What E3 Means
E3 indicates a door system malfunction — the door isn't latching shut properly, or it won't release when you press the open button.
Common Causes of E3
- Worn or misaligned door latch mechanism
- Failed door switch
- Debris obstructing the door seal
🔧 One Safe Check You Can Try
Check the door seal and latch area for visible food debris or damage, and gently ensure nothing is obstructing the door from closing fully.
⚠ Why You Shouldn't Go Further Than That
- Continuing to use a microwave with a door that won't latch or seal properly is a safety interlock issue, not just an inconvenience.
- The door switch sits near the microwave's high-voltage components; testing it without disconnecting power is a shock risk.
- A misaligned latch adjustment can make the door appear to close while not fully engaging the safety interlock.
- Replacing the door switch without confirming it's the actual fault (versus a worn latch) is a common, avoidable expense.
- Door assembly access typically voids the remaining warranty on the unit.
Still Seeing E3?
Book a factory-trained technician and get it diagnosed correctly the first time — no guesswork, no repeat visits.