E9
Bosch
Internal Control Board Failure
Bosch induction cooktop shows E9 and shuts down all zones.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Defective main control module, Firmware corruption, Severe power surge, Overheating damage to control electronics
How to Fix / Troubleshooting
Safety first: Turn off power at the breaker. Do not repeatedly reset if burning smell or smoke was present.
- Power cycle: Leave power off for 15 minutes, then restore. If E9 appears immediately, the control is likely failed.
- Check for visible damage: With power off and glass removed, inspect the control module for burned components or bulging capacitors.
- Surge protection: If the failure followed a storm or outage, consider installing a surge protector for the replacement unit.
- Replace control module: Replace the main control module following Bosch service procedures. Programming may be required on some models.
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Repair Difficulty
Professional Required
5/5
Required Part
Control Module
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