Error E1 in Hans's dishwasher

The Hansa dishwasher self-diagnostic system codes table begins with the E1 code. If you encounter this code, be aware that troubleshooting can be quite challenging. Let's first discuss the E1 error code in a Hansa dishwasher, and then we'll move on to troubleshooting options.

What bugs did the code create?

Hansa's dishwasher often displays the E1 code not because of a malfunction, but because of external factors. What does this mean? The dishwasher's inlet valve (like the washing machine's) and, more importantly, the flow sensor, are set to a specific water pressure. In our case, it's between 2.5 and 6 atmospheres. Typically, the water pressure in an apartment building is within this range, and the machine responds normally. However, in some cases, the water pressure exceeds this range and reaches 7-8 atmospheres.

With such high pressure, the valve malfunctions, allowing more water to flow than it should. The flow sensor also begins recording incorrect readings, stopping the dishwasher and displaying an E1 error. In theory, in this situation, you could wait a couple of days until the water pressure returns to normal and then continue using the machine, but then what's the guarantee that this won't happen again?

If you frequently experience pressure surges in your water supply, plumbers recommend installing a pressure-reducing valve with an appropriate adjustment range. This valve is installed before the dishwasher's inlet hose and reduces the pressure to a stable 3-4 atmospheres.

The pressure reducing valve costs from $5.5.

If the problem isn't with the water pressure, then you need to look for problems inside the machine. Here, the practical experience of experienced technicians will come in handy. If the E1 error code appears, they recommend checking:

• filters in front of the inlet valve for clogging;
• the intake valve itself, which may not open well;
• flow sensor.

We have no choice but to check each of these items one by one. We'll start with the filters and the intake valve, since these parts aren't located in the oil pan.

Troubleshooting

First, let's ensure the safety of the upcoming repair. Turn off the power to the dishwasher and shut off the water. Next, we'll remove the inlet hose and the inlet valve. The inlet valve in the Hansa dishwasher is external, so we simply unscrew it and the hose from the body, and the other end of the hose from the tee tap. Next you need to do the following:

1. At the base of the inlet valve, we find a flow-through filter, which is made in the form of a mesh. We remove it and clean it.
2. We flush the hose itself, since limescale deposits may have accumulated in it.
3. We check the intake valve. In this case, it's best to test the valve with a multimeter, then disassemble and check the mechanism for functionality, as the defect may be hidden.

Once you've confirmed the inlet valve is fully functional, it's time to reinstall it. First, install the flow-through filter, then connect the inlet valve to the hose.

What's next? Next, we need to remove the left side panel of the dishwasher. Once we've done that, we'll gain access to the flow sensor. Tilt the machine to drain excess water, and then try blowing out the sensor tubes. Dirt often gets into these tubes, causing the sensor to malfunction, displaying an E1 error. After blowing out the tubes, we need to test the sensor itself. If it's faulty, we'll need to replace it with a similar one ourselves. Removing the old sensor and installing the new one is intuitive; there's nothing complicated about it.

After all these steps, we need to check if the dishwasher works. If our steps are unsuccessful and the E1 error continues to appear on the display, we need to contact a specialist. Now it's their turn to determine how to fix this problem. In this case, the electronic module is most likely to blame, but in order to get into it, you need to have certain skills, so there is no other option but to call a specialist.

Let's summarize our story briefly. This error in the Hansa dishwasher is nothing more than a water supply failure. It could be a real malfunction, or it could simply be a faulty flow sensor. These suspicions will need to be confirmed by a comprehensive inspection, which you can easily perform yourself. If you've encountered other errors with your "home helper," read the article. Error codes for different dishwashers, this information will be useful to you. Good luck!

   

1 reader comment

1. November 7, 2023 at 9:27 AM

   serg:

   I had the same problem, I did it myself. This rubber check valve is located inside the water intake. You need to cut out the window with a knife. Glue it in place and seal it with a glue gun. That's it!

   Answer