Repair and malfunctions of various dishwashers
Even a non-technical professional understands that any dishwasher, regardless of brand, can theoretically experience any kind of malfunction. Listing these so-called typical malfunctions, and even discussing how to fix them, would fill an entire book. In writing this article, we decided to take a different approach.
Leading service centers around the world keep statistics on dishwasher malfunctions. We decided to describe the most common malfunctions encountered in specific dishwasher brands based on these statistics, not forgetting to cover professional dishwasher repairs. Here's the result.
Specific breakdowns of Hansa washing machines
According to statistics from leading service centers, the main problem with Hansa dishwashers is the water level sensor. It's difficult to say why this particular sensor breaks down more often in this brand's machines—perhaps the machine's design or poor-quality components are to blame—but the fact remains. In most cases, the pressure switch's electrical components burn out, so it cannot be repaired and must be replaced.
How can I tell if the pressure switch in my Hansa dishwasher is faulty? What are the symptoms?
- Water is constantly being poured into and drained from the dishwasher.
- The dishwasher tank contains less water than is permitted.
- The dishwasher tank is filled with more water than is permitted.
- The dishwasher suddenly stops working and stands without pumping out water.
How can you repair a Hansa dishwasher in this case? You need to check the pressure switch yourself and then, depending on the results, replace it with a new one. This is described in detail in the article. Replacing the pressure switch in a dishwasherThis publication not only describes how to repair Hansa dishwashers by replacing the water level sensor, but also how to properly test this component.
FYI! Hansa dishwashers are assembled primarily in China, but surprisingly, their quality is far from poor.
Specific AEG Machine Breakdowns
Experts say the most common breakdown of various AEG dishwasher models is a faulty drain pump. This is quite surprising, given the truly German quality of this component and its impeccable installation, but, as they say, statistics are relentless. How can you tell if the pump is broken? In fact, you can't be 100% sure based on external symptoms, although some of their manifestations should be taken into account.
- The pump makes uneven sounds of varying strength, while dirty water continues to stand in the washing chamber.
- At the moment when the washing program should drain the dirty water, the dishwasher freezes and stops working.
- After starting the washing program, the dishwasher freezes, displaying error I 20.
If one of the above signs of failure appears, this is a reason to check the pump with a multimeter. How to check and repair AEG dishwashers? Here's how.
- Disconnect the dishwasher from the power supply, turn off the water and disconnect the inlet and drain hoses.
- We take the dishwasher out to a free place, having first laid a rag there.
- We take out the car and place it on the back wall.
Important! When you tilt the dishwasher, some water will spill onto the floor.
- Carefully remove the pan, locate the pump (the drain hose is connected to it), and connect the multimeter probes to the contacts. Based on the test results, we'll decide whether to replace the pump or continue investigating the cause of the problem.
You can replace the pump in your AEG dishwasher yourself. Read the article to learn how to best do this. How to Replace a Dishwasher Pump, although of course it is better to entrust this work to a specialist, because the dishwasher is expensive, you never know.
Specific problems with NEFF washing machines
A common problem with Neff dishwashers is the frequent activation of the leak protection system. Users who encounter this problem for the first time are extremely worried and rush to call a repairman. The repairman arrives, fixes the problem in 30 seconds, takes their money, and leaves. We don't think this is entirely fair, so we'll tell you how to repair a Neff dishwasher yourself in just a few minutes—and best of all, completely free.
First, let's look at how and why the leak protection system in these machines works. The bottom of the Neff dishwasher's wash chamber has a fairly large float—or, more precisely, the upper part of the float mechanism of the leak protection system. When water enters the tray, the float rises, triggering a sensor and stopping the machine. This happens under normal conditions.
Unfortunately, more often than not it is the other way around. Food debris and dirt get under the movable cover of the float mechanism, causing it to rise and triggering the protection. Of course, in this case, there's no water in the tray, and looking for it there is pointless. What should I do?
- Turn off the dishwasher using the on/off button.
- Open the door of the washing chamber.
- Grasp the cover of the leak protection system float with your hands (the float is located next to the debris filter).
- Raise and lower the float several times, and then use a cotton swab to carefully remove any dirt that has accumulated underneath it.
- Next, turn on the machine and check how it works.
Believe it or not, this is where Neff dishwasher repairs can end, if we're talking about this most common malfunction.
Please note! Foreign objects (chicken bones, broken plates, etc.) often become lodged in the hole under the top of the float, preventing it from functioning properly. If the foreign object is not removed, the protection will not activate.
Specific Whirlpool Machine Problems
According to the same statistics, the inlet valve is the most common failure point in Whirlpool dishwashers. To repair a Whirlpool dishwasher in this case, it's important to determine whether the fault lies in the electrical component—the coil or the mechanical part. If the electrical part fails, the valve must be replaced; if the mechanical part breaks, there is a chance that the part can be repaired. What actions need to be taken?
- Turn off the machine and then unscrew the front panel located just below the door.
- On the front left side of the machine you will see a fill valve with a hose connected to it.
- Disconnect the wires from the valve coil and attach the ohmmeter probes to the contacts. Set the meter to the minimum resistance value and begin measuring. If the meter shows a value between 500 and 1500 ohms, the intake valve's electrical system is fully functional. If the resistance is significantly higher or lower than these values, the valve is faulty.
- If the electrical system is working properly but the valve still doesn't work, it's likely clogged with limescale deposits. You need to unscrew its body and clean the mechanism.
If the valve still doesn't function properly after the above steps, it needs to be replaced. As you can see, repairing Whirlpool dishwashers, at least with regard to this issue, isn't difficult. Any competent homeowner can handle it themselves without any problems.
Specific malfunctions of Krona and Kuppersbusch washing machines
The control module is widely considered the main weak point of Krona dishwashers. While the rest of the dishwasher's components are quite reliable, the control unit is often prone to problems. In 99% of cases, it's a manufacturing defect, either due to poor soldering or poor contact between circuit board components. Some experts believe that the manufacturer has begun purchasing control modules for its vehicles in China, but it is not possible to verify this information.
Important! If you suspect the control module is faulty and your dishwasher is under warranty, call a technician immediately and send the machine to a service center for repair.
How to repair a Krona dishwasher? In this case, we can say unequivocally: don't try to repair it yourself. The control module is an expensive component, and unqualified repairs can permanently damage it, forcing you to buy a new one, costing around $100. It's better to contact a specialist immediately—it'll be cheaper. Our technicians repair Krona dishwashers quickly and professionally, saving you time and hassle.
While the control module of Krona dishwashers is more likely to fail, there aren't even any statistics on the frequency of breakdowns of Kuppersbusch dishwashers. Does this mean that repairs to Kuppersbusch dishwashers are so rare that there's no point in keeping such statistics, or is the manufacturer trying to keep this information from reaching consumers? With great difficulty, we managed to obtain some information from several technicians who claim that Kuppersbusch dishwashers most often require repairs when the on/off button breaks.
The symptoms of a breakdown in this case are simple: the dishwasher no longer turns on or off with the button. How do you repair a Kuppersbusch dishwasher in this case?
- We open the dishwasher door.
- We take a Phillips screwdriver and unscrew the inner wall of its door.
- Unscrew the control panel and clean the contacts of the on/off button. Often, contacts become oxidized by moisture and stop functioning. Cleaning helps for a while, but the problem may reoccur in the future.
- We screw the control panel back into place, assemble the door and check the operation of the dishwasher.
In conclusion, repairing industrial dishwashers, like repairing household ones, isn't always possible on your own. While much depends on the user's skills and dedication, it's often best to entrust the repair to a professional, as the health of your dishwasher is at stake. Good luck!
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Good tips! Thanks!
Where is everyone's favorite Bosch!?
Good afternoon. The dishwasher runs for 15-20 minutes, then trips the fuses. The wiring is fine. I opened the drain pan and it's dry. What's the problem?