Brand: BOSCH
Category: Refrigerator
Document Type: Manual
Language: EN
Manual for KDN43
Uploaded: Nov. 21, 2025, 6:38 p.m.
Warranty Information
Detailed warranty information is available from after-sales service, your retailer, or on the Bosch website.
This manual provides instructions for operating and maintaining your Bosch fridge-freezer. It covers safety precautions, basic operation, setting temperatures, additional functions like Super freezing, alarms, storing food in both the refrigerator and freezer compartments, defrosting, cleaning, and troubleshooting. It also includes information on customer service and technical data.
Troubleshooting and error codes
| Fault | Cause and troubleshooting |
|---|---|
| The appliance is not cooling, the displays and lighting are lit. | Showroom mode is switched on. 1. Press and hold for 9-11 seconds until an audible signal sounds. 2. After a short time, check whether your appliance is cooling. |
| The LED lighting does not work. | Different causes are possible. Call customer service. The customer service number can be found in the enclosed customer service directory. |
| Side panels of the appliance are warm. | Not a fault. The side panels contain pipes which heat up during the cooling process. Units touching the appliance will not be damaged by the heat. No action required. |
| The temperature differs greatly from the setting. | Different causes are possible. 1. Switch off the appliance. → Page 39 2. Switch the appliance back on after five minutes. → Page 39 If the temperature is too warm, check the temperature again after a couple of hours. If the temperature is too cold, check the temperature again on the following day. |
| Condensation accumulates on the surface of the appliance and on the shelves inside. | The water contained in warm and humid air condenses on the colder surfaces of the appliance. 1. Wipe away the water with a soft, dry cloth. 2. Open the appliance as briefly as possible. 3. Ensure that the appliance is always closed properly. |
| The appliance hums, bubbles, buzzes, gargles, clicks or crackles. | Not a fault. A motor is running, e.g. refrigerating unit, fan. Refrigerant flows through the pipes. The motor, switches or solenoid valves are switching on or off. Automatic defrosting is running. No action required. |
| The appliance makes noises. | The appliance is not level. Align the appliance using a spirit level and the screw feet. The appliance is not free-standing. Observe the minimum clearances for the appliance. Fittings wobble or stick. Check the removable fittings and, if required, replace these. Bottles or containers are touching. Move the bottles or containers away from each other. Super freezing is switched on. No action required. |