Safety first: Unplug the microwave before touching the control panel area.

Steps to address E09:

1. Check for moisture: If the microwave is installed above a range, steam may enter the control panel. Leave the door open and allow the unit to dry for several hours. Do not use it during this time.
2. Test keypad response: After drying, plug in and test multiple buttons. If some keys do not respond or trigger E09, the keypad membrane may be failing.
3. Clean the panel surface: Wipe the keypad gently with a slightly damp cloth and mild detergent, then dry thoroughly. Do not spray cleaner directly onto the panel.
4. Power reset: Unplug for 5 minutes, then plug back in to clear temporary logic errors.
5. If E09 persists: The keypad assembly or display PCB likely needs replacement. This involves removing the control panel and disconnecting ribbon cables.

Note: Because the control area is close to live mains and high-voltage wiring, keypad replacement should be done by a qualified technician.

Microwave shows E09 and beeps; keypad and display may freeze intermittently.

Possible Causes