If your control panel is displaying Bosch Dishwasher Error Code E09, then we advise you to fix it immediately as ignoring it can cause even more problems. The E09 means that the temperature of the water isn’t getting high enough. It can be due to a faulty control panel relay or heating element. This can happen due to many reasons, such as the device is malfunctioning, or it has burned down due to excessive usage. Please note that the dishwasher’s flow-through heater may work similarly to the one in the washing machines, but they are completely different. The flow-through heater is located to the recirculation pump that allows for efficient heating of the water.
How To Fix Bosch Dishwasher Error Code E09
The heater is an essential part of the dishwasher, and to fix the Error E09; You may have to replace it with a new one. But It can be a difficult task, and when you decide to replace it, You need to make sure that you are buying the parts for the correct model. In majority cases, the error is due to the malfunctioning heating element, but sometimes it can also be caused due to below reasons.
- Burnt or improper wirings.
- Temperature Sensor is not working correctly.
- The Control panel is not working properly.
So it is better if you troubleshoot and diagnose the problem. As always, we ask you to take the help of professionals before doing anything. It is always best practice to take all safety precautions and do it only as your last resort.
Why is Heating Element not working? Possible Reasons
There can be many reasons which can cause the malfunctioning of the heating element/heater. Let’s see some of its common causes.
- Water Leakage: After prolonged usage, the seals and gaskets can wear out over time. When this happens, It will not be able to seal all the water that can result in water leakage. So water can now enter sump and damage critical electrical equipment such as heating element and motor. You also need to check other parts where water leakage can happen, such as water hose, nozzles, etc.
- The filter is Clogged: If the drain filter is not regularly cleaned, then the dust and dirt particle can accumulate over time, which can result in clogging of the filter. When this happens, it will interrupt the circulation of water, and water will not be able to transfer faster for washing dishes. This can also result in the overheating of the heating element and will result in Bosch Dishwasher Error Code E09. For fixing this issue, You need to clean the filter. If the filter is damaged, then you also have to replace it.
So open the dishwasher door carefully and try to locate the mesh filter. It is usually at the bottom of the dishwasher. Remove the mesh filter and rinse it under the running water. Make sure to remove all clogged particles. Now place the clean filter again into the dishwasher. Hopefully, now the error will be gone.
- Hard Water: If the water is hard, then many dishwashers cannot handle it and can every damage how the dishwasher operates. Due to Hard Water, Lime can build up on the heater in the form of a thick layer. Due to this layer, the heater will not be able to heat the water properly. This can make the heater to overheat and burn. To avoid this issue, we suggest you use special salt that can reduce the hardness of water and hence preventing any further damage to your dishwasher.
- Wirings/Thermal Sensor: Many people don’t have a voltage regulator connected to their dishwashers. So during the voltage fluctuation, the wirings or other critical electrical components can be damaged. So, we suggest you have a voltage regulator.
So these all things you can check before moving to check the heating element.
How to Repair/Replace the Heating element
The first thing, you need to confirm is that Error is really due to the heating element and not due to the malfunctioning of the control panel. So to determine this you need to reset the dishwasher. Let’s look at the steps to do it.
- Switch off the power supply and disconnect the dishwasher from it.
- Wait for 15-20 minutes.
- Now, connect the Bosch Dishwasher again to the Power supply.
If the Bosch Dishwasher Error Code E09 has come by mistake, then it will be reset and your dishwasher will again work. If you are still getting the same error then you need to do some advanced troubleshooting and diagnosis. Let’s look at the steps on how to do it.
Things You Will Need
- Screw Driver.
- A pair of Wire Clippers.
- Safety gloves.
Here are the steps you need to follow.
- Turn off the power supply to your dishwasher.
- Shut off the water supply valve.
- Remove the screws to release the lower access panel and set the panel aside.
- Disconnect the water supply line from the inlet valve.
- Remove the mounting screw to release the junction box cover note.
- Note The orientation of the wires on the terminal block then loosen the screws to release the wires.
- Use a flathead screwdriver to help remove the nut to release the strain relief from the bracket.
- Next, disconnect the drain hose from the sink.
- Open the dishwasher door and remove the mounting bracket screws to move the dishwasher.
- Pull the dishwasher away from the cabinet.
- Uninstall the screws to release the inner access plate, unhook the plate from the frame and harness support and set it aside.
- Remove the lower wash arm and rotate the filter basket, counterclockwise to detach it from the sump.
- Remove the Thermal Insulation.
- Now, carefully open the dishwasher tub door and remove the racks.
- Carefully remove the water spray’s arm.
- You can now see the mesh filter. Remove it.
- Take a screwdriver and use it to unscrew and remove the circulation pump.
- Unscrew the screws and remove the sump underneath.
- Use the wire strippers and carefully disconnect the drain pump from the supply.
- Remove the pump by turning clockwise.
- Remove hose, nozzles, wires that are connected to the pump.
- Carefully remove the heater by removing the clamp.
- Now Install the new heating element.
- Reinstall the heater by following the above process in reverse.
For checking if the heating element is working or not, use a multimeter to test the resistance and check if it’s increasing/decreasing with the temperature. You need to replace the faulty heating element with the new one.
We hope that Bosch Dishwasher Error Code E09 is now fixed. Please comment on your questions or suggestion, and we will be happy to answer them.