The accumulation of water under the vegetable drawers in the refrigerator Bosch is a common problem faced by owners of models with a drip defrosting system. Most often, this is not a critical failure, but it cannot be ignored: excess moisture can lead to the development of mold, an unpleasant odor, and even corrosion of internal parts. In most cases, the cause can be eliminated on your own without resorting to expensive repairs. NoFrost and drip defrosting. Most often, this is not a critical failure, but it cannot be ignored: excess moisture can lead to the development of mold, an unpleasant odor, and even corrosion of internal parts. In most cases, the cause can be eliminated on your own without resorting to expensive repairs.
In this article we will analyze all the possible reasons for the appearance of water under vegetable containers - from a simple clogged drainage hole to a thermostat malfunction. You'll learn how to diagnose the problem, what tools you'll need for repairs, and when you should call a professional. We will place special emphasis on models Bosch series KGE39, KGN39, KAN9*** and other popular lines where this malfunction occurs most often.
Before starting repairs, make sure that the refrigerator is installed level - even a slight tilt forward or backward can disrupt the outflow of condensate. It's easy to check: open the door and see if it remains half-open or closes on its own. If the door “moves” to one side, the legs will need to be adjusted.
1. A clogged drainage hole is the main cause of water accumulation
In 80% of cases, water under vegetable drawers appears due to a blockage drainage hole in the back of the refrigerator compartment. This system is designed to remove condensate that forms during compressor operation. If the hole is clogged with crumbs, food particles or mold, the water does not go into a special reservoir, but accumulates at the bottom of the chamber.
To check the drainage, unplug the refrigerator and carefully remove the back panel in the refrigerator compartment (usually it is secured with latches or screws). Under the panel you will see a small hole with a diameter of 5–8 mm - this is drainage. Often dirt or even ice accumulates next to it.
For cleaning you will need:
- 🧹 Soft brush or cotton swab
- 💦 Warm water with soap or soda solution (1 tbsp per 1 liter of water)
- 🩹 A syringe without a needle or a rubber bulb for flushing
- 🔧 Tweezers (if debris is stuck in the hole)
Carefully remove visible dirt, then rinse the hole with warm water using a syringe. If the water flows freely, the blockage has been removed. Otherwise, you may need to clean it with a special brush (sold in hardware stores).
Unplug the refrigerator|Remove the back panel in the refrigerator compartment|Remove visible debris with tweezers or a brush|Wash the hole with warm water and soap|Check the permeability by pouring water into the drainage-->
2. Incorrect installation of the refrigerator: tilt and vibration
If the drainage hole is clean, but water still accumulates, check installation level of the refrigerator. Even a slight tilt back (towards the compressor) can lead to condensate not flowing into the drain, but remaining under the drawers. The optimal tilt is 1–2° forward (towards you), so that the door closes on its own under the influence of gravity.
How to adjust the legs:
- Use a construction level, placing it on the top cover of the refrigerator.
- If the bubble is shifted to the back wall, twist the front legs clockwise (usually with a wrench or screwdriver).
- Check that the refrigerator does not swing when lightly pressing on the corners.
Water may also appear due to vibrations during compressor operation. If the refrigerator is placed on an uneven floor (for example, on tiles with differences), vibrations are transmitted to the drainage system, and condensation is sprayed throughout the chamber. In this case, a rubber mat under the legs or moving the equipment to a more level surface will help.
3. Problems with the NoFrost system: when the fan or heater is to blame
Refrigerators Bosch with technology NoFrost (for example, models KAN90, KIN86) have forced air circulation. If the fan or evaporator heater fails, ice begins to accumulate on the back wall, and when defrosting, water flows not into the drain, but directly under the drawers.
Signs of a malfunction of the NoFrost system:
- ❄️ Ice or frost forms on the back wall of the refrigerator compartment.
- 🔇 The fan does not make noise during operation (normally it turns on periodically).
- 🔥 The refrigerator does not cool well, although the compressor works without stopping.
For diagnostics, turn off the refrigerator for 12-24 hours so that the ice completely melts. Then turn it on and listen: if the fan does not start, it will need to be replaced. The evaporator heater is checked with a multimeter (resistance should be in the range of 200–500 Ohms). It is better to entrust these works to a specialist, since disassembly of the rear panel of the freezer is required.
How to check the fan without disassembling?
Open the refrigerator door and press the light button (if there is one). The fan should turn on briefly to circulate air. If this does not happen, there is a high probability of its breakdown.
4. Malfunction of the thermostat or temperature sensor
If the refrigerator Bosch operates unstably (either very cold or barely cools), and water accumulates under the drawers, the problem may lie in thermostat or temperature sensor. These elements are responsible for regulating the cooling cycle. If they break down, the compressor may run for too long, which leads to excessive condensation.
How to check the thermostat:
- Unplug the refrigerator.
- Remove the thermostat cover (usually located inside the refrigerator compartment or on the top panel).
- Check the wires for oxidation or breaks.
- Measure the resistance of the sensor with a multimeter (for most models Bosch the norm is 4–6 kOhm at room temperature).
If the thermostat is faulty, it must be replaced. For models Bosch original parts with article numbers 00602399 (for series 4) or 00642480 (for series 6) are suitable. The cost of the spare part is from 1,500 to 3,000 rubles, depending on the model.
⚠️ Attention: Replacing the thermostat requires electrical knowledge. If you are not confident in your skills, contact a service center. Incorrect connection may result in a short circuit.
5. Damage to the door seal: when the seal is broken
A worn or dirty seal allows warm air to enter the chamber, causing the compressor to work longer and condensation to form more intensively. Over time, this causes water to accumulate under the drawers. Checking the tightness is simple: close the door by inserting a sheet of paper between the seal and the body. If the sheet is easily pulled out, the seal requires replacement.
What to do:
- 🧼 Clean the seal with a solution of soda or vinegar (1:1 with water) - often the reason is fatty deposits.
- 🔧 Tighten the door hinges if the seal comes off due to sagging.
- 🛠️ Replace the seal with a new one (the original ones for Bosch have article numbers
00605476or00642479).
The cost of a new seal is from 2,000 to 4,500 rubles. Installation takes 10–15 minutes and does not require special tools. It is important to choose a part that is suitable for your model (check the article number in the documentation or on the manufacturer’s website).
6. Clogged or damaged drain tube
If the drain hole is clean, but the water still does not flow out, the problem may be in drain tubewhich goes from the hole to the reservoir on the compressor. Sometimes plugs of ice or dirt form in the tube, or it becomes bent when moving the refrigerator.
How to clean the tube:
- Unplug the refrigerator and remove the back panel at the bottom (behind the compressor).
- Find a rubber tube going from the drainage hole to the tank.
- Remove the tube from the tank and rinse it with warm water under pressure (you can use a hose).
- If there is ice in the tube, gently warm it with a hairdryer (temperature no higher than 50°C).
If The tube is damaged (cracks, ruptures) and must be replaced. For models Bosch a universal silicone tube with a diameter of 8–10 mm is suitable, which can be found in plumbing stores.
7. When you can’t do without a technician: serious breakdowns
If all of the above methods did not help, the problem may be associated with more serious malfunctions:
- 🔧 Freon leak — the refrigerator does not cool well, the compressor works without stopping.
- ⚙️ Failure of the compressor — extraneous noises are heard (knocking, grinding), and the temperature in the chamber is unstable.
- 💡 Failure of the control board —the refrigerator turns on and immediately turns off, or does not respond to the settings.
These breakdowns require professional diagnostics. Average repair cost:
| Type of breakdown | Cost of work (₽) | Cost of spare parts (₽) |
|---|---|---|
| Freon leakage + refilling | 3 500–5 000 | 1 500–2 500 |
| Replacement compressor | 4 000–6 000 | 5 000–12 000 |
| Repair of control board | 2 500–4 000 | 3 000–8 000 |
For refrigerators Bosch under warranty (usually 2-5 years depending on the model) repair is free. Check the warranty period in the device passport or on the website Bosch by serial number.
⚠️ Attention: If the refrigerator is under warranty, do not try to repair it yourself - this may result in refusal of service.
FAQ: Frequently asked questions about water in a Bosch refrigerator
Is it possible to use a refrigerator if water accumulates under the drawers?
For a short time - yes, but this is fraught with the development of mold and an unpleasant odor. In addition, excess moisture can lead to corrosion of metal parts. It is recommended to eliminate the cause within 1-2 weeks.
How often should you clean the drainage hole?
Ideally - once every 3-6 months, especially if you store bulk products (flour, cereals) or unpackaged vegetables in the refrigerator. If there are pets in the house, cleaning should be done more often (fur can clog the hole).
Why does water continue to accumulate after defrosting?
The drainage system was probably damaged when removing ice (for example, with a sharp object). Check the integrity of the tube and hole. Also, the reason may be incomplete defrosting - let the refrigerator stand turned off for 12-24 hours.
Can the water under the drawers be associated with the "Super Cooling" mode?
Yes, if the mode SuperCool is on constantly, the compressor works harder, which leads to excess condensate Use this mode only when necessary (for example, before loading a large amount of food) and turn it off after 6-12 hours.
What should you do if there is water not only under the drawers, but also on the floor under the refrigerator?
This is a sign that the condensate reservoir (located on the compressor) is overfilled or damaged. Unplug the refrigerator, drain the water tank, and check for cracks. If the tank is intact, but water continues to flow, the problem is in the drainage tube or its connection.