Problems in AEG Favorit dishwashers: errors and solutions

An AEG Favorit that leaves food residue, won’t drain, or stops halfway through a cycle usually gives warning before it fails completely. The symptoms are usually clear: beeps, flashing lights, water left in the tub, cold dishes, or a door that seems closed but doesn’t actually lock the program. In most cases, the source lies in three very specific areas: water inlet, drainage, and safety sensors.

The good news is that many of these incidents follow a fairly recognizable logic. In this range, the i10, i20, i30, i40, i50, i60, and iF0 codes usually point to the exact source of the problem, making it possible to distinguish between a simple blockage, a real leak, or a fault in components such as the pump, heating element, or pressure switch. If you have a problem with your dishwasher, you can use our free error codes search tool. From there, you can find out about and solve all errors easily and effectively.

How faults appear in the Favorit range

AEG Favorit dishwashers do not usually fail silently. When something goes wrong, the appliance usually translates it into a very specific combination of signs: the program won’t start, the tub is left with water at the end of the wash, the display shows a code, or drying becomes poor even though the cycle seems complete. That symptom pattern helps a lot, because it avoids guessing and makes it possible to pinpoint the source of the problem in just a few minutes.

In newer models, fault reading is almost immediate thanks to the error codes. On Favorit models without a display, the appliance uses flashes or beep sequences, a kind of basic but useful language. A single flash usually points to water inlet; two repeated signals to drainage; several alarms in a row to a leak or a control system that has detected a safety anomaly. That grammar may seem cold, but in practice it avoids unnecessary dismantling.

There is another detail worth not overlooking: the dishwasher’s behavior changes a lot depending on the stage at which the fault occurs. It is not the same if the appliance does not respond when you press start, if it stops once it has already filled with water, or if it completes the wash but leaves steam and damp dishes behind. Each phase of the cycle leaves clues, and reading them carefully saves time, money, and many false suspicions about parts that still work.

The most common codes and what they usually mean

Code i10 points to a water inlet problem. The usual causes are a partially closed tap, low household water pressure, a kinked hose, or the inlet filter clogged with limescale or dirt. It can also appear if another appliance is using water at the same time and the pressure drops too much. Before thinking about a complex fault, it is worth checking the supply, the hose, and the small filter located at the inlet connection.

i20 and the equivalent C2, F2, or AL6 codes refer to drainage. Here the dishwasher has detected that the water is not draining normally, something usually linked to dirty filters, a pump blocked by shards of glass or bones, a bent outlet hose, or a poorly executed siphon installation. The tub may be left with a puddle of cloudy water, and the appliance may even stop the program to avoid overflow or greater damage. In practice, this is one of the most common faults and also one of the easiest to diagnose.

i30 is usually the sign of an internal leak or an activated anti-overflow system. When the appliance detects water where it should not be, it shuts down to protect the electronics and prevent damage in the kitchen. Sometimes the problem is visible, with water at the base or on the floor; other times it is hidden under the frame or at a hose connection. i30 deserves respect: it is not a cosmetic warning, but a real protection measure.

i40 is associated with the level or pressure sensor. That component measures how much water is inside and when it should move from one phase to the next. If it gets dirty, clogged, or sends erratic readings, the dishwasher may think it has not filled, has overfilled, or that the cycle should not continue. It is a tricky fault because it can look like an electrical issue when, in reality, there is an internal information problem.

i50 points to the pump or washing motor. Here the water may enter and leave normally, but the spray arms do not get the pressure needed to clean. The result is lukewarm dishes with stuck-on dirt and a strange humming sound in the lower part of the appliance. If the motor sounds strained, starts and stops, or the program takes longer than normal without improving results, suspicion falls on this part.

i60 has to do with heating. In a dishwasher, temperature not only helps break down grease; it also improves drying and stabilizes the cycle. When the water does not reach the expected temperature, the dishes come out cold and damp, and the machine may extend the wash or stop with a warning. It is usually related to the heating element, a thermal sensor, or the wiring that powers the heating system.

iF0, for its part, usually indicates an incorrect water level. It does not always mean a serious breakdown; sometimes it is enough to correct the supply, clean the filter, or reset the appliance. But it can also be the prelude to an erroneous reading by the control system. That is why it should be interpreted as a balance warning, not just as a number on the display.

What to check first without dismantling half the appliance

Basic cleaning remains the first barrier against almost all faults in the Favorit series. A filter loaded with grease, peelings, seeds, or label fragments can slow water circulation and trigger errors that seem electrical. The inside of the dishwasher works like a small hydraulic network: if one passage narrows, the rest suffers from the pressure. Checking the filter, the sump, and the lower spray arm often reveals more than it first appears.

It is also worth observing the inlet hose. A curve that is too tight, a pinch behind the cabinet, or a mesh filter with limescale can be enough for the unit not to fill properly and to trigger a water supply warning. In areas with hard water, limescale acts like a slow crust, almost invisible at first, but enough to alter such a sensitive system. When the pressure arrives only just in time, the machine may still start, although with poor and erratic performance.

The same thing happens with drainage. The drain hose must not be pinched or placed too low, and the sink trap should be clear. An installation error can mimic a pump fault. The difference between an expensive repair and a simple adjustment often lies in those few centimeters of hose or in a plug that was not removed after installation. This kind of detail, as domestic as it is decisive, comes up frequently in faults that look serious.

The door also deserves attention. If the latch does not engage properly, the dishwasher may detect that conditions are not safe to start the cycle. On some Favorit models, closing it more firmly, hearing the lock click, and starting the program again is enough. When the latch is worn, or the hinge has sagged, the fault can repeat intermittently and confuse the user, because sometimes the appliance accepts the start and other times it does not.

When the problem is with the water, not the electronics

Water inlet and outlet account for a huge share of issues in these machines. It is a common mistake to blame the board or control panel first, when in reality the dishwasher is reacting to a very physical bottleneck: not enough water enters, or it does not leave in time. That behavior is almost mechanical, like a blocked artery in a system that needs continuous flow to wash and drain.

A very common case is food debris ending up in the internal filter. At first glance it seems harmless, but it sticks to the grilles, reduces water flow, and forces the pump to work harder. If the pump draws air, if the rotor meets resistance, or if dirt reaches the spray arm, washing loses power and drying worsens. At that point, the appliance may still run, but it no longer works with the precision intended by the factory.

Domestic water pressure also matters more than it seems. If you open a tap and barely any water comes out, the dishwasher will not perform well. In shared installations, the washing machine, boiler, and dishwasher may compete for a supply that does not always keep up. The kitchen, in these cases, shows its most practical side: a modern appliance depends on a very specific network, and if that network falters, technology loses effectiveness even if the unit itself is in perfect condition.

Signs of a leak and why you should not ignore them

Internal leaks are never a minor issue. In the Favorit range, the protection system stops the cycle as soon as it detects water in the base or an abnormal level in the lower tray. That decision protects the electronics and reduces the risk of flooding, but it also makes it clear that simply restarting the appliance is not enough. If there is water under the tub, you need to find out where it comes from: a gasket, a hose, a pump, a seal, or a loose connection.

The most treacherous scenario is a slow leak. It does not wet the floor in an obvious way, does not leave a dramatic puddle, but it does activate the safety sensor intermittently. The dishwasher works sometimes and not others; the error appears and disappears; the user thinks the problem has fixed itself. In reality, the appliance is warning that water has found a path where it should not exist.

The wear of plastic parts and rubber seals must also be considered. Over the years, heat, limescale, and detergents weaken materials that at first seem solid. A small crack in a duct or a misaligned door latch can create an almost imperceptible drip. The age of the appliance matters, not only because of use, but because of how its seals and connectors age in humid environments with varying temperatures.

Poor drying, cold dishes, and other misleading symptoms

Not every visible problem is a serious fault. Poor drying can be due to a dirty filter, poorly loaded dishes, or the way the cycle itself has managed the temperature. On AEG Favorit models with AirDry technology, the door opens slightly at the end to encourage natural drying. If the installation is not correct or the cavity ventilation is poor, that system will not perform as it should and the dishes will come out wetter than expected.

Glassware and plastics usually reveal these shortcomings before the rest. When the interior is clean but the glasses are still cloudy, the issue may lie with the rinse aid, the wash temperature, or how the load is arranged. An overcrowded rack prevents air from circulating and blocks the water jets in critical areas. The result is somewhat misleading: it seems as though the dishwasher washes less effectively, when in reality it is being used poorly.

Another common symptom is a persistent smell. Grease trapped in filters, seals, and corners of the tub creates a film that eventually affects performance. That smell is not only unpleasant; it also foreshadows a buildup of residue that can lead to slow drainage, clogged spray arms, and less even washing. Maintenance here is not about appearance; it is a way to preserve the appliance’s hydraulics and extend its service life.

Which Favorit models usually share this behavior

The diagnostic logic is repeated across much of the AEG Favorit family. Even if the width, panel shape, or basket layout changes, the fault structure is usually similar. Built-in, freestanding, and compact versions share very similar water inlet, drainage, sensor, and safety systems, so the same symptom can have the same origin in several different chassis.

That explains why certain patterns repeat in units years apart. An older Favorit may show a filling problem and a newer one may display an equivalent code, even if the interface is different. The language changes, but often the cause does not. That is the real value of understanding faults by function and not just by appearance: it allows you to read the appliance better without relying exclusively on the exact model.

On models with advanced features, such as floor-time indicators or automatic programs, diagnosis can be even more visual. A red light during the cycle and a green one when it finishes are not decoration; they help distinguish normal operation from an alert. When that sequence is interrupted, the user already has an early clue even before checking the manual. The modern design of these dishwashers is more elegant, yes, but also more expressive.

When it is time to stop insisting and call a technician

Some faults can be solved with cleaning and basic home checks, while others require disassembly. If the error returns after cleaning filters, checking hoses, confirming the tap, and resetting the appliance, it is wise to stop. The same applies if you notice a burning smell, hear abnormal humming from the base, or see water in the lower tray after every cycle. At that point, we are no longer talking about a simple blockage, but about a cause that may involve the pump, heating element, wiring, or a hidden leak.

Any anomaly affecting the wiring or electrical supply also deserves attention. A blown fuse, a socket without power, or a damaged plug can mimic a dishwasher fault, but the check must be done safely. Forcing the appliance or repeatedly resetting it without fixing the cause does not help. In appliances of this type, the persistence of the error is a technical clue, not an anecdotal detail.

The boundary between maintenance and professional repair is often marked by repetition. If the fault appeared once due to dirt and then returned, if drainage works only sometimes, or if the machine fills with water but does not get past prewash, there is more going on than a single blockage. The technician not only replaces parts; they also interpret the sequence, which often separates a correct intervention from a chain of unnecessary replacements.

What an AEG Favorit reveals when it starts to fail

A dishwasher does not fail suddenly as often as it seems. Before it stops completely, it often changes rhythm, takes longer, leaves moisture behind, makes more noise, or requires several start attempts. In an AEG Favorit, these changes are like the appliance’s internal press: small statements that anticipate the headline. The attentive user can read them in time and prevent a dirty filter from becoming a blocked pump, or a minor leak from becoming major damage.

The practical value lies in recognizing that water, pressure, temperature, and sealing form a system. When one part of that set is out of balance, the whole cycle suffers. That is why the most common problems are not random or mysterious: they usually respond to quite specific causes that repeat, season after season, in kitchens with the same usage pattern and irregular maintenance.

The best way to read these faults is by combining observation and caution. Checking the basics helps a lot; insisting when there are signs of a leak, motor trouble, or heating issues enters professional territory. A well-maintained AEG Favorit offers years of service with stable behavior, but when it starts sending warnings, it is worth listening carefully. In those brief messages, sometimes silent and sometimes bright, lies almost always the full explanation of what is happening.