It can be very annoying if your Siemens dishwasher displays the error code E09, especially if you’re having a busy day. This error code typically denotes a heating element issue, which means the water in your dishwasher isn’t heating up correctly. Your dishes won’t get clean without hot water, which can be a big hassle.
Recognizing the root causes of errors E09 can assist you in determining whether you should hire a professional or try to fix it yourself. It may be a straightforward problem that you can solve with a fast reset in some situations, but it may also need more work in others.
This post will guide you through the typical causes of error E09, how to identify the problem, and what actions you can take to restore proper operation to your dishwasher. We can help, regardless of your level of experience doing things yourself or if you just need some advice.
| Error Code | Description |
| E09 | Indicates a heating issue in the dishwasher. The heating element may be faulty or there might be a problem with the wiring or connections. |
| Possible Causes | The heating element is damaged or burned out, or the wiring to the heating element is loose or disconnected. |
| Solution | Check the heating element for damage and replace it if necessary. Inspect all connections and wiring to ensure they are secure and intact. |
- Why this code appeared?
- Checking the temperature sensor
- The control board is damaged
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Why this code appeared?
A Siemens dishwasher’s informative error code E09 alerts the user to a problem with the control board, thermistor, or heating element. The water in the dishwasher is heated to some degree by each of these units.
- The water heating element is directly connected to the heating, because this tubular element is installed to heat the water entering the chamber. If the heating element burns out during operation, the water will always be cold. You can test the heating element with a regular multimeter.
- The thermistor in a Siemens dishwasher is responsible for measuring the water temperature. If the unit is faulty, it will either transmit incorrect data to the control board of the dishwasher, or will not transmit information at all. Under such conditions, the machine will not be able to heat the water to the level selected by the user for a specific working cycle.
- The control board of the dishwasher is responsible for the operation of all units of the device. That is why, when this element is damaged, the system fails, which simply stops receiving signals from the "brain".
These are the primary factors that can lead to an E09 error. It is worthwhile to enumerate supporting variables that may also contribute to inadequate heating. Sometimes these "little things" compromise the system’s ability to function as a whole.
- Incorrect connection of the "home assistant" to all communications.
- Heavily clogged garbage filter of the dishwasher.
- Incorrectly selected settings for the working cycle.
- Damage to the pressure sensor.
If the issue started as soon as you bought a brand-new Siemens dishwasher, an improper communications connection could be the root of the issue. Reconnecting the machine to the sewer will assist in clearing the error code in this instance.
Verify that the drain hose is connected correctly. Two bends must be made; the first should be at the machine’s base, at the bottom, and the second should be next to the siphon. This is the only way to prevent the "siphon effect," which occurs when waste liquid returns to the Siemens dishwasher rather than the sewer.
The water in the dishwasher will move incorrectly if the drain hose was connected improperly. This explains also why the user-set temperature of the water in the washing chamber will never exactly match. Rarely, this will result in the water staying cold.
What should I do in this circumstance? Reconnecting the drain hose is the easy way to guarantee optimal liquid circulation in the dishwasher. This can be completed in less than thirty minutes, but before you do, remember to unplug the power and water supplies for the equipment.
You should inspect the waste filter in the unit if the drain hose is not the source of the E09 error. Though it is there, its relationship to water heating is not immediately apparent. The reality is that for the water to effectively clean soiled dishes, it needs to freely circulate throughout the washing chamber, all the while being heated by the heating element. The flow of water will be significantly slowed down if the filter element is clogged with different types of debris.
As a result, water will stop returning to a designated tank and start to accumulate inside the bunker. Because of this, the water heating element in the Siemens dishwasher will be compelled to repeatedly collect liquid, preventing it from having enough time to heat the incoming liquid.
All that is needed to verify this theory is to closely monitor the wash’s development. Look directly into the working chamber during the working cycle. The liquid should not build up, so you must clear the blockage in the garbage filter if it starts to linger at the bottom of the chamber. Therefore, you can get the water’s circulation and heating back to normal with the aid of a little adjustment.
The element needs to be soaked in a citric acid solution for several hours in order to effectively remove dirt from the garbage filter.
It is worthwhile to check the Siemens dishwasher pressure sensor if the first two possibilities for the malfunction are not the cause. It is in charge of keeping an eye on and guaranteeing that water circulates throughout the system; if it malfunctions, there could be issues with the liquid. As a result, the machine will empty the liquid and replace it with cold water, delaying the heating element’s heating process. If this occurs with your "home assistant," you will need to replace the damaged sensor with a new one as it is not practical to repair the damaged part unless the issue is with the contacts, which are easily cleaned.
Checking the temperature sensor
The temperature sensor is another frequently occurring cause of the E09 error in Siemens dishwashers. The temperature sensor is self-testable. How can I accomplish this?
- Prepare the necessary tools (Phillips and slotted screwdrivers, pliers and a multimeter).
- Disconnect the machine from all communications.
- Remove all baskets for dishes from the washing camera.
- Remove the sprinkler, which is installed at the bottom of the bin.
- Remove the trash filter together with the small mesh installed underneath it.
- Unscrew the two fasteners hidden under the mesh.
- Put the "home assistant" on the floor, and then remove the side fasteners.
- Disconnect the drain pipe from the circulation unit in which the heating element is installed.
- Find the thermostat installed near the heating unit.
- Disconnect all wires from the temperature sensor.
Make sure to snap a picture of the proper wiring connection to avoid confusion during reassembly.
- Carefully clean the thermostat contacts, and then measure the resistance with a multimeter.
- If the unit is faulty, remove the damaged part and install a new temperature sensor in its place.
Rarely, the thermostat’s wiring causes the E09 error instead of the thermostat itself. Therefore, it’s important to check all the wires that might burn out while the dishwasher is actively operating in addition to the part. Before going on to the next check item, take a close look at the wiring’s insulation.
The control board is damaged
When the Siemens dishwasher’s control module malfunctions, another error code frequently appears. The relay of the water heating element, which is housed on the unit, is typically where the cause is hidden rather than the entire module.
Since the board is a very complex component that is much easier to damage than to repair yourself, it is not advised to attempt any repairs on it. To be certain that the issue is with the electronic unit, all you can do at home is carefully examine the control board and look for damage that is obvious. Hire a technician to fix the complex board if there are any obvious flaws.
While Error E09 on a Siemens dishwasher can be annoying, the first step in fixing it is figuring out what’s causing it. This error usually means that there is an issue with the heating element, which is necessary to clean your dishes properly.
You can attempt a DIY solution by following the troubleshooting steps described in this article. To make sure the issue is handled safely and effectively, it’s always a good idea to get in touch with a professional technician if you’re not comfortable doing repairs yourself.
Maintaining and caring for your dishwasher on a regular basis can help stop errors like E09 from happening again. The life of your dishwasher can be prolonged and optimal operation maintained by keeping it clean, keeping an eye out for wear, and adhering to the manufacturer.
When a Siemens dishwasher displays error E09, there is a heating element issue that keeps the dishwasher from heating water to the appropriate temperature. A heater relay malfunction or an issue with the heating circuit are frequently the causes of this problem. You may save time and money on professional repairs by diagnosing and possibly resolving Error E09 on your own by being aware of its causes and solutions.
