Error E27 in a Bosch dishwasher (Bosch)

Household appliances from the German company Bosch are currently considered one of the most popular on the consumer market. Dishwashers of this brand do not differ in their capabilities from models of other well-known brands, and at the same time they are much cheaper, which is the reason for their high popularity.

However, sooner or later you may encounter a whole series of malfunctions. They can be caused for various reasons. Most cars have a display on the front panel that displays an error code - a combination of letters and numbers. Each brand has its own codification system. The meaning of the codes is described in the instructions for the equipment. Bosch models have their own code system. Sometimes your dishwasher may display an error code E27; below we will discuss in detail what it means.

Code meaning

The code system for Bosch dishwashers has its own error codification. If the display shows an error code e27, it means that the equipment does not have the required amount of electricity to operate in normal mode. It is worth noting here that Bosch household appliances are very sensitive to voltage changes and require a stable current supply, which is not always possible. Therefore, error e27 may occur from time to time. This means that either too many electrical appliances are turned on, or there is a problem with the electrical power processing system needed to operate.

This kind of problem most often occurs when the plug is connected to the tee from which all other electrical appliances operate. In this case, there are two options: turn off all other devices, or set a delayed start. Starting the car at night is convenient and profitable: this way you can get clean dishes by morning.

If this is your first time encountering this problem, you can try restarting the cycle first. First, turn off the machine and unplug it from the mains. Do not rush to immediately plug the plug back in - you need to wait a while. The best option is 10-15 minutes. After this, you can try to reproduce the cycle again. More often than not, this works. However, it also happens that even after turning it off and on again, the display continued to display an error code indicating insufficient power consumption. In this case, you will either have to disconnect all other appliances from the network, or run the dishwasher in delayed start mode.

The problem may also be that there is not enough energy coming from the substation that supplies your home. Such cases are quite rare and a repair team should be called to solve the problems that arise. Experienced electricians advise connecting household appliances to a separate branch of electrical networks, preferably grounded.

However, if you have a problem with an outlet overloading with a standard power of 220 volts, then a voltage stabilizer will help stabilize the operation of electrical appliances connected to it. It will be discussed in more detail below.

Error E27 in a Bosch dishwasher (Bosch)

Error E27 was displayed in your Bosch dishwasher, has the appliance stopped working? This means there was a problem in the electrical network. The machine's diagnostic system has detected a breakdown; deciphering the icons on the display will help you fix it. The meaning of the code can be found in the operating instructions or found in our publication.

Meaning and causes of the malfunction

If your Bosch dishwasher displays error E27, there are network problems. Most often this happens in the evening, when everyone returns home and turns on the PMM, washing machine, kettle and other appliances. The network is overloaded, the operating voltage drops below 220 Volts, and the equipment stops working.

What to do in such a situation? It is necessary to exclude a system failure and reboot the equipment. How to reset the error code:

• disconnect the PMM from the network for 10-15 minutes;
• turn it on and look at the scoreboard.

Are the icons showing up again? Then you need to troubleshoot the network. How to fix the problem:

• In the evening, load the dishes into the chamber.
• Add detergent and rinse aid.
• Set the “Delayed start” mode.
• Set the start time after 3-4 hours.

At night, the voltage in the network will be restored, and the machine will automatically start the wash when you are resting.

If you want to use the dishwasher when it is convenient, and not when there is voltage, then you need to install a stabilizer. Which stabilizer to choose, read one of the previous articles.

How to choose the right voltage stabilizer

Choosing the right auxiliary device is quite difficult. However, it has an undoubted advantage: the ability to regulate the current supply for several electrical appliances at once. For example, you have a dishwasher, microwave and washing machine connected to the network. If they are all turned on at the same hour, there is a risk of overvoltage. Therefore, a stabilizer in this case is an excellent solution. It often happens that you urgently need to start a cycle, but you cannot wait until night falls. It is precisely for such cases that a stabilizer comes in handy.

This device is also useful for those who want to regulate electricity consumption in the entire apartment. This option will cost much more, but you do not have to worry about a short circuit in the event of a power surge. This will certainly protect your household appliances from damage as a result of combustion of electronic components.

There are two types of electrical voltage stabilizer:

The first type is suitable for processing incoming electricity and subsequent uniform distribution among all electrical appliances. The stabilizer is connected to the network, and plugs from electrical appliances are connected to the stabilizer.

Now the device can work quietly. In the process of receiving energy, the regulator will process the main power and distribute it among the connected equipment.

This is one of the most common ways to save on electricity. A differential machine can also help you in this matter.

Difavtomat. How to use it

In essence, the automatic rifle performs a protective function. If excessive voltage is detected in one of the electrical supply areas, the device automatically shuts off the electrical supply to prevent overload or short circuit.

The difavtomat consists of two divided strips. Its action can extend to two or four poles. In addition to regulating the distribution of electricity, the difavtomat protects a person from electric shock. Its main advantage is the ultra-fast shut-off of the current supply - the stopper response time is 0.04 seconds. Stopping the power supply begins when the voltage exceeds the permissible limits - 250 volts.

The main advantages of the difavtomat should be highlighted:

• Fast response speed
• Ensuring a stable current supply during voltage surges, which helps protect microcircuits and electronic equipment from combustion
• The device can operate even in extreme temperatures. The difavtomat tolerates frost well down to -25 degrees Celsius, as well as heat of +50.
• The device is made of special high-quality parts ensuring a long service life

Eliminating the causes of error E27 in a BOSCH dishwasher

In the case when the home electrical network meets the requirements for it, the socket connectors provide reliable electrical contact, but the BOSCH dishwasher still displays error E27, the fault should also be looked for inside the washing unit. Possible root causes could be:

1. Water getting on the contacts of the heating element. Caused by depressurization of the washing chamber, increased humidity in the room where the Bosch dishwasher is used. Water is a conductor with electrical resistance. A voltage drop may occur across this temporary “resistor,” causing the self-diagnosis system to issue error “E27.” The situation is aggravated by the fact that the overload of the internal circuits of the machine that occurs in this case can damage the wires and cause them to ignite;
2. Poor contact at terminals. It can be caused by vibration during long-term transportation in violation of the latter rules - the nuts are unscrewed, the clamp of the conductors is loosened, and the electrical resistance of the contact increases. This leads to the BOSCH dishwasher giving error E27;
3. Unscrupulous previous repairs. Unqualified repairs are fraught with the installation of non-original spare parts, misalignment and under-pressure of the terminals, and the use of wires whose cross-section does not correspond to the amount of current flowing through them.

If error E27 appears on your BOSCH dishwasher, contact our service center for help. Experienced craftsmen will carry out repairs at the highest level and for little money, saving you not only from problems with the dishwasher, but also from the possible dangers that can come from unqualified intervention in complex Bosch equipment. Do not hesitate to call at a convenient time, we are in touch!

Installation of a security system

So, we already know the decoding of error code E27. It remains to be seen what needs to be done to avoid such a problem.

The difficulty is that you will have to choose a suitable stabilizer for a Bosch dishwasher. Practice has repeatedly proven that it is better to install one device on several household appliances at once - a refrigerator, a washing machine, a dishwasher.

If possible, experts recommend installing a main-type stabilizer to cover the entire electrical network of the apartment. This option will cost much more, but will reliably protect all devices from unexpected malfunctions.

The main parameter when choosing a stabilizer is the power indicator of the device. It is determined taking into account the corresponding values ​​of electrical appliances, which are displayed in the accompanying instructions. Having calculated the total value, you should add a twenty percent margin to get the final result.

Based on the electrical network of your home, the stabilizer can be compensatory or wide-range. The first device helps in the fight against low voltage, restoring it to normal parameters. The dimensions of the device are small, and the cost is within reasonable limits.

A wide-range stabilizing device is recommended for use in cases where the voltage is not only below the normal level, but also increases significantly.

It is believed that voltage surges within the range of 165 - 255 V will be “evened out” by a compensating device, protecting your Bosch dishwasher from error E27; in other cases, it is better to install a stabilizer with a wide range. But remember that its cost is much higher, and during operation the device makes characteristic sounds.

A stabilizer that protects several household appliances from voltage surges at once is connected quite easily. It should be plugged into a power outlet, and the power cords of the Bosch dishwasher and other units should be connected directly to the device. The device does not require configuration.

Things are somewhat different with the main protective device. Connecting it to the network is done using terminals, and it will be better if such work is performed by an experienced technician.

Electricity experts recommend turning on household appliances through a stabilizing device, additionally installing automatic switches. This measure will protect the Bosch dishwasher and other appliances from error E27 and protect the electrical network from possible overloads. Simply put, as soon as the network is overloaded, the automation will work and interrupt the flow of current.

There is another option - to write a statement to the housing and communal services so that they can figure out why the voltage in the network drops. Let us immediately note that this measure rarely leads to success, and it will take a lot of time to resolve the issue.

Bosch dishwashers

For many buyers, the criterion for choosing a reliable dishwasher is the country of manufacture and brand. Models from the German company Bosch come first on this list. And this is no coincidence. Their reliability is assessed by consumers according to the following indicators:

1. Bosch build quality.

The German company Bosch has long been considered a world leader in the production of household appliances. All its products are of high quality, in addition, they are convenient and practical.

Bosch dishwasher heating error codes

Possible errors in Bosch dishwashers related to heating are reflected in the following block of codes:

1. Code E01 (F01) - lights up on the screen if the heating element (heating element) malfunctions, or if its circuit is broken. It is possible that the electronic module of the element that controls the heating element may fail.

How to fix the error:

• The heating element is checked. Zero resistance or a breakdown to the housing may be detected. The heating element cannot be repaired, but is completely replaced;
• the safety thermostat is checked;
• The temperature sensor is checked.

2. Code E2 (F2) - appears on the display in case of malfunction of the sensor that controls the water temperature. This error usually alternates with code E01 (F01). The temperature sensor should turn off the heating element after heating the water. In the event that it fails, the heating element overheats the water.

How to fix the error:

• the resistance of the sensor is measured at the contacts;
• if the resistance value is low, the sensor must be replaced.

3. Code E09 (F09) - lights up on the screen in case of malfunction of the flow heater built into the circulation pump.

How to fix the error:

• The device checks for breakage of the heating element;
• at zero resistance the heating element changes.

4. Code E11 (F11) - appears on the display if the heater is turned off. As a rule, in this case, the control signal does not arrive at the temperature sensor, or there is no supply voltage to the sensor.

To identify and eliminate errors, check:

• internal resistance of the temperature sensor;
• internal resistance of the control module;
• condition of the temperature sensor wiring.

5. Code E12 (F12) - lights up on the screen if there is an increase in scale or dirt on the heating element.

How to fix the error:

• The condition of the heating element is checked. If after a reboot the code E09 (F09) is displayed, then there is a lot of scale;
• the heating element is removed, cleaned and reinstalled.

Bosch dishwasher: troubleshooting

Bosch are one of the major players in the home appliance industry, with a significant share of the dishwasher market. They are generally very reliable, but unfortunately, sometimes things can go wrong and you will need to fix the problem with a Bosch machine repair.

The good news is that because these dishwashers are so popular, service, parts and repairs are widely available. These household appliances are actually quite simple, so most of the problems you may encounter often require fairly simple repairs that you can do yourself.

Below are some tips on some of the most common dishwasher problems you may encounter. For more detailed advice on the Bosch dishwasher, we recommend reading our other articles on this topic.

Differences in dishwasher models

One of the most common differences between dishwashing machine models is the banal name of the buttons.

For example, Power SCRUB PLUS or REGULAR WASH may be called WASH or ECO depending on the dishwasher model as well as the country in which you are located. Another important difference is the presence of a display that can display error codes or its absence. In this case, the program indicator button lights up to tell you there is a problem.

As a reminder, model numbers are usually found on the top or lip of the door.

See also -

Aquastop system in dishwasher hoses to protect against leaks

Starting a test cycle

Bosch dishwashers have a test mode that can be run as a troubleshooting measure. The method to run this test process is similar across the Bosch range, so if your machine's functions seem to differ from those described below, it's worth experimenting as the process is similar with only minor differences.

To start the test mode, hold down the POWER SCRUB PLUS and REGULAR WASH buttons. Holding down the ON/OFF button may also help. The indicator above them should blink.

You can now check the status of each program by clicking a button, or you can run a full testing period.

Press the Power SCRUB PLUS and REGULAR WASH buttons. The electronic device will start and when the selected mode has ended, if you do not have a display, the indicator on your dishwasher model will light up if a fault has been detected.

Meaning of fault indicators

CLEAN

Temperature sensor malfunction. If this is the case, the test cycle will be very short as the instrument will stop testing as soon as this is detected.

RINSE/DRY

Water/tank fill sensor. If this problem occurs, the test cycle will not be completed due to the fact that the dishwasher cannot determine the correct water level simply by filling/draining over and over again.

WASH

Heating fault. Check the heating element.

Meanings of error codes on the display

If your Bosch dishwasher has a display panel, after completing the test cycle, an error code will be displayed if a fault is detected.

Problems with draining and filling water

During draining and filling of water, a large number of malfunctions occur. Possible errors of Bosch dishwashers during this process are reflected on the screen with the following block of codes:

1. Code E3 (F3) - lights up on the screen in case of failures with water filling. The executive program includes the time during which the machine is filled with water. If it is not filled within the programmed time, the machine stops.

To identify and eliminate the error, check:

• presence of water in the water supply;
• inlet filter condition;
• serviceability of the intake valve;
• the serviceability of the sensor that determines the water level.

If the above checks do not produce results, then the functionality of the pump is checked.

2. Code E5 (F5) - appears on the display when the tank is overfilled with water. First of all, this is due to the operation of the sensor that determines the water level.

To identify and eliminate errors, check:

• condition of the sensor tube for the absence of dirt;
• serviceability of contacts and supply wires of the sensor;
• the fill valve is in good working order to ensure there is no blockage due to which the water is not completely shut off.

3. Code E8 (F8) - appears on the display when the water level in the pan is low. If there is a lack of water, the circulation pump stops.

To eliminate the error, use the E3 (F3) code recommendations described earlier.

4. Code E16 (F16) - lights up on the screen when the tank is filled with water unauthorized. Most often this is due to a malfunction of the intake valve. For example, there is a blockage with debris, so it does not completely block the flow of water.

To identify and eliminate the error, check:

• intake valve condition;
• serviceability of the sensor that determines the water level;
• no increased amount of cleaning foam.

5. Code E17 (F17) - appears on the display if there are problems with water supply. First of all, this is due to increased water pressure in the water supply. In this case, the normal operation of the valve that admits water is disrupted.

Error codes for Bosch, Siemens, Neff, Gaggenau dishwashers

Bosch dishwashers are equipped with self-diagnostic systems. The owner does not encounter them until mysterious letters with numbers appear on the display. What are they pointing to? Here is a brief description based on what error codes your appliances show for Bosch or other brand dishwashers:

1. E1. There are heating problems. There is a high probability that the heating element or the electronic module responsible for its operation is faulty.
2. E2. Malfunction of the temperature sensor located in the same block with the heating element.
3. E3. Problems with water supply. The cause must be sought in a malfunction of the pump, hose or inlet filter.
4. E4. The flow switch is clogged or the motor is burnt out.
5. E5. Exceeding the water filling level compared to the permissible level. The problem may arise due to a faulty pressure switch or inlet valve.
6. E6. The aquasensor, a device that monitors the hardness and degree of contamination of water, is faulty.
7. E8. Insufficient water level in the pan, self-draining water. Often the cause of this phenomenon is that the water pressure in the water supply is not strong enough, and the dishwasher cannot be used.
8. E9. The heating element is faulty. You may have to change it.
9. E11. Problems with the module and NTC sensor, power wires.
10. E14. The flow sensor does not receive control pulses.
11. E15. Aquastop triggered due to water leakage. A specialist will determine the specific cause of the leak.
12. E16. This Bosch dishwasher error indicates an unexpected water supply. There may be problems with the level sensor, inlet valve. Sometimes an error is issued due to increased foaming.
13. E17. Problems with draining water.
14. E21. The drain pump is malfunctioning due to natural wear or a foreign object getting into it.
15. E24. The water does not drain, which may be caused by the hose being pinched.
16. E27. Low voltage in the network. The problem can be solved by installing a stabilizer.

Knowing the codes of the main problems will allow you to either quickly fix them yourself or call a specialist in a timely manner. This means that the likelihood of further proper operation of such valuable household appliances is much higher.

Problems due to clogs in Bosch dishwashers

If the user does not clear the dishes of food residues before storing them, then a blockage is highly likely to appear.

Possible errors in Bosch dishwashers due to blockages are reflected in a block of codes:

1. Code E07 (F07) - lights up on the screen when the hole is closed, which is intended for pumping water from the bunker. This may be due to improper placement of dishes or a foreign object.

The error is eliminated based on the results of a careful inspection of the bunker.

2. Code E22 (F22) - appears on the display in case of malfunctions of the filters and pump. For example, the filter is clogged, or the rotation speed of the drain pump impeller is reduced.

How to fix the error:

• the condition of the filters is checked. They are periodically cleaned or replaced;
• The functionality of the drain pump is checked. Sometimes even a simple cleaning will restore it to normal operation.

3. Code E24 (F24) - lights up on the screen in case of malfunction of the drain hose. This error has the following reasons:

• hose clogged;
• unacceptable hose bend;
• sewer blockage;
• The drain pipe is closed.

Sensor malfunctions

The dishwashing program uses signals from various sensors. Possible errors in Bosch dishwashers due to sensor malfunctions are reflected in the following block of codes:

1. Code E4 (F4) - lights up on the screen in case of malfunction of the sensor that determines the water level and controls the water flow for the sprinkler. It is either broken or clogged. An indirect cause may be clogged sprinkler nozzles.

How to fix the error:

• the sensor and supply tube are checked;
• the condition of the injectors is checked;
• the position and condition of the water flow switch is checked;
• The performance of the motor that controls the flow switch is assessed.

2. Code E6 (F6) - appears on the display in case of malfunction of the clean (turbid) water sensor. If you wash dishes that are not dirty, then thanks to the sensor the rinse mode does not turn on, which means you save water and electricity.

How to fix the error:

• The sensor is inspected. It is located next to the heating element;
• burnt contacts are replaced;
• As a last resort, change the sensor.

3. Code E14 (F14) - lights up on the screen in case of malfunction of the sensor that controls the volume of water. However, it does not respond to commands coming from the electronic unit.

How to fix the error:

• the functionality of the sensor is checked;
• If necessary, replace the faulty sensor, since it cannot be repaired.

4. Code E15 (F15) - appears on the display when there is a water leak. This code is only found in dishwashers with the AquaStop function.

Electrical problems with Bosch dishwashers

Dishwashers have complex electrical circuits. Possible errors in Bosch dishwashers due to electrical failures are reflected by the following types of codes:

1. Code E01 (F01) and code E30 (F30) - lights up on the screen when there is a malfunction of the electrical circuit elements. Most often this is a break or short circuit.

How to fix the error:

• the power supply is turned off and the wires and circuit elements are inspected;
• In case of a complex breakdown, contact the service center for help.

2. Code E27 (F27) - appears on the display when there is a failure in the power supply. As a rule, these are voltage surges that occur during periods of increased load on the electrical network.

The error disappears if the dishwasher is operated with a voltage stabilizer.

In general, it should be noted that self-monitoring significantly increases the reliability of the Bosch dishwasher.

Simple breakdowns can easily be fixed on your own after deciphering the codes. But in case of serious damage, it is better to contact specialists.