E15
Westinghouse
Control Lock / Software Logic Fault
Microwave shows E15 and the child lock feature cannot be disabled or behaves erratically.
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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
Stuck keypad button,Corrupted control board firmware,Moisture in keypad area,Defective user interface PCB
How to Fix / Troubleshooting
Safety first: Unplug the microwave before removing any control components.
User-level steps:
- 1. Try standard unlock sequence: Refer to your Westinghouse manual (often holding a specific key like STOP/CLEAR or a combination for 3–5 seconds).
- 2. Power reset: Unplug for 5–10 minutes, then plug back in and attempt to unlock again.
- 3. Dry the keypad: If the keypad has been exposed to steam or cleaning fluids, allow it to dry thoroughly.
Advanced steps:
- 4. Inspect keypad: Remove the control panel and check for signs of liquid intrusion or corrosion on the keypad ribbon cable.
- 5. Replace keypad or UI board: If certain buttons are stuck or shorted, replace the membrane keypad or entire user interface board.
If E15 or lock issues persist after keypad replacement, the main control board may require replacement.
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Repair Difficulty
Medium
3/5
Required Part
User Interface Board
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