Bosch refrigerator does not work: causes of breakdowns and what to do

Did the refrigerator Bosch stop freezing, won’t turn on, or is making strange sounds? Do not rush to call a specialist - in 60% of cases the problem can be fixed on your own. This article will help you understand why the equipment failed, even if you have never repaired household appliances.

We analyzed typical malfunctions of models KGN39VL30R, KAN92VI30R, KGE39AL40 and other series, as well as user reviews and service manuals. Here you will find step-by-step instructions for diagnostics, a table of error codes and tips on how to save on repairs. Particular attention was paid to problems that are often confused with serious breakdowns (for example, false activation of protection or clogged drainage system).

If The refrigerator Bosch does not cool, but the light inside is on - this is one scenario. If it does not respond to the buttons and shows no signs of life, then we will analyze each case separately, taking into account the features of inverter and linear compressors.

1. The refrigerator does not turn on: we check the power supply and electronics.

The first thing to rule out is problems with the electrical network. Even if there is voltage in the outlet, it may not be enough to start the compressor. Take a multimeter and check:

• 🔌 Voltage in the socket: it should be 220-240 V. If it is less than 200 V, the refrigerator will not turn on. (protection will work).
• 🔋 Power cord and plug: inspect for melting, kinks or cracks. Often the contacts oxidize due to humidity.
• ⚡ The circuit breaker is in the panel: if it comes out when connecting the refrigerator, there is a problem short circuit inside the device.

If everything is in order with the electricity, but the refrigerator Bosch does not show signs of life, check starting capacitorIt is located next to the compressor (black or silver cylinder If the capacitor is faulty). the compressor will hum, but will not start. Test it with a tester - the resistance should be in the range of 10-30 Ohms. If the device shows a break or zero, the part must be replaced.

2. The compressor works, but the refrigerator does not freeze: top 5 reasons

The situation when the motor hums, but the temperature in the chambers does not drop, is typical for several malfunctions. simple:

1. Clogged capillary tube (found in models older than 5 years). Signs: the compressor works without stopping, the condenser (grid at the back) is cold. Eliminated by washing or replacing the tube.
2. Freon leakUsually accompanied by an oil stain on the floor under the refrigerator. it is impossible to charge the system - you need a specialist with the equipment.
3. Thermostat malfunctionIf the temperature sensor is lying, the compressor will turn on too rarely or not turn off at all. Check the thermostat with a multimeter - the resistance should change when you rotate the regulator.

A less obvious reason is Dust and pet hair form a “fur coat” that interferes with heat transfer. As a result, the compressor overheats and turns off. Solution: turn off the refrigerator, carefully vacuum the grille from the back or bottom (depending on the model). In models, the condenser is often hidden under the decorative cover. panel - it needs to be removed. condenser contamination. Dust and pet hair form a “fur coat” that interferes with heat transfer. As a result, the compressor overheats and shuts down. Solution: Unplug the refrigerator and carefully vacuum the grille from the back or bottom (depending on the model). In models Bosch Serie 6 The capacitor is often hidden under a decorative panel - it needs to be removed.

3. Bosch refrigerator error codes: decoding and actions

Modern models Bosch (for example, KAD92SB30 or KIN86AF30R) are equipped with a self-diagnosis system. an error code appears, do not panic - in 80% of cases this is not a critical failure. Below is current codes for refrigerators with electronic control:

Important: error codes may differ depending on the year of manufacture and series of the refrigerator. For example, in models before 2018, instead of E 01 It may be displayed F 01. If your code is not listed in the table, check the instructions for the specific model or use the online service Bosch Home Connect (if the refrigerator supports Smart functions).

How to reset an error on a Bosch refrigerator?

To reset the error unplug the refrigerator for 1-2 minutes, then turn it on again. If the code appears again, the problem is not resolved. In models with touch control (for example, KAN92VI30R), try holding the button SuperCool 5 seconds.

4. compressor

If you can hear a loud humwhen you turn it on, but the motor does not start, one of three things is to blame:

• 🔧 The compressor is jammed. More often found in older models (for example, KGV36XW20R). tries to start, but after 2-3 seconds it turns off with a click.
• 🔌 The start protection relay is faulty.. It is responsible for starting the compressor. If the relay clicks, but the motor does not rotate, it needs to be replaced.
• ⚡ Interturn short circuit in the compressor winding. Diagnosed with a multimeter: the resistance between the windings should be 20–40 Ohms. If less, the compressor needs to be replaced.

To check the compressor:

1. Disconnect the refrigerator from network.
2. Remove the back cover (in some models - the bottom panel).
3. Disconnect the wires from the compressor and test its contacts (marked C, S, R).

Turn off the power|Remove the protective cover|Disconnect the terminals|Ring the windings with a multimeter|Check the starting relay-->

If the compressor is faulty, replacing it will cost 50–70% of the cost of a new refrigerator. In this case, it makes sense to consider purchasing new equipment, especially if your model is more than 8–10 years old.

5. Problems with the NoFrost system: why ice builds up

Refrigerators Bosch with technology NoFrost (for example, KAD92SB30 or KAN90VI30R) should not freeze. If ice appears in the freezer, check:

• ❄️ The blower fan. If it does not rotate, the cold is not distributed evenly. A common reason is icing of the blades. Defrost the chamber for 24 hours.
• 🔥 Defrost heater. It turns on once every 8-12 hours to melt the ice. If it burns out, the ice will build up. 200–500 Ohm.
• 💧 Drainage hole. If it is clogged, the water does not drain, but freezes at the bottom of the chamber. Clean the hole with wire or a special brush.

In models with LowFrost (for example, KGN39XL30) a small amount of ice on the back wall is normal. But if ice forms quickly (more than 5 mm thick in a week), this is a sign of a malfunction of the thermostat or door seal.

6. The refrigerator turns on and immediately turns off: reasons

Short-term switching on of the compressor (1-3 seconds) followed by shutdown is usually associated with:

1. The overheating protection is triggered. The compressor overheats due to a dirty condenser or a faulty fan. Clean the grill and check the rotation of the blades.
2. Malfunction of the starting relay. If the relay “sticks”, it turns off the compressor immediately after starting. Replacing the relay costs 1,500–3,000 rubles.
3. A voltage drop in the network. Refrigerators Bosch are sensitive to power surges. If there are frequent outages in your area, install a stabilizer.

In models with an inverter compressor (for example, KGE39AL40), such a problem may indicate malfunction of the control board. Inverter motors require stable voltage, and the slightest fluctuations lead to an emergency shutdown.

7. When to call a technician: signs of serious damage

Some faults require professional repair. Contact the service center if:

• 🔥 The compressor does not start, although the power supply and relay are working properly (possibly winding breakage or piston jamming).
• ❄️ In the refrigerator compartment the temperature is above +10°C, and the freezer is working normally (a sign freon leakage or clogged capillary tube).
• 💻 The display shows an error E 15 or E 24 (problems with electronic module).
• 🔌 The refrigerator is electrocuted or the machine knocks out when turned on (probably breakdown to the body).

Average cost of repairing refrigerators Bosch in 2026:

⚠️ Attention: If the refrigerator Bosch is under warranty (usually 2-5 years, depending on the model), do not disassemble it yourself. This will lead to loss! warranty obligations. Contact an authorized service center - repairs will be free.

FAQ: Frequently asked questions about malfunctions of Bosch refrigerators

The Bosch refrigerator does not freeze, but the light inside is on?

Most likely the problem is compressor is faulty. data-i="201">thermostat, thermostat or freon leak. First, check if the fan is working (in models with NoFrost). If the compressor does not start, but is humming, the start relay.

Error E 01 flashes on the Bosch refrigerator display. What to do?

Error E 01 indicates a problem with fridge compartment temperature sensor. Try:

1. Turn off the refrigerator for 10 minutes, then turn it on.
2. Check whether the sensor is frozen (in models with NoFrost).
3. If the error remains, replace the sensor (cost 1,000–2,500 RUR).

The Bosch refrigerator turns on for 5 seconds and turns off. Why?

This is a typical symptom overheat protection operation or start relay malfunctionCheck:

• Compressor temperature (if hot, let it cool).
• Voltage in the socket (should be 220–240 V).
• Integrity of the starting relay (often cracks when overheated).

Can I fill freon into a Bosch refrigerator myself?

NoTo refill freon. you need a special tool (vacuum pump, gauge manifold) and certified refrigerant. Incorrect charging can lead to damage to the compressor or gas leakage.

How much does it cost to replace a compressor in a Bosch refrigerator?

The cost depends on the model:

• Linear compressors (old models): 8,000–12,000 ₽ per part + 3,000–5,000 ₽ for labor.
• Inverter compressors (new models): 12,000–20,000 ₽ per part + 5,000–7,000 ₽ for work.

For older refrigerators 10 years, replacing a compressor is often unprofitable - it’s cheaper to buy a new one.