bosch dishwasher wont start

Bosch Dishwasher Not Starting? Here’s Where to Start.



It never fails: only when the dishwasher is fully loaded with dirty dishes do you discover that it just won’t start. Why won’t my Bosch dishwasher turn on? It won’t begin a wash cycle if the door isn’t completely closed and the latch is engaged. Learn the most common reasons for a Bosch dishwasher not starting with these troubleshooting tips.

How to Troubleshoot a Bosch
Dishwasher Not Starting

As reliable as a Bosch dishwasher can be, common part failures can still plague this kitchen convenience. However, outside issues, such as power and water supply problems, are just as likely, requiring only a simple adjustment. We’ll provide the troubleshooting know-how to determine what’s responsible for your Bosch dishwasher not starting.

1-Dishwasher Doesn’t Have Power

A Bosch dishwasher won’t start without a steady flow of electricity. When a dishwasher doesn’t have power the control panel won’t illuminate or respond to your commands.

Here’s how to assess your dishwasher’s power sources:

  • Check the power switch: Check the dishwasher’s kitchen switch to make sure it’s in the on position. Keep in mind that the switch may be in a cabinet under the kitchen sink.
  • Make sure it’s plugged in: Make sure the dishwasher’s electrical cord is properly plugged into a functioning outlet. Never use an extension cord to power your dishwasher, as it can’t safely transmit the voltage required.
  • Look for tripped breakers: Inspect your home’s circuit breaker panel and reset any tripped breakers.

2-Need to Adjust Dishwasher Settings

Sometimes the wrong setting or start process will prohibit an immediate start to a wash cycle. Wondering how to start a Bosch dishwasher? You must select a cycle before pressing the START button. The dishwasher won’t begin washing if a cycle isn’t selected.

The following settings or displays could prevent your dishwasher from starting:

  • Child lock: Locks all control panel functions to prevent an accidental start. When the Bosch dishwasher child lock function is enabled, “CL” will appear on the control panel. To turn off Control Lock, press and hold the corresponding button for approximately 4 seconds until the letters disappear.
  • Delay start: Delays the start of a wash cycle to a predetermined later time. To turn off the Delay Start function press and hold the DELAY button until the display reads h:00. Press START to save the setting.
  • Error codes: If the dishwasher displays an error code it could be communicating a problem that’s prohibiting an immediate start. Check your Bosch dishwasher manual to determine the meaning of the error code and how to solve the problem.
how to start a bosch dishwasher
Image Courtesy of A Garden for the House

If your dishwasher’s control panel doesn’t respond to your setting commands, it may be damaged by moisture or malfunctioning electronically. In this case, the panel may require a professional assessment.

3-Dishwasher Door Not Closed and Latched

To prevent leaks, a wash cycle will not start unless the dishwasher’s door is securely closed and latched. Always close the door with a firm push to ensure it’s completely closed and engages the door latch. Once the latch is engaged, it secures the door and signals the door switch to start a wash cycle via the main control board.

If the door is closed properly and the latch still doesn’t engage, the latch may have suffered a mechanical or electrical failure. When this happens it won’t signal the door switch or control panel to begin washing and requires professional replacement.

4-Incoming Water Supply Issues

If you find your Bosch dishwasher not starting or filling with water but has power, there may be a water supply issue. Check the dishwasher’s connection to your home water supply, making sure it’s secure and the supply is turned on. Inspect the water line for kinks that can restrict water flow, prohibiting a wash cycle from starting. Gently straighten any kinks or replace a damaged water line.

Lastly, inspect the water inlet valve for signs of damage. This valve opens and closes, allowing water to flow to the dishwasher from your home supply. If the valve malfunctioned and remains closed, the dishwasher won’t have access to water to begin a wash cycle. A valve that’s damaged or fails multimeter testing with a lack of continuity must be professionally replaced.

bosch dishwasher not starting
Image Courtesy of Bosch

5-Defective Dishwasher Components

If these troubleshooting tips still don’t solve the problem, a defective part may be responsible.

The following part failures can result in a Bosch dishwasher not starting, requiring assessment by a professional dishwasher repair service:

  • Door switch: When activated by the door latch, the door switch signals the control board to begin a wash cycle. If the switch shows a lack of continuity with multimeter testing it’s failed and won’t activate the control board to start the dishwasher.
  • Thermal fuse: If the dishwasher is in danger of overheating, the thermal fuse will blow, cutting off power to the control board. Multimeter testing can confirm that the fuse has blown with a lack of continuity.
  • Main control board: This computerized board powers all the dishwasher’s functions. If it’s defective, it won’t provide voltage in response to any commands and the dishwasher won’t start.

The team at AlphaTek Appliance Repair can handle any Bosch dishwasher repair. For fast dishwasher repair service, schedule an appointment today!