Bosch Serie 6 Service Mode _best_ -

: On some models, hold the Hourglass and Info buttons simultaneously until you hear a beep, then briefly touch On/Off .

: Press and hold the Start and Fast Preheat buttons while rotating the cooking mode dial out of the Off position.

Bosch dishwashers usually hide their diagnostics behind the power and start buttons.

Checking the NTC thermistor (code C:00 ) to see if the water is actually reaching 70°C. bosch serie 6 service mode

For homeowners and appliance technicians alike, knowing how to trigger this hidden system menu saves hours of troubleshooting and prevents unnecessary part replacements.

What is it? (Washing machine, dishwasher, or dryer?) What exact error code or symptom are you experiencing?

How to Access and Use Bosch Serie 6 Service Mode: A Complete Technician's Guide : On some models, hold the Hourglass and

: Pressing Start while a program is selected will begin the specific test (e.g., filling, draining, or checking the heater).

Do not run the heating element test ( P5 ) repeatedly if the drum is empty, as this can damage the internal sensors.

Here is how you can access these "secret" menus across the Bosch Serie 6 lineup. 🛠️ Bosch Serie 6 Washing Machines Checking the NTC thermistor (code C:00 ) to

Practical troubleshooting uses (decisive, prescriptive)

. While holding it, turn the dial one more click clockwise to the 7 o'clock position .

If you want to dive deeper into a specific issue, let me know: What is showing on your display?

The control board detects that the drum cannot spin. On older Serie 6 models, this usually means the carbon brushes are worn down and need replacement. On newer EcoSilence models, it could indicate a jammed drum or a failed inverter module. Note: An F:21 error usually locks the machine completely and must be manually cleared in service mode after the repair.

To access the Service Mode (also known as test mode or diagnostic mode) on a Bosch Serie 6 washing machine, follow the standard "key dance" sequence to view error codes or run component tests. How to Enter Service Mode Preparation