If you just found out that your Bosch dishwasher won’t start, then you must be frustrated and desperate about it. But don’t worry, as we can help you with the fixing of your problem. If you know the location of the problem, you can do related Bosch dishwasher troubleshooting and try to detect the problem. After finding the exact problem, you can try correcting the faults or replacing the components. Depending on the complexity, you can get help from a technician if you are not confident in your skills. However, having a proper idea about the defect can help you in the process.
Bosch Dishwasher Troubleshooting
If you have problems with the Bosch dishwasher, then there can be few main reasons for this. You can try troubleshooting them by checking the following possibilities. Here are some most likely causes that might be the reasons why Bosch dishwasher won’t start.
Check the Power
Before going for any advanced troubleshooting, you need to check whether the power supply is working correctly. If the power is not supplied, then your Bosch dishwasher won’t turn on. So to make sure the proper function of this, try the following steps.
- Do not use extension cords for plugging in dishwashers because they are inefficient in transferring the amount of power required by dishwashers.
- Check whether the power switches are turned on.
- Check for any tripped circuit breakers in your home main circuit board.
Check the Dishwasher Door Latch
The Bosch dishwasher won’t start if the door is not closed properly. This is to ensure that water does not leak while operating. Once the door is closed properly, the door latch signals the control panel to start the dishwasher. So, it is necessary to check whether the dishwasher door is properly shut and the latch is closed and switched on.
If the Bosch dishwasher won’t start cycle even when the door is properly closed, then there might be a probability that your dishwasher is broken. This can also be due to a broken switch that does not continue the signal transmission. You can get this clarified using a multimeter test. In case they don’t function, you would have to replace the parts as they cannot be repaired.
The door switch might have functioning problems due to corrosion. This might be a result of exposure to water and moisture over a long time. The electrical connections would not be able to transmit signals efficiently. So it is also necessary to check these terminals if the Bosch dishwasher won’t turn on.
Check Dishwasher Cycle Settings
If the dishwasher won’t start but has power, then there must be an issue with the cycle settings. Sometimes, this could be due to a child lock setting that delays the start. An error code or a symbol would be displayed on the control panel to alert you to this. You can check this from your dishwasher manual to find the reason. Check the control pad to make sure whether it functions properly. If there are any buttons not working, then this would also need to be replaced.
Try Troubleshooting by Reset
If you have any trouble with the way cycles, work, like when the cycle goes on halfway and stops or getting back to the initial stage, and then you can try resetting it. This reset feature is indicated with an asterisk with the word indicated below the button. In newer Bosch dishwashers, this may even be the same button as the Start button. You need to press and hold this button for about 3 to 5 seconds. In older versions, this may be called cancel or drain. They would require pressing of few buttons to stop the current cycle and start from the beginning.
Broken Bosch Dishwasher Parts
Even if all the above faults are configured, and the Bosch dishwasher won’t start the cycle, then there must be some components that work properly. Some of the common faults that might occur are as follows.
- The thermal fuse might have blown out, shutting the power to the dishwasher. This could happen during an overload of power to prevent the possibility of overheating. So, this fuse needs to be replaced.
- Control board defects can also lead to the malfunction of the dishwasher. Since this is a computerized piece that transmits power to the other components, any error in it would prevent the transmission of enough power to start the dishwasher. Hence, this component would have to be replaced.
- Defective timers can also lead to improper function of the dishwasher. Let’s identify this in detail.
The timer is a critical part that is mandatory in the execution of a dishwasher. It controls the power in every compartment. So, a faulty timer would result in improper power distribution to various parts of the dishwasher and lead to additional issues. So, checking its function is very essential. If it does not work properly, then the timer would have to be replaced.
If the dishwasher won’t start but has power, then there might be an issue with the motors as well. You need to check the motor underneath the pump cover and filter assembly. Clogging of material can also lead to this.
Inadequate Water Supply
Insufficient water supply might also be the reason that the Bosch dishwasher won’t start the cycle. There are few methods to troubleshoot this problem.
If the cycle was interrupted, then the water filling might be stopped halfway. You would have to reset the cycle to overcome this problem.
Check the water supply of the dishwasher. If the water valves are closed by any mistake, the dishwasher cannot fill the water. So look for any possible interruptions in the water supply; if there are any kinks in the supply line, make sure to get rid of them and reattach the water supply and turn on the valves.
There is a small hose filter inside the dishwashers to prevent impurities in the water from getting inside the washer. Over time, sediments can get built up in this filter. So, disconnect the water supply hose and clean the filter thoroughly to remove any material formation on it. Then install the hose line again and open the water supply to check the function.
You need to check whether the water pressure is enough for the operation of the dishwasher. To test this, you can use a 1-gallon container and check the time it takes to get filled. For adequate water pressure, this container should get filled within 30 seconds. Taking more time to get filled would imply that there is no enough pressure to run the dishwasher effectively. So you would have to solve this water pressure problem.
If the dishwasher has not drained the water from the previous cycle, then it would not take in new water for the next cycle. So improper draining of water would create a pool of water inside the dishwasher. You can locate the large object trap under the bottom tray. Remove the bottom tray and turn the top of the object trap counterclockwise for a one-quarter turn. This would allow you to lift it out. Then remove any large objects trapped inside and clean the mesh filter thoroughly. Then reinstall the trap by reversing the removal procedure. Close the door, and if the water drains, the next cycle can be started.
Water Inlet Valve
The water inlet valve of the dishwasher is located inside the bottom front, behind the kick panel. This is operated through electricity, and you can check its functionality. For safer reach, the Bosch power cord should be removed from the outlet, or the power should be shut off from the circuit breaker.
Then unscrew the two screws on either side and remove the kick panel. Detach the screws that hold the door panel in place. Then the door panel should be removed and kept aside. Then the water inlet valve can be accessed. Two wires are used to connect the circuit. Check for any faults like detachment or damages. Also, check for any leaks and damages to the valve. If there are any visible issues, you can replace the parts using the correct model number. If the problems are complex, you can contact your technician to get them repaired.
Getting help from a Technician
If you have done all the mentioned troubleshooting and still get the same results of the Bosch dishwasher not starting, then you would have to contact a technician. As they are well-experienced in the field with years of hands-on experience, they can easily detect faults. They will help you to troubleshoot and find the reason that your Bosch dishwasher won’t start. So keep in touch with a reputable technician to get your problems solved.
It would be so relieving if you could get your dishwasher problem fixed by following the necessary troubleshoot procedures. But some dishwasher brands cannot be fixed so easily and might even have to be replaced. Therefore, if you are purchasing a new dishwasher, knowing the Dishwasher Brands to Avoid is necessary. There are similar recommendations regarding other home appliances such as Washing Machine Brands to Avoid, Refrigerator Brands to Avoid, and Water Heater Brands to Avoid.