E4 error in the Krona dishwasher: decoding, elimination

What if the dishwasher "Crohn" showed an error E4? You need to find the decryption of icons and try to fix the problem. This error is due to the fact that the bunker is full of water.

The dishwasher is equipped with a board that controls the operation of all components and components. It is equipped with a self-diagnosis system and fixes faults. Then the module displays an error code on the display - a brief description is in the manual, and a detailed description is given in our article.

Content of the material:

  • 1Why is the E4 trouble code on the panel?
  • 2How to fix the problem

Why is the E4 trouble code on the panel?

For what reasons can the MMC "Krona" show the error E4 on the display? You will see it if there is too much water in the camera. This is dangerous, as it can lead to leakage.

How does the water set in the dishwasher.The inlet valve receives a signal from the board, its membrane opens, and water begins to flow into the system. The level sensor (pressure switch) determines its quantity in the tank, sending a signal to the module about the completion of the fence.

It turns out that the reason for such a problem could be:

  1. Malfunction of the pressure switch.
  2. Failure of the priming valve.

How to fix the problem

Before eliminating the failure, exclude the system failure. To reset the icons from the screen, proceed as follows:

  • remove the PMM plug from the socket;
  • Repeat the connection after 10-15 minutes.

If this does not help, inspect the details.

Check the intake valve.Usually it is at the bottom of the case:

  • close the shut-off valve;
  • Disconnect the water inlet hose - be careful, water may leak from it;
  • behind him is a valve - see if his contacts have burnt;

  • check the mechanical part by applying a working voltage of 220 V to the coils of the part. Does the membrane open and close? So, the element is working.

In the event of a breakdown, the diaphragm wedges in the open position, so water is supplied without stopping.

If a fault occurs, a complete valve replacement will help.To do this, disconnect the wiring harness and unscrew the fastening bolt. With the old item you can go to the store to find a suitable replacement. Installation is in the reverse order.

For diagnostics pressostat it is necessary to disassemble the machine.In models "Bosch "Siemens" it is connected to the circulation pump. Therefore, the approach to the part is carried out through the bottom of the machinery.

How to replace the level sensor, we wrote in a separate publication. Checking is simple: inspect the wiring. In case of malfunction, the sensor must be replaced.

Do not be frightened by noticing the error E 4 on the screen of the Krona dishwasher. Now you have the meaning and decoding of the code - you can fix the problem with your own hands.

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