You least expect a dirty trick from high-quality equipment, but still dishwashers of the Kuppersberg brands can also fail. Fortunately, the “evolution” of technology does not stand still, so the functions of the PMM are improving every year. Now the user can independently determine the cause of the breakdown. Kuppersberg dishwasher errors will help with this. How to decrypt codes and fix problems? Now you will know.
How are Coopersbush fault codes deciphered?
The dishwasher contains breakdown codes that appear on the screen when one of the equipment components fails. At the same time, the machine stops working and gives an error. Also, the problem may be reflected in the blinking of indicators on the panel. In the event of a network failure, restarting the PMM will help. Perhaps, after resetting the code, the operation of the equipment will be restored.
Here’s how to reset the Kuppersberg PMM:
- Pull the plug out of the socket.
- Wait 10-15 minutes.
- Connect the machine to the network.
- Look at the display.
The absence of characters on the screen indicates a one-time failure in the system. So, now you can start the device again. If the error reappears and the PMM does not work, then you should find out its decryption. Here is what the code means:
- E1 – AquaStop leakage protection has tripped. There is probably a leak in the dishwasher. This happens when overflowing, poor connection of hoses, depressurization of the chamber.
- E2 – means that the water restriction system in the PMM has worked. The problem is draining the waste fluid or the pressure switch, which sends signals about the water level to the electronic module.
- E3 – water overheats. There were problems with the heating element, which does not work correctly.
- E4 – problems with the temperature sensor. The temperature sensor controls the degree of heating of the heater and sends a signal to the module. In the event of a malfunction, heating problems are observed.
- E5 – water is not taken into the bunker. Problems with pressure in the pipes, clogged inlet filter, hose or broken valve.
- E6 – water does not drain from the tank. The problem is a blockage in the drainage system or a pump failure.
- E7 – turbine defect (if it is provided in the model). The amount of liquid is measured incorrectly.
- E8 – incorrect operation of the alternate wash. Contact the service center.
- E9 – problems with water intake. Check for water and pressure.
We figured out what this or that code means, now let’s move on to the most common causes of PMM breakdowns and troubleshooting.
Troubleshooting a Kuppersberg dishwasher
How to fix problems with your own hands? First of all, make sure your machine is not under warranty. When disassembling the equipment, the warranty will be invalid, so it is better to contact the service center.
Still want to try your hand? Then carefully read the instructions and watch the video. Any information will help determined users.
Causes of breakdowns of the Kuppersberg dishwasher
Why do Kuppersberg dishwashers get repaired? Most often, users complain about such problems:
- PMM is buzzing, but it does not fill the water. Probably the cause is a broken intake valve. It needs to be diagnosed and replaced.
- Water is taken in, but washing does not start. Check the injectors on the rocker arm. Often they are clogged with scale and food debris, which is why the jet does not break through. Problems with the circulation pump are also the cause of the problem. Diagnostics is required to determine.
It looks like a pump (aka a pump)
- No heating. Malfunctions of the heating element or temperature sensor. Both elements require replacement, are not subject to repair.
- The dishwasher does not turn on. The value of the problem is such that the power supply is turned off. Perhaps the start button is broken or the socket is faulty.
- Poor dish washing or powder dispenser won’t open. The point is improper loading, lack of heating, low water pressure.
How to fix breakdowns? This can be done if you are willing to invest in replacement parts.
Important! Always choose original parts that will last longer. If you need to order a part from abroad, it is better to wait a couple of weeks to get the original analogue, which will guarantee the long-term performance of the machine after repair.
The machine does not turn on
Everything is ready for launch, but it turns out that the equipment itself is not ready. The machine does not respond to keystrokes and other manipulations. Check if there is light in the room, inspect the plug and power cord for serviceability. To verify that the outlet is working, connect another device to it. Works? So the outlet is fine.
Press the power button. Doesn’t she sink? Sometimes detergent gets on the key, causing it to stick and the contacts to deteriorate. In such cases, it is enough to clean the contacts.
If the wiring or control board is damaged, diagnostics will have to be carried out. It is better to entrust work with electronics to the master. We will describe the dismantling sequence of the main unit. What to do:
- Disconnect the PMM from the network.
- Open the door and unscrew (loosen) the bolts around the inner perimeter.
Removing panels
- Remove the screws from the top completely.
- Separate the two parts of the door.
- Gently stick your hand in (the edges are sharp) and remove the module.
- Disconnect the black wire from the sensor.
- To completely remove the unit, disconnect the wiring chips.
Control module chips
Now you can inspect the block for damage. If such are noticed – call the master.
Water is not taken into the bunker
It also happens that the machine is buzzing, but the wash does not start. The reason must be sought in the filling system. Start by opening the faucet. Is there any water? Is the inlet valve open? If yes, then clean the parts from blockage like this:
- Close the inlet valve.
- Disconnect the inlet hose from the PMM body.
- Remove the mesh filter (if using pliers, be careful not to damage the plastic part).
What does the intake filter look like?
- Rinse it under the tap.
When the intake system is clear, proceed to check the valve. The element is located immediately behind the hose. Inside the valve there is a damper, which, when electricity is supplied, opens, letting in water, and then closes. Both the mechanical damper and the electrical part could break. Here’s what to do:
- To make sure that the coil is intact, prepare a multimeter.
- Remove the mounting screws and disconnect the valve wiring.
- Take the item out of the case.
- Attach the tester probes to the contacts of the element.
Valve ringing
- A good part will show 500 to 1500 ohms on the screen.
If the readings on the display have not changed, then there is no contact and the coil is broken. You will have to completely change the valve. Check out the video for details:
Water enters the hopper, but washing does not start
Start by inspecting the nozzles for blockages. The PMM has two impellers – upper and lower. In each of them there are holes (nozzles) through which water flies under pressure into the chamber. The circulation pump supplies the liquid. So the problem is to be found in these details.
How to clean injectors:
- Open the hopper door, take out the baskets.
- Press the impeller latches with your fingers and pull towards you.
Sprinkler location
- When the sprayer is in your hand, clean the holes with a toothpick.
- Also check the seats of the parts by cleaning them from scale.
To inspect the circulation pump, you will have to disassemble the machine a little. Here the sequence of actions is the same as when cleaning the drain. Therefore, the instruction is simultaneously applicable to the problem “liquid does not drain after washing».
Here’s how to get to the pump yourself:
- Disconnect the machine from the network and communications.
- Pull out the drain filter in the pan and the mesh behind it. Clean the parts from food debris.
Removing the filter
- Remove the water in the hole with a sponge. Pull on the pump cover, remove. Feel the impeller, then remove foreign objects.
- Remove the bolts that hold the pump assembly.
Fasteners for the recirculation unit
- Turn the PMM on its side, dismantle the bottom.
- Disconnect the wiring from the circulation and drain pump.
- Also disconnect all hoses and pipes, after loosening their clamps.
This is what the circulation pump looks like
To find out if the pump is working or not, a multimeter will help. See the video for diagnostic details:
Heating does not work
Have you noticed that the dishes are poorly washed or white stains remain on the surface? This may indicate a heating problem. In cold water, the detergent dissolves worse, and fats do not break down. The flow heater is assembled with a drain pump, so the disassembly sequence is described above. Consider how to check the detail:
- Disconnect the drain hose from the heating element by opening its clamp.
- Disconnect wiring.
- Attach the multimeter probes to the heater contacts.
Flow heater
- The working device will show a resistance equal to 1500 ohms (or so).
There is also a temperature sensor nearby. Both elements must be replaced if broken. To avoid burnout of the heating element, at least once a month, run a blank wash with citric acid, which splits the scale layer on the parts.
Problems with washing and opening the dispenser
In addition to cold water, improper placement of dishes in baskets can also affect the poor quality of washing. Read the instructions again and remember the simple truths:
- Remove food residue from appliances before loading.
- Place cups and glasses upside down in the upper compartment.
- Place small plates in the middle basket.
- Large dishes and plates should be placed in the lower compartment.
- Do not stack dishes tightly together.
- Make sure that the devices do not block the rotation of the nozzles.
An example of the layout of dishes
Everything about the correct loading of the PMM is shown in the video:
It is also important to use a special regenerating salt, which enhances the effect of the resin ion exchanger. The product softens water, protecting parts from scale, and dishes from streaks. By the way, the detergent dispenser can be blocked by the appliance, so pay attention to the placement. With a weak pressure or problems with the circulation pump, the powder is poorly washed out of the dispenser. Wait for the supply to be restored or take care of the repair.
Are you confident in your repair ability? Then proceed to disassemble and replace the defective part. Now you know how to diagnose some elements. Even when contacting the master, you can independently determine the location of the breakdown thanks to the described signs and save on diagnostics.