Ninja 2023 Model #AF400

Ninja AF400 Max XL

Large 5.7L air fryer with 6-in-1 versatility and Max Crisp technology.

Overview

The Ninja AF400 Max XL offers a 5.7L capacity, 6-in-1 functions and Max Crisp for extra-crispy results with up to 75% less fat.

In-depth review

Everything you need to know about the Ninja AF400 Max XL

Ninja AF400 Max XL is a standout Air Fryers that has earned a solid reputation among owners. First introduced in 2023, it is now a mature, well-documented product. In this guide we break down its specs, parts, and common issues.

In short, Large 5.7L air fryer with 6-in-1 versatility and Max Crisp technology.

Setting up the Ninja AF400 Max XL

Ninja AF400 Max XL is ready to go almost out of the box. A short setup routine gets you to first use without fuss. For any hiccups, the fixes in this guide are a good first stop. Once it is running, Ninja AF400 Max XL largely looks after itself.

Design and build quality

In terms of build quality, the Ninja AF400 Max XL holds up well to regular use. The fit and finish are a step above many rivals. For most owners, this model is simple to set up and use. There is little to complain about in normal operation.

What the Ninja AF400 Max XL offers

Under the hood, the Ninja AF400 Max XL is defined by these figures.

  • The capacity_l: 5.7 L
  • Wattage_w: 1760 W
  • The presets: 6
  • Dishwasher_safe: 1
  • The digital_display: 1
  • Max_temp_c: 240 °C

Taken together, these details give a clear picture of what the Ninja AF400 Max XL can do.

Performance in practice

When you actually use it, the Ninja AF400 Max XL delivers solid, repeatable results. It handles the majority of jobs without fuss. Output is steady, and it keeps working without drama. That said, it is not without limits. Heavy or demanding workloads will push it to its edge. For everyday needs, this is unlikely to matter.

Replacement parts and consumables

Ninja AF400 Max XL relies on a handful of consumables and spares.

There are 6 documented parts that fit the Ninja AF400 Max XL, including filters, brushes, and other consumables.

  • Ninja AF400 Basket (part) — part #BSK-NINJA-AF400
  • The Ninja AF400 Crisper Tray (part) — part #TRY-NINJA-AF400
  • Ninja AF400 Filter (filter) — part #FIL-NINJA-AF400
  • The Ninja AF400 Max XL Heating Element (part) — part #HTR-NINJA-AF400-MAX-XL
  • Ninja AF400 Max XL Power Cord (accessory) — part #CBL-NINJA-AF400-MAX-XL
  • The Ninja AF400 Power Cable (accessory) — part #PWR-NINJA-AF400

Most of these parts are easy to swap out, which keeps the Ninja AF400 Max XL performing like new.

Keeping the Ninja AF400 Max XL in good shape

Ninja AF400 Max XL rewards owners who keep up with basic upkeep. Staying on top of the consumables will head off the majority of common faults. Swapping a worn part quickly protects the other components from strain. Looked after properly, the Ninja AF400 Max XL will last a long time. Use the resources above to keep it performing at its best.

Common errors and how to fix them

Owners of the Ninja AF400 Max XL most often run into the following issues.

Error e1

The fridge is not cooling correctly and shows E1, usually from a faulty temperature sensor or a blocked air vent.

Most owners fix it by:

  • Unplug the unit, let it cool, and remove grease buildup from the heating element and rear vents with a soft brush.
  • Check for airflow obstruction

The Sensor fault / E2 error issue

The temperature sensor is not reading correctly, causing the unit to stop heating or display an error.

To resolve this:

  • Unplug for 10 minutes, then plug back in and retry. This clears most transient sensor faults.
  • Replace the temperature sensor

Toothbrush won't turn on

The electric toothbrush does not turn on, often due to a dead battery.

The fix is usually:

  • Ensure the air fryer is plugged in and the outlet works.
  • Check the basket

Error not-heating

The hair dryer produces no heat, often due to a heating element or switch issue.

Most owners fix it by:

  • Ensure the air fryer is plugged in and the outlet works.
  • Check the basket

The Food not crispy issue

The air fryer does not crisp food, often due to overcrowding or temperature.

To resolve this:

  • Cook food in a single layer for even crisping.
  • Increase the temperature

For stubborn cases, professional service is the safest route.

What you get for the price

When you weigh what the Ninja AF400 Max XL offers against its price, it stacks up well. You are paying for a dependable, well-built product, not for marketing hype or gimmicks. Add in cheap consumables and simple upkeep, and the total cost of ownership is attractive. For most buyers, the Ninja AF400 Max XL represents money well spent.

The strengths and weaknesses

Like anything, the Ninja AF400 Max XL has its upsides and downsides. Its clear strengths are that it is straightforward, capable, and fairly priced. Where it falls short, it will not wow you with cutting-edge extras. For most people, the good clearly outweighs the bad. It is a safe, well-rounded pick.

Who should buy the Ninja AF400 Max XL

This model suits buyers who value reliability and straightforward operation. It may disappoint anyone expecting flagship-level extras. If you fall into the first group, the Ninja AF400 Max XL is easy to recommend. It does the basics brilliantly and keeps costs in check.

Buying considerations

If you are weighing the Ninja AF400 Max XL, it helps to think about a few things. This model works well for regular household tasks, and it holds up well over time.

It competes with the Ninja DZ201 Foodi Dual Zone, Philips HD9252/90 Airfryer XXL and the Cosori CP158-AF TurboBlaze, so check the alternatives before deciding.

Other models worth a look

Ninja AF400 Max XL is far from the only option. Your needs may point you toward a different choice. It is always worth comparing a few candidates before you commit.

Models most often compared with the Ninja AF400 Max XL are Ninja DZ201 Foodi Dual Zone, the Philips HD9252/90 Airfryer XXL and Cosori CP158-AF TurboBlaze, so the right pick depends on your priorities.

In the end, the Ninja AF400 Max XL holds its own against the competition. Its combination of price, features, and reliability is hard to beat.

Quick answers

Should I buy the Ninja AF400 Max XL?

In most cases, it is. Ninja AF400 Max XL offers a strong balance of price, performance, and reliability.

What is the lifespan of the Ninja AF400 Max XL?

With regular maintenance, the Ninja AF400 Max XL should last for years. Replacing consumables on schedule is the key to longevity.

Where can I find parts for the Ninja AF400 Max XL?

The parts section above is the best place to begin. They are generally in stock from major retailers.

Why does the Ninja AF400 Max XL show E1 / Temperature sensor fault?

The typical fix for E1 / Temperature sensor fault is Unplug the unit, let it cool, and remove grease buildup from the heating element and rear vents with a soft brush. Or Check for airflow obstruction.

What should I do about Sensor fault / E2 error?

Sensor fault / E2 error is usually resolved by Unplug for 10 minutes, then plug back in and retry. This clears most transient sensor faults. Or Replace the temperature sensor.

How do I fix Toothbrush won't turn on on the Ninja AF400 Max XL?

For Toothbrush won't turn on, start with Ensure the air fryer is plugged in and the outlet works. Or Check the basket.

Why does the Ninja AF400 Max XL show No heat?

No heat is usually resolved by Ensure the air fryer is plugged in and the outlet works. Or Check the basket.

What should I do about Food not crispy?

The typical fix for Food not crispy is Cook food in a single layer for even crisping. Or Increase the temperature.

What part does the Ninja AF400 Max XL use?

The Ninja AF400 Max XL uses the Ninja AF400 Basket, which is listed in our parts database.

Which part fits the Ninja AF400 Max XL?

A compatible part is the Ninja AF400 Crisper Tray, and it is easy to source.

Is there a filter for the Ninja AF400 Max XL?

You will need the Ninja AF400 Filter, available as a replacement part.

What part does the Ninja AF400 Max XL use?

A compatible part is the Ninja AF400 Max XL Heating Element, which is listed in our parts database.

Which accessory fits the Ninja AF400 Max XL?

The Ninja AF400 Max XL uses the Ninja AF400 Max XL Power Cord, and it is easy to source.

Is there an accessory for the Ninja AF400 Max XL?

You will need the Ninja AF400 Power Cable, which is listed in our parts database.

What is the capacity_l of the Ninja AF400 Max XL?

Expect a capacity_l of 5.7 L.

How much wattage_w does the Ninja AF400 Max XL have?

Its wattage_w is 1760 W.

What presets should I expect?

The Ninja AF400 Max XL has a presets of 6.

How much dishwasher_safe does the Ninja AF400 Max XL have?

Its dishwasher_safe is 1.

What is the digital_display of the Ninja AF400 Max XL?

Expect a digital_display of 1.

What max_temp_c should I expect?

Its max_temp_c is 240 °C.

Final thoughts

All things considered, the Ninja AF400 Max XL is a solid machine that most owners are happy with. If you are upgrading or buying new, the Ninja AF400 Max XL deserves a spot on your shortlist. Keep this guide handy for maintenance and repairs down the road. All told, the Ninja AF400 Max XL is a solid, trustworthy Air Fryers. It covers the essentials, holds up over time, and is easy to maintain. If you are undecided, the details above should make the choice clear. For the vast majority of buyers, the Ninja AF400 Max XL is a decision you will not regret.

Specifications

capacity_l
5.7 L
wattage_w
1760 W
presets
6
dishwasher_safe
1
digital_display
1
max_temp_c
240 °C

Replacement parts & consumables

Ninja AF400 Max XL Heating Element

Part

Replacement heating element assembly for the Ninja AF400 Max XL.

Ninja AF400 Max XL Power Cord

Accessory

Replacement power cord for the Ninja AF400 Max XL.

Ninja AF400 Basket

Part

Replacement air fryer basket for the Ninja AF400.

Ninja AF400 Crisper Tray

Part

Replacement crisper tray for the Ninja AF400.

Ninja AF400 Filter

Filter

Replacement air filter for the Ninja AF400.

Ninja AF400 Power Cable

Accessory

Replacement power cable for the Ninja AF400.

Errors & troubleshooting

E1 / Temperature sensor fault

The fridge is not cooling correctly and shows E1, usually from a faulty temperature sensor or a blocked air vent.

Sensor fault / E2 error

The temperature sensor is not reading correctly, causing the unit to stop heating or display an error.

Toothbrush won't turn on

The electric toothbrush does not turn on, often due to a dead battery.

No heat

The hair dryer produces no heat, often due to a heating element or switch issue.

Food not crispy

The air fryer does not crisp food, often due to overcrowding or temperature.

Compatibility

No compatibility information listed yet for this model.

Alternatives

Ninja DZ201 Foodi Dual Zone

Alternative

Dual-zone air fryer with two independent 3.8L baskets and Smart Finish.

Philips HD9252/90 Airfryer XXL

Alternative

XXL 7.3L air fryer with Rapid Air technology and Fat Removal.

Cosori CP158-AF TurboBlaze

Alternative

6L air fryer with 9-in-1 functions and 360° TurboBlaze airflow.

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