Liebherr freezer GN 5235 Comfort Manual

The Liebherr GN 5235 Comfort is a high-quality upright freezer featuring NoFrost technology, electronic temperature control with digital display, super freeze function, interior LED lighting, reversible door, adjustable feet, and alarm system. Designed for household use with energy efficiency class A++ or better. Below are key sections for safety, features, installation, setup, operation, maintenance, and troubleshooting.

1. Features at a Glance 2. Installation 3. First-Time Setup 4. Specifications 5. Controls and Settings 6. Storage Organization 7. NoFrost Technology 8. Energy Saving Tips 9. Care & Cleaning 10. Regulatory Information 11. Troubleshooting

Features at a Glance

Key components: NoFrost system, electronic control panel, LED interior light, adjustable glass shelves, door bins, freezer drawers, reversible door hinges, and adjustable feet.

Feature	Description
NoFrost technology	Prevents ice buildup automatically; no manual defrosting required
Electronic control panel	Digital display with temperature setting and function buttons
Super freeze function	Rapidly freezes fresh food to preserve quality
Interior LED lighting	Energy-efficient illumination of freezer compartment
Reversible door	Door can be hung to open from left or right side
Adjustable feet	Leveling feet to ensure stable placement
Alarm system	Audible and visual warning for temperature increase or door left open
Glass shelves	Adjustable and sturdy for flexible storage
Freezer drawers	Containers for organized food storage
Energy class	High energy efficiency (A++ or better)

Installation

Unpack and inspect contents. Place on stable, level surface.

Choose location: Install in dry, well-ventilated area away from heat sources.
Adjust feet: Use wrench to turn adjustable feet until unit is level.
Set door hinge: Decide left or right opening; reverse door if needed (tools included).
Connect to power: Plug into grounded 120V AC outlet.
Clearance: Ensure at least 2 inches clearance at back and sides for ventilation.

WARNING! Freezer is heavy; use two people for moving. Ensure proper ventilation to prevent overheating.

First-Time Setup

After installation, allow freezer to stabilize before loading food.

Initial cooling: Plug in and turn on; let run empty for 3-4 hours to reach set temperature.
Set temperature: Use control panel to set desired freezer temperature (recommended -18°C / 0°F).
Activate Super freeze: Press SUPER FREEZE button for 24 hours before loading large quantities of fresh food.
Load food: Place food items evenly, avoiding blocking air vents.
Alarm test: Check alarm function by holding ALARM TEST button.

CAUTION! Do not load warm food directly; let cool to room temperature first.

Specifications

Model: GN 5235 Comfort
Type: Upright freezer with NoFrost
Total Capacity: Approximately 235 liters (net volume)
Energy Class: A++ or better (depending on region)
Climate Class: SN-T (intended for ambient temperatures +10°C to +43°C)
Refrigerant: R600a (isobutane)
Noise Level: ≤ 40 dB(A)
Power Supply: 120V AC, 60Hz
Annual Energy Consumption: Approximately 180 kWh (may vary)
Dimensions (HxWxD): 177 x 60 x 64 cm
Weight: Approximately 65 kg

Controls and Settings

Control panel located on front exterior (top section).

Buttons and Display: POWER ON/OFF, Temperature SET (+/-), SUPER FREEZE, ALARM RESET/TEST, LOCK (child lock). Digital display shows set temperature, actual temperature, and active functions.

Temperature Setting: Range from -24°C to -16°C (-11°F to 3°F). Recommended setting: -18°C (0°F). Super Freeze: Activates for 24 hours or until manually turned off; accelerates freezing of fresh food. Alarm: Sounds if temperature rises above -15°C (5°F) or door left open >2 minutes. Child Lock: Press and hold LOCK for 3 seconds to disable control panel.

Storage Organization

Optimize storage for energy efficiency and food preservation.

Use drawers for frozen vegetables, fruits, ice cream.
Use shelves for packaged items, frozen meals, meat trays.
Door bins for smaller items: ice packs, frozen herbs, butter.
Do not overfill; allow air circulation around items.
Label and date food packages for easy identification.

Tip: Group similar items together and place frequently used items at front.

NoFrost Technology

Automatic defrosting system eliminates manual defrosting.

How it works: Fan circulates cold air; moisture is collected and evaporated.
Benefits: No ice buildup on walls or shelves; consistent temperature.
Maintenance: Ensure air vents inside are not blocked by food items.
Indicator: NoFrost icon appears on display when system is active.

Note: Slight humming noise during defrost cycle is normal.

Energy Saving Tips

Maximize efficiency to reduce electricity consumption.

Set temperature to -18°C (0°F); each degree lower increases energy use by ~5%.
Ensure door seals are clean and tight; replace if damaged.
Open door minimally and briefly; plan removal of items.
Place freezer away from ovens, heaters, direct sunlight.
Allow hot food to cool before placing inside.
Keep condenser coils (rear) dust-free; vacuum periodically.

Care & Cleaning

Unplug before cleaning. Use mild detergent and soft cloth.

Interior: Remove all food; wipe shelves, drawers, walls with damp cloth. Dry thoroughly.
Exterior: Clean door and control panel with soft cloth; avoid abrasive cleaners.
Door seals: Wipe with water and mild soap; check for debris.
Condenser coils: Vacuum rear grille every 6-12 months to remove dust.
Defrost drain (if applicable): Check for blockages; clean with pipe cleaner.

CAUTION! Do not use sharp objects, steam cleaners, or chemical solvents. Never pour water into freezer.

Regulatory Information

Complies with relevant safety and environmental standards (e.g., UL, Energy Star, RoHS). Contains refrigerant R600a (flammable); disposal must follow local regulations. Copyright © Liebherr-International AG. For support, visit www.liebherr.com or contact customer service at 1-800-944-5374.

Troubleshooting

Symptom	Possible Cause	Corrective Action
Freezer not cooling	Power issue / settings	Check plug connection; ensure power switch is ON; verify temperature setting.
Alarm sounds	Door open / temperature rise	Close door properly; check if food blocks door seal; wait for temperature to drop.
Excessive frost/ice	Door seal / usage	Check door seal for damage; avoid leaving door open; ensure NoFrost is active.
Unusual noise	Vibration / fan	Ensure freezer is level; check for items touching rear wall; noise during defrost cycle is normal.
Display not working	Power / child lock	Check power supply; disable child lock (hold LOCK button).
Water inside or under unit	Drain blockage / condensation	Check drain hole for blockage; ensure room humidity is not excessive.

Reset: Unplug for 5 minutes, then reconnect to reset electronic control.

Service: 1-800-944-5374; www.liebherr.com