Emergence of error code E24 or E18 on the display of your dishwasher Bosch Most often it indicates that the drain pump has stopped pumping water from the pallet. At this point, the technique blocks the start of the main wash cycle to prevent flooding of the kitchen, and requires immediate intervention to eliminate the blockage or replace the failed electric motor. To remove the pump on the dishwasher BoschIt is necessary to access the bottom of the unit, having previously turned off the power supply and dismantled the side wall of the case, since it is there that the drain unit is located.
Independent implementation of this procedure will save a significant amount on the call of the master, if you have basic skills of working with power tools and observe safety when working with electrical appliances. It is important to understand that in different series of dishwashers Boschsuch as Series 2, Series 4 or Series 6The design of the drain unit may differ slightly, but the general principle of dismantling remains similar.
Before starting work, be sure to shut off the water supply and remove the plug from the socket, as you will have to work with electrical components in the immediate vicinity of the water. Incorrect assembly or disregard of safety regulations may short circuit or damage other electronic control modules.
Diagnostics of malfunction of the drain pump
Before starting to disassemble, it is worth making sure that the problem lies in the pump, and not in clogging filters or a drain hose. The main sign of failure drain-pump is the presence of water in the pallet during the running drain cycle or the complete absence of the sound of the motor in the corresponding phase of the program. If you hear a buzz but the water doesn’t go away, it’s possible that the impeller has been jammed with a foreign object, such as a piece of glass or a bone from a fruit.
For initial inspection, you can run a drain program and listen to the characteristic sound of the electric motor working. Lack of sound or intermittent buzzing often indicates burnt-out winding or wear of the shaft bearings. In some models Bosch system AquaStop The error may occur due to water entering the protective pallet, which activates emergency mode of operation.
- 🔍 Check the rough and fine filters for large contaminants that can block the flow of water.
- 🔊 Listen to the sounds made by the machine during the drain attempt: silence or hum indicate different problems.
- 💧 Examine the drain hose for inflections or blockages at the connection point to the sewer system.
⚠️ Note: If after cleaning the filters and hoses, the machine continues to issue a drain error, most likely, the pump unit itself will need to be replaced or repaired.
Tools and workplace preparation required
For high-quality dismantling work, you will need a minimum set of tools that are found in the arsenal of any home craftsman. The main tool will be a cross screwdriver, preferably with a magnetic tip, since the screws can fall into hard-to-reach places of the body. You may also need a flat screwdriver to remove plastic latches and clamps.
Prepare a container in advance for draining the residues of water from hoses and pumps, as well as rags for cleaning internal surfaces. Since the pump is accessed through the side wall, you will have to put the dishwasher in. Bosch on the side, so make sure the floor is covered with soft material so as not to scratch the decorative panels.
☑️ Tools for pump replacement
Don’t forget to prepare a new pump or remap if you are planning to replace seals. Use of original spare parts Bosch guarantees a long service life of the unit and no problems with the compatibility of fasteners.
Procedure for access to the drainage node
Access to a drain pump in dishwashers Bosch It is carried out mainly through the right side wall, if you look at the facade of the device. First, you need to remove the bottom cap, which is attached to the latches or screws, and then unscrew the screws that fix the side panel. Be careful, the edges of metal sheets can be sharp.
After removing the side wall, you will have a view of the lower part of the machine, where the motor of the circulating pump is located, pump-pump and the heating element. The drain pump is usually at the bottom, attached to a plastic case or metal bottom. Some models require the front panel to be removed completely for more convenient access.
| Type of access | Action | Features |
|---|---|---|
| Across the bottom | Removal of the bottom cover | Requires the car's tilt |
| Across the side | Right wall removal | The most frequent option |
| Across the front | Removal of door and panel | Difficult disassembly |
If your model is embedded, make sure the machine is completely removed from the kitchen kitchen kitchen kitchen niche to provide free manoeuvre space. Do not attempt to perform work in cramped conditions, this increases the risk of damage to the wiring or plastic pipes.
Technology of dismantling pump
The immediate process of removing the pump begins with the disconnection of the electrical connectors. On the body of the pump there is a chip with wires, which is fixed by a plastic snapping mechanism. Carefully press the lock and pull the connector, avoiding sharp jerks so as not to damage the wires.
Next, it is necessary to loosen the clamps on the pipes suitable to the pump. Use pliers or a special clamping remover to move them sideways. After removing the clamps, the pipes are easily separated from the connections, but residual water can leak out of them, so keep a cloth on hand.
Mounting the pump itself to the body is carried out using screws or rotary latches, depending on the series. Bosch. Unscrew the fasteners counterclockwise. If the pump is mounted on rubber dampers, carefully remove it from the landing place, rotating around the axis.
- 🔧 Disconnect the electrical connector by pressing on the lock.
- 💦 Remove the drain pipes, previously weakening the metal clamps.
- ⚙️ Unscrew the screws of attaching the pump body to the base of the machine.
⚠️ Warning: When removing an old pump, be careful, there may be water with particles of fat inside, which should not get on electronic boards or heaters.
Installation of a new drain pump
Installation of the new unit is carried out in the reverse order of dismantling. Make sure that the sealing gums on the pipes of the new pump are clean and elastic, lubricate them with silicone lubrication if necessary for better fit. Insert the pump into the seat and fix it with screws or a rotary mechanism until the characteristic click.
Connect the pipes and tighten the clamps reliably to exclude leaks during operation. Pay special attention to corrugated hoses: they should not be twisted or stretched, as this will create additional resistance to the flow of water.
Electrical connection nuances
When connecting the connector, make sure the contacts are dry and not oxidized. If the contacts of the old chips are visible green plaque, clean them or replace the connector, otherwise you may re-emerge an error due to poor contact.
After mechanical installation, connect the electric connector to the point. Check the reliability of all connections visually and easily swaying the nodes. Only after that you can start assembling the dishwasher case Bosch.
Testing and running the system
Before the final installation of the machine in place, it is recommended to conduct a test run. Connect the power supply and start a short drain or rinse cycle. Carefully monitor the installation site of the new pump for the appearance of water drops or leaks.
If you hear any noise or vibration during operation, stop the program immediately and check that the pump is installed correctly. Perhaps the impeller touches the walls of the case or air entered the system, which must be removed by restarting.
It is critical to make sure that the water goes away by itself after the pump is running and that a siphon plug does not form in the hose, which can block further drain.Tip: After replacing the pump, start a wash cycle with citric acid or a special dishwasher cleaner to remove remnants of contaminants from the updated drain system.
Convinced of tightness of connections and normal operation drain-pumpPut the side wall and the cap in place. Secure all screws and check if the body is dangling. The vehicle is ready for full operation.
Frequently asked questions
Can I repair the old pump or do I need a replacement?
In most cases, repairs drain-pump impractical due to the low cost of a new part and the complexity of restoring the tightness of the case. However, if the problem was only wound threads on the shaft, cleaning can bring the knot back to life.
What error code indicates a pump malfunction in Bosch?
The most common error codes that indicate drain problems are: E24 (spill problem) E18 (exceeding drain time), E09 (Leakage, activated by AquaStop). The exact decoding depends on the specific model.
Why does the new pump hum but not pump water?
This may indicate that the impeller is blocked by a foreign object, or the pump is installed incorrectly (for example, a hose is clamped). It is also possible to get air into a system that requires several drain cycles to be removed.
Do I need to change the pump when replacing the pump?
It is advisable to use new seals, which often come complete with the original spare part. Bosch. Older rubber elements can lose elasticity and lead to leakage after a short time.
How often should the pump be cleaned for prevention?
Special pump cleaning is not required if you regularly wash filters and use quality products. However, every 6-12 months, it is recommended to check the condition of the impeller through the hole in the filter, scrolling it with your finger.