E9
Bosch
Control Panel Keypad or Touch Interface Failure
Display shows E9 and the interior temperature cannot be adjusted or remains at one value
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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 touch control panel, Moisture ingress behind glass control surface, Loose ribbon cable between keypad and display PCB, Failed display/control PCB
How to Fix / Troubleshooting
Safety: Disconnect power before removing the control panel or glass touch interface.
Steps to address E9:
- Clean the control surface: Wipe the touch panel with a soft, dry cloth. Avoid excessive moisture or cleaners that can seep into the panel.
- Power reset: Unplug the cooler for several minutes, then reconnect to see if the keypad responds normally.
- Inspect connections: Remove the trim around the control panel and carefully access the keypad ribbon cable. Ensure it is fully seated and not damaged.
- Check for moisture: Look for condensation or water marks inside the control housing. Allow the area to dry completely before reassembly.
- Replace keypad or display PCB: If keys remain unresponsive or E9 persists, replace the touch control panel or display PCB assembly according to Bosch service documentation.
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Repair Difficulty
Medium
3/5
Required Part
Touch Control Panel
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