Xiaomi air fryer E1 error: what to do safely

The E1 code on the 3.5-liter Xiaomi Mi Smart Air Fryer indicates an open circuit in the temperature sensing system: the controller is not receiving the sensor signal correctly. The sensor or its connection may be responsible, but the warning alone does not identify the faulty part. Stop cooking, switch the air fryer off and unplug it safely. If the message remains after the appliance has cooled down and been switched on again, it needs professional diagnosis.

If you have a problem with your air fryer, you can use our free error code finder. There you can identify and resolve errors easily and effectively.

The air fryer has lost an essential signal

The heating element generates heat and the fan circulates it around the food, but neither component is enough to control cooking on its own. The appliance also needs to know the temperature inside. A sensor supplies that information; when its signal is interrupted, the electronics lose a reference needed to regulate heating.

In this context, an open circuit means there is a break in the electrical path used to obtain the reading. It does not automatically mean the heating element has burned out or that there is a problem with the household power supply. Nor does it prove that the air fryer has become excessively hot: the fault concerns the reading and does not, by itself, establish overheating.

This distinction matters because it affects the repair. A damaged sensor can trigger the warning, but so can a break in its connection. Buying a sensor simply because E1 appears turns a reasonable suspicion into a diagnosis that has not yet been made. The code points toward a particular circuit, not one definitive replacement part.

On the 3.5-liter Mi Smart Air Fryer, E2 relates to a short circuit in the sensor circuit, which is a different condition. Both messages concern temperature monitoring, but they do not describe the same fault. This table distinguishes them without extending their meanings to other ranges or suggesting that users should perform internal checks intended for a professional.

The MAF02 model number defines the scope of diagnosis

The E1 disassembly and diagnostic cases described for this fault concern the 3.5-liter Xiaomi Mi Smart Air Fryer MAF02. This is a specific model, not a generic name for every air fryer from the brand. Identifying it prevents information from being mixed up between appliances that look similar or share a product name but may use different components.

The MAF02 has a rated power of 1,500 W and an adjustable cooking range of 40 to 200 C. These details help identify the product, although they cannot be used to select a sensor. Capacity, power and operating range do not describe every characteristic of the circuit that measures temperature.

Check the model number on the appliance identification label or in its documentation, with the air fryer unplugged and cold. There is no need to remove any casing to find it. Before moving the appliance, remove the basket and avoid tilting it while it contains hot grease or food that could spill.

If the appliance is another Xiaomi model with a capacity of 4, 6 or 6.5 liters, check the message against its own manual or the relevant support information. A matching code does not guarantee technical equivalence. It also does not justify fitting a sensor used in a MAF02 simply because the connector or shape looks similar.

What you can check without removing a single cover

Checks at home have a limited scope, but they can rule out obvious usage problems without exposing you to internal components. With the appliance switched off, unplugged and completely cold, inspect the visible condition of the cord and plug. If there is distortion, scorching or damaged insulation, do not plug it back in.

The basket should slide into place properly, with no food or accessories obstructing it. Overloading can prevent correct closure and affect airflow, although it does not establish the cause of E1. Correcting the load removes a separate issue; it does not repair a broken sensor circuit or confirm that the warning was merely a seating problem.

You can also check that accessible air inlets and outlets are not blocked by objects or surface dirt. Follow the manual when cleaning, without pushing tools through vents, soaking the appliance body or reaching into internal areas. Clean the basket and removable accessories as instructed and allow them to dry before putting them back.

Once everything is cold, dry and apparently in good condition, switching the appliance on again allows you to see whether the message remains. This check does not require repeatedly starting cooking programs. If E1 stays on or returns, you have reached the limit of checks at home: repeatedly unplugging and reconnecting it will not locate the fault.

A reset does not prove that the fault has gone

Cooling down can change how an intermittent fault behaves. Diagnostic accounts of this problem have described sensors with breaks that are not continuously present. For that reason, seeing the menu return after unplugging the appliance does not prove that the circuit has been repaired.

The roughly 30-minute wait sometimes suggested for an air fryer that will not turn on because it may be too hot is not a specific procedure for resolving E1. There is no universal waiting period that restores a damaged sensor. The practical requirement is to let the appliance cool completely while always following its manual.

If the warning appears when heating begins or after several minutes, that timing is useful information for the technician. There is no need to reproduce it deliberately. A photograph of the display and a description of what happened during normal use can document the intermittent nature of the problem without putting the air fryer through further test cycles.

Once E1 has returned, it is not sensible to finish a recipe by lowering the temperature or shortening the time. Program settings still depend on a reliable reading. A lower cooking setting cannot replace the sensor, and the outside appearance of the food cannot establish whether the appliance is regulating temperature correctly.

The NTC sensor and the 200-kilohm figure

The sensor mentioned in MAF02 diagnostic accounts is an NTC type. These initials describe a component whose electrical resistance decreases as its temperature rises. The electronics interpret that change to estimate the heat inside. In everyday terms, the sensor converts temperature into an electrical signal that the controller can use.

Published checks for this model refer to a sensor identified as 200 kilohms, also written as 200 kΩ. That figure needs context: an NTC sensor’s resistance changes with temperature, and its nominal value is defined under specified conditions. Without the corresponding specification, 200 kΩ is not a required reading in every situation.

The figure should not be confused with the range selected on a measuring instrument, either. The multimeter range determines how a measurement is displayed; it does not identify the component or establish compatibility on its own. For the user, the figure provides diagnostic context, not instructions to open the air fryer and test it at home.

A replacement sensor must suit the exact appliance model, its working conditions and the response expected by the electronics. A shared nominal value is not enough. Its behavior as temperature changes, insulation, construction and intended mounting also matter, and these cannot be established from a sales photograph.

Buying a generic NTC sensor too quickly may leave the fault unresolved or introduce an incorrect reading. Before purchasing parts, it is more useful to confirm the source of the open circuit and the replacement’s compatibility. That verification belongs to the repair provider carrying out the work, rather than an assumption based solely on the number 200.

Working inside takes more than recognizing a component

Professional diagnosis needs to distinguish between a broken sensor, a defective connection and a problem in the circuit interpreting the signal. The E1 display cannot separate these possibilities. It therefore does not justify replacing the control board straight away, just as it does not automatically confirm that the sensor needs replacement.

The fact that the appliance switches on, the control knob works or the display responds does not rule out a temperature reading problem. These are different functions. Equally, the E1 message does not mean that all the electronics have stopped working. An accurate assessment must locate where the signal is being lost before deciding what to repair.

Disassembly guides may show covers, connectors and the sensor’s location beside the heating area. Seeing these parts does not make the job safe for household users. Removing the casing exposes electrical components and may affect insulation, fasteners or the positioning of parts that operate at high temperatures.

Do not bypass sensors, replace them with resistors to hide the warning or apply flames or external heat sources to test them. Such practices can remove information needed by the controller or damage the assembly. Internal measurements and component replacement belong to an authorized technician with suitable equipment and documentation.

The app cannot repair an interrupted signal

The MAF02 supports connected functions through Xiaomi Home, but temperature sensing takes place within the appliance itself. Weak Wi-Fi, an unlinked account or a closed app are separate issues. Resetting the network cannot repair an open circuit in the sensor or correct a defective electrical contact.

For that reason, deleting the app or reconfiguring the router should not be the main response to E1. It can take time and remove settings without bringing the diagnosis any closer. The code should be interpreted as a temperature system warning on this range, not as a communication problem with the phone.

The same distinction applies to other common symptoms. A basket that will not fit, fan noise or grease deposits each need their own assessment; none establishes the cause of the message on its own. Several problems can occur together without sharing a cause, and resolving one does not guarantee that the temperature fault has been eliminated.

Heavy smoke, an electrical burning smell or visible damage changes the priority: stop using the appliance and unplug it if this can be done safely. Do not keep resetting it to see whether E1 disappears. Under these conditions, a technical inspection needs to assess the appliance as a whole before it is used again.

A well-documented inspection avoids guesswork

When requesting an assessment, it helps to have the exact model, serial number, a photograph of the message and a description of when it appeared. Also note whether it happened after cleaning, appeared when cold or during cooking, and whether it returned. Observed facts are more useful than an assumed diagnosis borrowed from a different appliance.

If warranty coverage may apply, check its terms and consult the seller or official support before authorizing outside work. Opening the appliance yourself may complicate an assessment of what caused the damage. Do not assume that any intervention voids all coverage, but do not assume it is irrelevant to the claim either.

The available information about this fault does not establish a reliable repair price. The amount depends on the component actually affected, labor and the diagnostic provider’s terms. A useful estimate should explain what is included and how assessment is charged, without assuming that a callout or diagnostic fee will automatically be deducted from the repair.

Deciding between repair and replacement requires that estimate, along with the appliance’s overall condition and age. A localized fault is not assessed in the same way as several accumulated problems. The total cost and scope of the repair offer a more useful comparison with a new appliance than the standalone price of a sensor advertised online.

Cooking again means restoring temperature control

After work has been carried out, the goal is not simply to remove two characters from the display. The repair must restore a consistent reading and the intended operation of the temperature control system. The professional should perform the necessary checks before returning the appliance to use, especially when the fault was intermittent.

Until then, food left partly cooked should be finished in another suitable appliance, following safe storage and cooking practices. It cannot be assumed to be ready because the air fryer had been running for a certain amount of time before the warning. Elapsed time does not guarantee the temperature reached, particularly at the center of thick pieces.

Once the problem has been resolved, accessible cleaning and use in accordance with the manual remain important, although they cannot guarantee that a sensor will never fail. Keeping ventilation clear and preventing liquid from entering the appliance body protects normal operating conditions. It does not replace a repair once an electrical interruption has been detected.

The practical boundary is clear: checking the exterior, cleaning permitted areas and observing a fresh startup can be done without dismantling anything. Locating and repairing the open circuit requires professional work. With a persistent E1 on the MAF02, stopping repeated cooking attempts avoids mistaking a temporary disappearance of the warning for a genuine recovery.