Electrolux air conditioner error codes: how to decipher fault codes and fix them

Climate control systems of the Swedish brand Electrolux for home or industrial use are of high quality and reliability. But sometimes errors appear on the display of the indoor unit of the air conditioner; it is not clear what to do in such situations.

Should I immediately contact the service center? Perhaps your own knowledge, skills, and tools will be enough to fix the breakdown. In any case, you must first decipher the error codes of the Electrolux air conditioner, understand the reasons for their occurrence, and then make a decision.

In this article we will look at how the self-diagnosis system of air conditioners of this brand works. Let's get acquainted with common errors and ways to eliminate them. We will find out the meaning of rare malfunctions and the procedure to act in such situations, and also figure out what to do to prevent the appearance of messages about breakdowns.

Self-diagnosis system for Electrolux air conditioners

Structurally, air conditioners are quite complex devices.Inside the blocks there are refrigeration circuits, control boards, various sensors, valves, power inverters and other parts.

The self-diagnosis system, a service system, is a type of software, designed to report incorrect operation of individual elements and components of equipment. It is implemented into the control unit using the “firmware” method.

The abundance of device components prompted the development of a device self-diagnosis system, which identifies errors in operation and displays them in the form of codes

An alphanumeric message may indicate that the device is not installed correctly or that it needs to be cleaned or refilled.

It also happens that the main working units fail or worn parts need to be replaced.

But depending on the complexity of the split system and the number of controlled functions, decoding the codes takes one or more printed pages. Each series of company devices can have its own firmware.

The malfunction is determined by comparing the error code with the table, which is presented in the instructions for a specific model or on the manufacturer’s official website

To activate the self-diagnosis process, you need to simultaneously press on the remote control TEMP And MODE.

If troubleshooting requires only maintenance and cleaning without dismantling, you can handle it yourself. Complex breakdowns that require removal, disassembly of the device and replacement of parts are best left to a specialist.

Sometimes you may encounter multiple errors in the operation of Electrolux air conditioners. In such cases, codes of serious breakdowns are determined, and as they are eliminated, messages about other errors may appear.

The user can carry out a number of simple operations himself:

• clean and replace filters;
• unlock the blinds by removing foreign objects;
• restore normal power supply.

The participation of a certified specialist requires a refrigerant leak, a breakdown of the compressor, electric motor, or electronic control system.

Reasons for protection activation (E1-E9)

The consumer options for all air conditioners are approximately the same, but the functions of protection against adverse external conditions and improper operation are different.

In this case, the protective mechanism of Electrolux air conditioners is activated and automatically turns off the device. You can resume operation of the device after 3 minutes. after shutdown.

The protection is triggered if external and internal conditions do not correspond to the parameters given in the table. This table is in the instructions for the device.

Reason #1 - high or low blood pressure

The operation of the device is maintained by a certain pressure in the system. The agent is freon. The level is controlled by two sensors - high and low pressure.

Low pressure indicates a lack of refrigerant, premature throttling, a weak evaporator or expansion valve. High indicates overcharge, weak condenser, fugitive gases, high outside temperature

Error E1 on the display means that the high pressure sensor has tripped due to freon charging above normal.

Message E3 signals low pressure, i.e. insufficient amount of freon in the system. In this case it is required recharging the air conditioner with refrigerant.

But there may be other reasons and only a specialist should deal with them.

If the pressure meters themselves are broken and need to be replaced, errors will appear Fc And Fd.

Reason #2 - freezing of the indoor unit

If the air conditioner does not have frost protection for the indoor unit, ice may appear on the valves, surfaces of copper pipes, and heat exchanger. The device will begin to blow snow and frost.

Only a master can fix such breakdowns. Independent intervention can aggravate the situation and lead to the irreparable - making repairs impossible

Error E2 prevents such developments and turns off the device in time, but reports the problem. To get a complete picture, it is necessary to inspect the external unit.

Most often, the formation of ice is caused by pollution:

• filters;
• fan impellers;
• evaporator surface of the heat exchanger.

It would also be a good idea to check for any obstructions in front of the machine or in areas where air enters. This happens when the device is placed in a niche.

The air intake vent must be kept clean and open. It should not be covered with decorative elements or slabs.

If the problem is contamination of parts or the presence of obstacles in the air conditioning system, it is possible to fix all this yourself.

But freezing of the indoor unit is sometimes associated with:

• problems on the control board;
• breakdown of sensors, thermostatic valve;
• lack of freon;
• capillary tube clogged.

In such cases, a master will help. It is also worth paying attention to the compliance of the type of device with the operating conditions. Some models are not designed to work in cold weather unless winterized.

Reason #3 - fuse trips

The air conditioning compressor is an expensive part, so it needs to be monitored even if a breakdown is suspected. run diagnosticsto discover the cause of its occurrence.A significant part of these elements cannot be repaired and require replacement.

What does the error indicate? E4? Most often, it is said that a small amount of refrigerant provoked a situation when an insufficient amount of oil entered the compressor crankcase. At the same time, it overheats and the discharge temperature rises. A significant freon leak also leads to air entering the refrigeration circuit.

When a compressor-related code appears, it is important to diagnose it. If you limit yourself to refueling, installing a filter, or eliminating leaks without additional inspection, the part will soon fail

What actions should the master perform? Analyze the condition of the oil. Check the tightness of the refrigerant circuit and the presence of moisture in it. Carry out additional diagnostics of the system.

Reason #4 - Overcurrent

Compressor current is an indicator of a number of system faults. A reduced current indicates that the compressor is operating without load. This means that freon has leaked.

But it's a mistake E5 indicates increased current. This happens when liquid rather than gaseous refrigerant is supplied to the compressor inlet. The breakdown is caused by too low an outside air temperature or dirty filters in the indoor unit.

Other signs indicate the need to clean the filters: unpleasant odors, extraneous noise during operation of the device, a drop in power, an increase in energy consumption

To eliminate the error, you need to check the compliance of the outside temperature with the minimum permissible values ​​in the device passport. And also clean the filters.

Reason #5 - communication line failure

Code E6 indicates an error in connecting system components.For example, there is no connection between the outdoor and indoor units.

You need to check all the connectors, but before that don’t forget:

• turn off the network power;
• wait 3 minutes;
• make sure the rotation of the fan impeller stops.

If the error does not go away, you should disconnect the interconnect wire, connect it with a separate line to check and measure the voltage on the line. Then compare the obtained values ​​with the reference ones. It is also advisable to check the fuses and thermal fuses.

Reason #6 - conflict of installed modes

If several indoor units are operated, one of them is determined as the master, the rest - as subordinates. When the mode is activated MASTER/SLAVE the equipment operates according to the parameters that are set on the main wired remote control and switching also occurs on it.

Error E7 appears when the main mode is set to one mode, and the slave mode is turned on in another, for example, heating and cooling or dehumidification; cooling and heating.

When the main wired remote control is turned off or set to "Ventilation" mode, the system will operate according to the parameters set from the sub remote control

If several wired control devices are turned on at the same time, the system determines as the main one the block that will produce the minimum value of the number (address).

To eliminate error E7, it is enough to correctly coordinate the blocks with each other and set the correct modes.

Reason #7 - indoor unit fan overload

The rotation of the fan blades creates an air flow that passes through the evaporator tubes. If there is no cold air, this may be caused by a broken fan. Error E8 reports a short circuit, a break in the line or a faulty part.

To diagnose, do the following:

• remove the top cover;
• check the impeller and motor;
• inspect the blades for damage;
• We make sure that there is no blockage by foreign objects.

To check the freedom and ease of rotation of the blades, we turn them by hand. If the shaft with the impeller does not rotate or rotates with difficulty, the cause of the breakdown is hidden in the burnt out stator winding.

The service life of the motor is usually longer than the device itself, so the part rarely fails. There is always a diagram on it and testing will be needed here

It happens that a capacitor or other circuit element requires replacement. Only a specialist can carry out a complete diagnosis.

Reason #8 - overflow of the drainage bath

The drainage pump is used to condensate drainage to the street or to the sewer. This is a built-in unit that corresponds to the functions of the system and its operating conditions.

The device is a structure consisting of a float, a container, a motor and a tube for draining liquid. The element has a large resource, so it rarely breaks

Error E9 appears when the drainage bath overflows. In this case, the device stops working for cooling, the condensate must be drained manually.

The reason for this need may be the accumulation of aggressive substances or ordinary pollution. It is useful to clean. If the problem cannot be solved, we call a specialist.

Temperature sensor failures (F)

The sensors are usually semiconductor thermistors. Simple models of Electrolux air conditioners have two such elements; smart devices have more of them.

Temperature sensors - components that record indicators in certain places outside or inside the system and transmit information to the control unit

According to the data received, an adjustment is made: the motor-compressor works actively, moderately, or turns off, producing an error code.

The following temperature detection sensors are installed in the indoor unit:

1. Room air. Sets compressor operating parameters. Error F0.
2. Evaporator (located at the midpoint of the element). Turns off the compressor if the evaporator temperature drops below zero to prevent icing of the latter. The code is displayed F2.
3. At the inlet and outlet of the evaporator. Gives errors F1 And F3.
4. Fan motor. Turns off the engine in case of overheating to prevent fire.
5. Fuse in terminal block. It opens the power supply circuit of the device and burns out when it overheats more than 90 degrees.

The general rule for solving problems with temperature sensors is to find everything connected to them on the control board: no signal, open circuit, short circuit.

The external block contains temperature sensors:

1. Outdoor air. Limits the operation of the device if the outside temperature is below the permissible temperature according to the characteristics. The device gives an error F4 and it just won't turn on.
2. Capacitor. There may be several such sensors in different places. The function of the element is to maintain pressure in the desired range under changing conditions outside.
3. Compressor discharge temperatures. With its help, pressure is indirectly determined. If it exceeds the norm, an error is thrown F8 or F9.
4. Gas main. Repeats the low pressure sensor.

The design of the air conditioner may have a different number of sensors (on the fan motor, connecting block, etc.), but the procedure for action when an error is issued is the same.

To understand whether the thermistor is working or not, you need to determine its resistance. The tools you will need are an ohmmeter or multimeter, as well as a room thermometer.

We take out the sensor, measure the resistance, read the readings, measure the room temperature and check the numbers with the documentation for the model under study. The average and most common value at an ambient temperature of 25 degrees is 10 kOhm

If it turns out that the sensor is faulty, you can install a permanent or trimming resistor in its place to temporarily restore the device’s functionality. In this case, the air conditioner will operate at maximum power, so it is worth expediting the replacement of the part with a working original one.

Atypical values ​​on the display

If when you turn on the mode "Heat" the device starts to work, but after a while the air stops blowing, the sun indicator blinks and the inscription lights up H1, this means the appliance goes into defrost mode.

It is necessary to turn off the device from the remote control, press and hold simultaneously X-FAN And MODE. After half an hour, the air conditioner should work at a normal rhythm.

Sometimes an incomprehensible code may appear on the display, the explanation of which is not in the instructions or on the manufacturer’s website. For example, a blinking sun and the value H7

In case of error H7 Diagnostics of the control and display module of the device is needed. Only a specialist can perform it.

Meaning H6 stands for activation of the compressor blocking sensor. This happens in two cases: when the sensor itself is broken and needs to be replaced, or when the freon charge is insufficient.

Also, with such an error, it is possible that the power supply to the impeller of the indoor unit is incorrectly connected, which was not taken into account during assembly. Here you need to disassemble the board to clarify the cause and eliminate it.

Air filter cleaning rules

According to the manufacturer's recommendation, the air filter must be cleaned after 100 hours of equipment operation.

The procedure algorithm is simple:

1. Turn off the device. Open the front panel.
2. Carefully pull the filter lever towards you. Retrieving the element.
3. We wash the filter in warm water with a washing solution.
4. Dry the part in the shade, install it in place, and close the device.

If the front panel is also dirty, fix it in the upper position, pull it towards you, remove it, and wash it.

The use of gasoline, solvents, and abrasive cleaning products is prohibited.

Do not allow water to enter the internal unit of the device. There is a risk of electric shock. Therefore, the parts must be removed and washed separately from the block itself.

If the air conditioner operates in a very dirty room, you need to wash the filter every two weeks.

Prevention of errors in air conditioner operation

Quality air conditioner installation greatly affects the duration and continuity of its service. The services of professional craftsmen are relatively inexpensive, but pay for themselves several times over.

When installing Electrolux air conditioners, specialists must take into account a number of factors:

• room area;
• direction of the sun's rays;
• size and location of windows;
• number of people living;
• availability and placement of other equipment.

It would be good if the company provided documentation with engineering design for a specific apartment, house, or room.

Conclusions and useful video on the topic

Video on how to clean the air conditioner yourself.The disassembly of the split system is shown in detail, recommendations and explanations are given. Before repeating the steps, it is advisable to turn on the video recording so that after cleaning you can easily return all the parts to their place:

Another video about disassembling an air conditioner for cleaning from a service company technician:

Each error code on the displays of Electrolux air conditioners makes it easy to determine the cause of the malfunction. The diagnostic system also provides automation of air conditioning control and monitoring of the proper condition of the device. The mechanism for displaying information about a malfunction on the display allows you to promptly stop the operation of the device and eliminate the problem. This is a convenient feature for users and service center workers.

It is useful for air conditioner owners to at least minimally understand fault codes in order to avoid overpaying for repairs or fix the problem themselves.

Do you have an Electrolux brand air conditioner installed and would you like to share your own experience of finding a breakdown and the nuances of fixing it? Tell our readers about it - the feedback block is located below.