooling systems are disabled while the display panel and interior lighting continue to function normally. This mode is typically activated during retail display so that units can be shown to customers without running the cooling system continuously.

Display Full Down mode is a deliberate operational state rather than a component failure or fault condition. The control board holds the compressor and fans in an inactive state while keeping the user interface active. Because cooling is suspended, a refrigerator stuck in this mode will not maintain safe food storage temperatures, making it important to identify and exit the mode promptly.

The Co code most commonly appears after a unit has been recently installed, powered on for the first time, or had a power interruption that caused the control board to revert to a default display state. It can also be triggered accidentally through a specific button combination on the control panel. Resolving this condition typically involves a panel button sequence to toggle the unit out of demo mode and restore normal compressor and cooling operation.

Source: manufacturer service documentation.

Common causes of Co

  1. 01

    Demo mode activated at installation

    Wiring / connection

    New units are sometimes shipped or stored with demo mode enabled from the factory or retailer. The refrigerator powers on in this state and displays the Co code until the mode is manually exited.

  2. 02

    Accidental button combination press

    Wiring / connection

    Certain button sequences on the control panel can inadvertently activate Display Full Down mode during normal use. Checking whether the code appeared after adjusting settings on the control panel can help confirm this cause.

  3. 03

    Power interruption or reset

    Wiring / connection

    A power outage, voltage fluctuation, or hard reset can cause the control board to revert to a demo mode default state. If the Co code appeared after a power event, this is a likely explanation.

  4. 04

    Control board retaining demo mode setting

    Part replacement

    In rare cases, the control board may not properly exit demo mode even after the correct button sequence is performed. This can indicate a control board issue that may require further diagnosis or board replacement.

See the test procedure for each cause

Frequently asked questions about Co

What does Co mean on a Bosch refrigerator?
The Co code on a Bosch refrigerator indicates the unit is in Display Full Down mode, which is a demo or showroom setting. In this state, the compressor and cooling system are turned off, though the display and interior lights remain active. The refrigerator will not cool food while this mode is active. Exiting demo mode through the control panel will restore normal cooling operation.
How do I fix the Co code on my Bosch refrigerator?
The Co code is typically resolved by pressing a specific button combination on the control panel to deactivate Display Full Down mode. The exact sequence varies by model, so consulting your unit's user guide for the demo mode exit procedure is recommended. Once the mode is deactivated, the compressor should resume and the Co code should clear. If the code returns after performing the correct steps, the control board may need further inspection.
Is the Co code on a Bosch refrigerator dangerous?
The Co code itself does not indicate a hazardous condition, but it does mean the refrigerator is not cooling. Food stored in the unit while Co is active will not be kept at a safe temperature, which can lead to spoilage. It is best to address the code promptly and avoid storing perishable food until cooling is confirmed to have resumed.
Will resetting my Bosch refrigerator clear the Co code?
A simple power reset, such as unplugging the unit and plugging it back in, may not clear the Co code if the control board retains the demo mode setting after power is restored. The correct method is to exit Display Full Down mode using the designated control panel button sequence. If a power reset does clear the code, monitor the unit to ensure it does not re-enter demo mode on its own.
How much does it cost to fix the Co code on a Bosch refrigerator?
In most cases, resolving the Co code costs nothing because it involves deactivating demo mode through the control panel with no parts required. If the control board is preventing the unit from exiting demo mode correctly, board replacement could range from moderate to higher repair costs depending on parts and labor in your area. A service call for diagnosis alone can range from around $75 to $150 or more depending on your location and the technician.

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