The appearance of the code i20 on the dishwasher display Electrolux indicates a critical malfunction in the water drainage system. The indication indicates that the drain pump cannot pump out liquid from the working chamber within the time interval specified by the program. Water remains at the bottom of the wash tank, and the wash cycle is forcibly interrupted or goes into emergency drain mode.
Ignoring this code often results in repeated startup attempts, which creates the risk of overflowing the pan and activating the system AquaControl. The owner must immediately stop using the device and carry out initial diagnostics. Most often, the problem lies in a simple clogged filter or a kink in the drain hose, but failure of the electronics or wear of the pump cannot be ruled out.
Timely elimination of the cause of the error i20 will avoid costly repairs and kitchen flooding. In most cases, the user can independently restore the functionality of the equipment by performing a series of simple procedures to clean the hydraulic path.
The main causes of the i20 code
The fundamental reason for the appearance of the indication i20 lies in the inability of the drainage system to provide the required pumping performance. The electronic control module detects the absence of a drop in the water level or an insufficient rate of decrease. This can be caused either by a mechanical obstruction to the fluid flow or by an electrical malfunction of the actuator.
Often the culprit is oneself drain pump. The pump impeller may have worn out, lost its magnetic properties, or received mechanical damage from a hard object. It is also possible that the contacts are stuck or the motor winding is broken, which makes starting impossible. In such cases, even if there are no blockages, water will not leave the tank.
Another common group of reasons are external factors affecting the patency of hoses. Bend of corrugated pipe behind the back wall of the cabinet or a clogged kitchen sink siphon creates back pressure. The pump simply cannot push water through the resulting plug. It is also worth checking the condition of the check valve, which prevents the backflow of water from the sewer.
If you hear a hum after turning on the machine, but the water does not drain, most likely the pump impeller is blocked by a foreign object.
Diagnostics and testing of the drain hose
The first step in restoring functionality Electrolux should be a check of external communications. It is necessary to move the dishwasher away from the wall and visually inspect the drain hose along its entire length. Any hinges, creases or squeezing by the furniture body must be eliminated immediately. Restoring the tube geometry often solves the problem without disassembling the equipment.
The next step is to check the connection location to the sewer system. If the hose is connected directly to the sink siphon, there is a high probability of contamination with fatty deposits. It is recommended to disconnect the pipe and blow it out, as well as clean the inlet hole in the siphon. A blockage in this unit creates the effect of communicating vessels, returning dirty water back to the machine.
- 🔍 Check that there are no kinks in the hose behind the rear wall of the housing.
- 🚿 Rinse the kitchen sink siphon with hot water to remove grease plugs.
- 🔌 Make sure that the lifting height of the drain hose corresponds to the instructions (no more than 1 meter).
- 🧹 Inspect the coarse filter at the entrance to the siphon, if installed.
It is important to consider the height of the drain path. If the hose is lying on the floor, a siphon effect occurs, and the water can spontaneously drain away during collection, which also provokes errors, although different ones. For models Electrolux It is optimal to create a lifting loop at a level of 60-80 cm from the floor before descending into the sewer. This prevents reverse current and ensures correct operation of the level sensors.
Cleaning the filters and inner chamber
The most common reason why the code comes on is i20, is a simple clogging of the filtration system. At the bottom of the washing chamber there is a set of filters that retain food residues. If they are not cleaned regularly, a dense layer of plaque will form, which will block the flow of water to the drain hole and the pump.
To clean, you need to remove the lower basket and unscrew the central fixing element. Carefully remove the strainer and wash it under strong running warm water using a brush. Pay special attention to the fine mesh - it is this that becomes clogged with small particles and fat, turning into an impermeable membrane.
⚠️ Warning: Never use metal brushes to clean nylon filters as they can damage the mesh, causing debris to get into the pump.
After removing the filters, inspect the opened drain hole. Bones, toothpicks or glass shards often end up there. Remove visible debris with your hands or tweezers. Check the condition of the rubber seal under the filter - it should fit tightly, preventing untreated water from seeping into the drain.
☑️ Filter cleaning checklist
Checking and servicing the drain pump
If the external hoses are clean and the filters are washed, the problem lies deeper - in the drain pump. You will need to remove the dishwasher to access it. Electrolux, lay it on its side (after securing the door with tape) and remove the lower protective panel. The pump is usually located at the front or center of the sump.
Before removing the pump, it is necessary to drain the remaining water from the pan using a syringe or sponge. Then the power terminals are disconnected and the pump housing is unscrewed. A visual inspection of the impeller often reveals stuck objects: coins, buttons or bones. Removing them can instantly revive the unit.
| Symptom | Possible reason | Solution method |
|---|---|---|
| The pump hums, but does not pump | Impeller jammed | Disassemble and clear of debris |
| Complete silence when starting the drain | Broken winding or burned out module | Pump replacement or board repair |
| Weak water pressure | Impeller wear or blockage | Replacing the pump or cleaning the hose |
| Intermittent operation | Faulty sensors or wiring | Electrical circuit diagnostics |
If mechanical damage to the blades or pump body is detected, the only way out is complete replacement of the unit. It is not economically feasible to repair the sealed pump block. When installing a new component, make sure that the connectors are connected correctly and that there are no distortions during installation.
Diagnostics of electronic module and wiring
In rare cases, an error i20 may indicate a malfunction of the control board or an open circuit in the pump power supply. If, when starting the drain program, there is no voltage supplied to the pump, you should “ring” the wires going from the module to the pump with a multimeter. Oxidation of contacts in connectors due to high humidity is a common occurrence in older machines.
It is also worth checking the integrity of the fuses on the control board. A power surge in the network could damage the element responsible for switching powerful consumers, which include the drainage motor. A visual inspection of the board may reveal blackened traces or swollen capacitors.
⚠️ Attention: Carry out all work with the electronic module and electrical circuits only after completely disconnecting the device from the power supply to avoid electric shock.
If you do not have skills in working with electronics, it is better to entrust board diagnostics to specialists. Independent soldering or replacement of components without the appropriate equipment can lead to permanent failure of the equipment. Some models Electrolux The module needs to be re-flashed for the new sensors to work correctly.
The secret to resetting the error
Sometimes the i20 error remains in the memory even after the problem has been resolved. For a complete reset, try holding down the "On/Off" button and the program selection button simultaneously for 5-7 seconds. If this does not help, unplug the machine for 15-20 minutes.
Prevention and operating rules
To code i20 will never appear on your dishwasher screen again Electrolux, it is important to follow simple operating rules. Regularly cleaning filters after each cycle or at least once a week will prevent 90% of all drainage problems. Do not allow fat deposits to accumulate.
Be sure to remove large food residues before loading dishes. Although modern machines are equipped with shredders, large bones, toothpicks and films from bags can easily bypass the blades and get stuck in the pump. Using special all-in-1 tablets also helps dissolve fats, keeping the internal pipes clean.
- 🧼 Once every 2-3 months, run a washing cycle with citric acid or a special product for cleaning cars.
- 👀 Before each cycle, check the cleanliness of the filter system.
- 🚫 Do not wash items that can crumble (wood, thin plastic) in the dishwasher.
- 🔧 Once a year, check the condition of the drain hose for hardening.
Following these recommendations will extend the service life drain pump and maintains cleaning efficiency. Remember that prevention is always cheaper than replacing expensive components or calling a technician. Taking good care of your equipment is the key to its long and trouble-free operation.
Main conclusion: 8 out of 10 cases of i20 error are solved by simply cleaning the filters and checking the drain hose without calling a technician.
Is it possible to ignore the i20 error and continue to use the car?
Strongly not recommended. Continued use will cause water to remain in the tank, causing bacterial growth, unpleasant odors, and corrosion of internal components. In addition, the next time you start the machine, it will again try to drain the water, overheating the pump, which can completely damage it.
Why does error i20 appear immediately after turning on?
This means that the pan already contains water from the previous cycle, which the machine was unable to pump out. The self-diagnosis system checks the fluid level at startup, and if it is higher than normal, it immediately issues an error code, blocking the start of a new program.
How can you tell if the drain pump has completely burned out?
If, when starting the drain mode (for example, through a test program), the pump is silent, and the multimeter shows the presence of voltage at its terminals (220V), then the pump motor is faulty and requires replacement. If there is no voltage, the problem is in the control module or wiring.
Does water hardness affect the appearance of error i20?
Indirectly - yes. High water hardness leads to rapid scale formation not only on the heating element, but also on the moving parts of the pump and in the narrow channels of the drain system. This reduces cross-country ability and increases the load on the engine, accelerating its wear.