1. Introduction and Overview
This user manual provides essential information for the safe and efficient operation of your Neff KI5871SE0 built-in refrigerator-freezer combination. Designed for seamless integration into your kitchen, this appliance features advanced technologies like Eco Air Flow and Fresh Safe to ensure optimal food preservation.
Please read this manual thoroughly before installation, first use, or maintenance to ensure proper functioning and to prevent damage or injury. Keep this manual for future reference.

Image: The Neff KI5871SE0 built-in refrigerator-freezer with its doors open, showcasing the spacious interior of both the refrigerator and freezer compartments, including shelves and drawers.
2. Safety Information
Your safety is paramount. Always adhere to the following general safety guidelines:
- Electrical Safety: Ensure the appliance is correctly earthed and connected to a suitable power supply. Do not use extension cords or multiple socket adapters.
- Installation: Installation must be performed by a qualified professional to prevent electrical hazards or damage to the appliance.
- Children and Vulnerable Persons: This appliance can be used by children aged 8 years and above and persons with reduced physical, sensory or mental capabilities or lack of experience and knowledge if they have been given supervision or instruction.
- Flammable Materials: Do not store explosive substances such as aerosol cans with a flammable propellant in this appliance.
- Maintenance: Always unplug the appliance before cleaning or performing any maintenance.
For detailed safety instructions, refer to the comprehensive safety section in the full product manual provided with your appliance.
3. Setup and Installation
The Neff KI5871SE0 is designed as a built-in appliance. Proper installation is crucial for its performance and longevity. It is highly recommended that installation be carried out by a certified technician.
3.1 Dimensions and Niche Requirements
Ensure the installation niche meets the following dimensions for proper fit and ventilation:
- Appliance Dimensions (H x W x D): 1772 x 541 x 548 mm
- Minimum Niche Height: 1775 mm
- Maximum Niche Height: 1775 mm
- Minimum Niche Width: 560 mm
- Maximum Niche Width: 560 mm
- Niche Depth: 550 mm

Image: A technical diagram illustrating the precise dimensions of the Neff KI5871SE0 appliance in millimeters, crucial for built-in installation.
3.2 Door Hinge Reversibility
The door hinge is reversible, allowing you to change the opening direction from right to left, depending on your kitchen layout. This procedure should be performed by a qualified technician.
4. Operating Instructions
Familiarize yourself with the control elements to effectively manage your appliance's settings.
4.1 Control Elements
The appliance features intuitive controls for temperature management and alerts:
- Superswitch Freezing: Activates the Super Freeze function for rapid freezing of fresh food.
- Superswitch Cooling: Activates the Super Cooling function for rapid cooling of fresh food.
- Door Open Warning Signal: An audible alarm will sound if the door is left open for too long.
4.2 Temperature Settings
Adjust the temperature settings for both the refrigerator and freezer compartments according to your needs and the type of food stored. Refer to the full manual for recommended temperature ranges for various food items.
4.3 Food Storage Guidelines
To maximize food freshness and minimize energy consumption:
- Store raw meat and fish in suitable containers in the refrigerator to prevent contact with or dripping onto other food.
- Do not place hot food directly into the appliance; allow it to cool to room temperature first.
- Ensure food is properly wrapped or covered to prevent drying out and odor transfer.
5. Key Features
5.1 Fresh Safe Drawer
The Fresh Safe drawer provides an optimal environment for storing fruits and vegetables. It helps maintain their freshness and crispness for longer by controlling humidity levels.

Image: A detailed view of the Fresh Safe drawer, designed to keep fruits and vegetables fresh, shown with various produce items inside.
5.2 Eco Air Flow System
The Eco Air Flow system ensures uniform distribution of temperature and humidity throughout the refrigerator compartment. This consistent environment helps to keep your food fresher for extended periods and prevents dry spots or excessive moisture.

Image: A visual representation of the Eco Air Flow system, depicting how air circulates evenly within the refrigerator to maintain consistent temperature and humidity.
5.3 Low Frost Technology
The freezer compartment features Low Frost technology, which significantly reduces ice build-up compared to conventional freezers. This means less frequent defrosting is required, saving you time and effort, and maintaining energy efficiency.

Image: A close-up view of the freezer compartment, highlighting the Low Frost feature with reduced ice formation around frozen food items.
6. Maintenance
Regular maintenance ensures the longevity and optimal performance of your appliance.
6.1 Cleaning
- Always unplug the appliance before cleaning.
- Clean the interior and exterior surfaces with a soft cloth and a mild, non-abrasive detergent.
- Do not use abrasive cleaners, solvents, or harsh chemicals.
- Regularly clean the door seals to ensure a tight closure.
6.2 Defrosting
Thanks to Low Frost technology, manual defrosting of the freezer compartment is required less frequently. When a layer of ice approximately 3-5 mm thick has formed, it is advisable to defrost the freezer to maintain energy efficiency.
- Remove all food items and store them in a cool place.
- Unplug the appliance.
- Leave the freezer door open to allow ice to melt naturally. Place towels at the bottom to collect water.
- Once defrosted, clean and dry the interior thoroughly before plugging the appliance back in and returning food.
7. Troubleshooting
Before contacting customer service, please check the following common issues:
| Problem | Possible Cause | Solution |
|---|---|---|
| Appliance not cooling | No power supply; temperature setting too high; door not closed properly. | Check power plug and fuse; adjust temperature setting; ensure door is fully closed. |
| Unusual noises | Appliance not level; objects vibrating against the back wall; normal operating sounds (e.g., refrigerant flow). | Adjust leveling feet; move objects away from the back wall; normal sounds are not a fault. |
| Water on the bottom of the refrigerator compartment | Blocked drain hole. | Clear the drain hole with a small, soft tool (e.g., cotton swab). |
If the problem persists after checking these points, please contact Neff customer service or a qualified technician.
8. Specifications
Key technical specifications for the Neff KI5871SE0 refrigerator-freezer:
| Feature | Value |
|---|---|
| Model Number | KI5871SE0 |
| Total Volume (EU 2017/1369) | 270 L |
| Refrigerator Volume (EU 2017/1369) | 200 L |
| Freezer Volume (EU 2017/1369) | 70 L |
| Energy Efficiency Class (EU 2017/1369) | E |
| Annual Energy Consumption (EU 2017/1369) | 216 kWh/a |
| Noise Level | 35 dB(A) re 1 pW |
| Noise Efficiency Class | B |
| Dimensions (H x W x D) | 1772 x 541 x 548 mm |
| Net Weight | 50.9 kg |
| Door Hinge | Right, reversible |

Image: The official EU Energy Label for the Neff KI5871SE0, displaying its energy efficiency class, annual energy consumption, and noise level.
For more detailed product information, you can scan the QR code on the energy label or visit the EPREL database:
9. Warranty and Support
Your Neff KI5871SE0 appliance comes with a 2-year manufacturer warranty. This warranty covers defects in materials and workmanship under normal use.
For warranty claims, technical support, or service requests, please contact Neff customer service. Have your model number (KI5871SE0) and purchase date ready when you call.
You can find contact information for Neff customer service on the official Neff website or in the documentation provided with your appliance.





