Customer Questions and Answers for Control Unit (Electronic Control Board) by Bosch

Electronic control unit that manages an appliance's cycle sequencing, user inputs and component signals. Replacing a faulty control unit restores correct control response and cycle operation by restoring the module that coordinates sensors, valves and motors. What it does:

• Acts as the appliance's main electronic control, sending and receiving commands to pumps, valves, heaters and motors.
• Interprets user inputs and cycle selections to run programmed operations.
• Common symptoms of a failing unit: unresponsive controls, display errors or blank display, cycles that won't start or won't advance.
• Used when electronic faults or intermittent behavior point to a defective control module.

• Always disconnect power at the breaker before servicing electrical components.
• Document wiring and take photos before removal to ensure correct reconnection.
• Handle the board by its edges and avoid static discharge; use ESD protection if available.
• If mounting screws, brackets or connectors are not attached to the new unit, reuse the originals.