Ninja DZ400EU

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Ninja Air Fryer Dual Zone MAX Digital 9.5L (DZ400EU)

Instruction Manual

Introduction

Thank you for purchasing the Ninja Air Fryer Dual Zone MAX Digital 9.5L (Model DZ400EU). This appliance is designed to provide versatile cooking options with its dual-zone technology and six cooking functions. Please read this manual thoroughly before use to ensure safe and optimal operation.

Important Safety Instructions

WARNING: To reduce the risk of fire, electric shock, or injury, always follow these basic safety precautions.

  • Read all instructions before using the appliance.
  • Do not touch hot surfaces. Use handles or knobs.
  • To protect against electric shock, do not immerse cord, plugs, or main unit housing in water or other liquid.
  • Close supervision is necessary when any appliance is used by or near children.
  • Unplug from outlet when not in use and before cleaning. Allow to cool before putting on or taking off parts.
  • Do not operate any appliance with a damaged cord or plug, or after the appliance malfunctions or has been damaged in any manner. Contact Ninja customer service for examination, repair, or adjustment.
  • The use of accessory attachments not recommended by the appliance manufacturer may cause injuries.
  • Do not use outdoors.
  • Do not let cord hang over edge of table or counter, or touch hot surfaces.
  • Do not place on or near a hot gas or electric burner, or in a heated oven.
  • Extreme caution must be used when moving an appliance containing hot oil or other hot liquids.
  • Always attach plug to appliance first, then plug cord into the wall outlet. To disconnect, turn any control to "off", then remove plug from wall outlet.
  • Do not use appliance for other than intended use.
  • Ensure the appliance is placed on a stable, level, heat-resistant surface.
  • Do not block any ventilation openings.
  • This appliance has a polarized plug (one blade is wider than the other). To reduce the risk of electric shock, this plug is intended to fit into a polarized outlet only one way. If the plug does not fit fully into the outlet, reverse the plug. If it still does not fit, contact a qualified electrician. Do not attempt to modify the plug in any way.

Product Overview and Components

The Ninja Air Fryer Dual Zone MAX DZ400EU features two independent cooking zones, allowing you to cook different foods simultaneously with different settings. The total capacity is 9.5 liters, split into two 4.75-liter drawers.

Ninja Air Fryer Dual Zone MAX DZ400EU with two cooking drawers and digital control panel

Image: Front view of the Ninja Air Fryer Dual Zone MAX DZ400EU, showcasing its two independent cooking drawers and the central digital control panel.

Key Components:

  • Main Unit: Houses the heating elements, fan, and control panel.
  • Cooking Drawers (2): Two 4.75L non-stick drawers for holding food.
  • Crisper Plates (2): Non-stick, removable plates designed to allow air circulation around food for even crisping.
  • Digital Control Panel: Features touch controls for modes, time, temperature, and dual-zone functions (SYNC and MATCH).
Contents of the Ninja Air Fryer Dual Zone MAX DZ400EU box including main unit, two drawers, two crisper plates, and recipe guide

Image: The contents of the product box, including the main air fryer unit, two 4.75L non-stick drawers, two non-stick crisper plates, and a recipe guide.

Setup and First Use

  1. Unpack: Remove all packaging materials, promotional labels, and tape from the unit.
  2. Clean Components: Wash the cooking drawers and crisper plates in warm, soapy water, then rinse and dry thoroughly. The drawers and crisper plates are also dishwasher-safe.
  3. Wipe Main Unit: Wipe the exterior of the main unit with a clean, damp cloth.
  4. Placement: Place the main unit on a clean, dry, level, heat-resistant surface. Ensure there is adequate space (at least 15 cm / 6 inches) around the unit for proper air circulation.
  5. Insert Crisper Plates: Place the crisper plates into the cooking drawers.
  6. Initial Run (Optional but Recommended): For the first use, it is recommended to run the appliance empty for about 10-15 minutes at 200°C (390°F) to eliminate any manufacturing odors. A slight odor is normal during this process.

Operating Instructions

Control Panel Overview

Close-up of Ninja Air Fryer control panel showing digital displays, mode selection, temperature and time controls, and SYNC/MATCH buttons

Image: Detailed view of the digital control panel, highlighting the mode selector dial, temperature and time adjustment buttons, and the SYNC and MATCH functions for dual-zone cooking.

  • Power Button: Turns the unit on/off.
  • Zone 1 / Zone 2 Displays: Show cooking time and temperature for each drawer.
  • Function Dial: Rotate to select cooking modes (Air Fry, Max Crisp, Roast, Bake, Reheat, Dehydrate).
  • Temp Arrows (Up/Down): Adjust cooking temperature.
  • Time Arrows (Up/Down): Adjust cooking time.
  • SYNC Button: Synchronizes finish times for different cooking settings in each zone.
  • MATCH Button: Duplicates settings from Zone 1 to Zone 2.
  • Start/Stop Button: Begins or pauses cooking.

Cooking Modes

The Ninja Air Fryer offers 6 versatile cooking functions:

  • Air Fry: Uses hot air to cook food with little to no oil, resulting in a crispy finish. Ideal for fries, chicken wings, and vegetables.
  • Max Crisp: Designed for cooking frozen foods quickly at very high temperatures for maximum crispiness.
  • Roast: Perfect for tender meats, roasted vegetables, and more.
  • Bake: For baking cakes, pastries, and other delicate items.
  • Reheat: Gently warms leftovers to restore their original texture and flavor.
  • Dehydrate: Removes moisture from foods to create dried fruits, vegetable chips, or jerky.

Using Dual Zone Technology

SYNC Function

The SYNC function allows you to cook two different foods with different settings (mode, temperature, time) in each zone, ensuring they finish cooking at the same time.

  1. Place food in both cooking drawers.
  2. Select Zone 1. Choose your desired cooking mode, temperature, and time for Zone 1.
  3. Press the SYNC button.
  4. Select Zone 2. Choose your desired cooking mode, temperature, and time for Zone 2.
  5. Press Start/Stop. The unit will intelligently adjust the start times for each zone so both finish simultaneously.
Ninja Air Fryer showing SYNC function with chicken in one drawer and vegetables in the other, both cooking simultaneously

Image: The SYNC function in action, demonstrating how two different food items (e.g., a whole chicken and mixed vegetables) can be cooked in separate drawers with different settings, yet finish at the same time.

MATCH Function

The MATCH function allows you to quickly duplicate the settings from Zone 1 to Zone 2, ideal for cooking larger quantities of the same food.

  1. Place the same food in both cooking drawers.
  2. Select Zone 1. Choose your desired cooking mode, temperature, and time for Zone 1.
  3. Press the MATCH button. The settings from Zone 1 will automatically apply to Zone 2.
  4. Press Start/Stop. Both zones will begin cooking with identical settings.
Ninja Air Fryer showing MATCH function with identical food items (spring rolls) in both drawers, cooking with the same settings

Image: The MATCH function in use, showing identical food items (e.g., spring rolls) in both cooking drawers, indicating that both zones are cooking with the same settings for increased capacity.

General Cooking Tips

  • Always preheat the unit for a few minutes before adding food for best results, especially for Air Fry and Max Crisp modes.
  • Shake or toss food halfway through cooking for even browning and crisping.
  • Do not overfill the drawers. Ensure food is in a single layer for optimal air circulation.
  • Use a meat thermometer to ensure meats are cooked to safe internal temperatures.

Maintenance and Cleaning

Proper cleaning and maintenance will extend the life of your Ninja Air Fryer.

Cleaning After Each Use

  1. Unplug: Always unplug the unit from the power outlet and allow it to cool completely before cleaning.
  2. Wash Drawers and Crisper Plates: The cooking drawers and crisper plates are non-stick and dishwasher-safe. They can also be washed by hand with warm, soapy water and a non-abrasive sponge.
  3. Clean Main Unit: Wipe the main unit with a clean, damp cloth. Do not immerse the main unit in water or any other liquid.
  4. Avoid Abrasives: Do not use abrasive cleaning pads, steel wool, or harsh detergents on any part of the appliance.
Woman placing a Ninja Air Fryer drawer into a dishwasher, demonstrating its dishwasher-safe components

Image: A user placing one of the cooking drawers into a dishwasher, illustrating the ease of cleaning for the non-stick, dishwasher-safe components.

Storage

Ensure the appliance is clean and dry before storing. Store it in a cool, dry place, preferably in its original packaging or a protective cover.

Troubleshooting

If you encounter any issues with your Ninja Air Fryer, refer to the following table for common problems and solutions.

ProblemPossible CauseSolution
Appliance not turning on.Not plugged in; power outlet malfunction; unit not properly assembled.Ensure the power cord is securely plugged into a working electrical outlet. Check your circuit breaker. Ensure drawers are fully inserted.
Food not cooking evenly.Drawers are overfilled; food not shaken/tossed; incorrect temperature/time.Do not overfill drawers; ensure food is in a single layer. Shake or toss food halfway through cooking. Adjust temperature and time as needed.
White smoke coming from unit.Grease/oil residue from previous use; fatty foods cooking.Clean drawers and crisper plates thoroughly after each use. For fatty foods, ensure crisper plate is in place to elevate food.
Food not crispy.Too much moisture in food; drawers overfilled; insufficient cooking time/temperature.Pat food dry before air frying. Do not overfill. Increase cooking time or temperature. Ensure crisper plate is used.
Error message on display.Specific internal issue.Refer to the full user manual for specific error codes. If the issue persists, contact customer support.

Specifications

FeatureDetail
Model NumberDZ400EU
BrandNinja
Capacity9.5 Liters (2 x 4.75L independent drawers)
Power2470 Watts
Voltage240 Volts (AC)
Dimensions (L x W x H)27 x 41.5 x 32.5 cm
Weight8.8 Kilograms
ColorGrey
Special Features2 Independent Cooking Zones, 6 Cooking Modes (Air Fry, Max Crisp, Roast, Bake, Reheat, Dehydrate), Dishwasher-Safe Non-Stick Components, Digital Controls, Automatic Fan.
Control MethodDigital Control Panel
Country of OriginChina

Warranty and Customer Support

For information regarding your product's warranty, please refer to the warranty card included with your purchase or visit the official Ninja website. If you require further assistance, have questions about your product, or need to report a problem, please contact Ninja customer support.

Contact details for customer support can typically be found on the manufacturer's website or in the documentation provided with your appliance.

© 2026 Ninja. All rights reserved. Model DZ400EU.

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