Published September 2, 2026Updated October 17, 2026
Content status:
Verified
Error codeE03 / SE
ApplianceMicrowave
Quick answer
Both E03 and SE on a JennAir over-the-range microwave point at the keypad (user interface) or its wiring, and JennAir lists a one-minute breaker reset.
Model compatibility: JennAir reuses codes across series and model years, so E03 / SE may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
E03 and SE indicate a possible problem with the keypad (user interface) or its wiring.
Keypad trouble on an over-the-range unit
Look at the manufacturer’s over-the-range microwave page and you will find E03 and SE filed under the keypad. E03 is worded as the user-interface keypad having told the control board about a problem. SE is worded more simply: something is wrong with that keypad or the wiring attached to it.
The two entries side by side
E03: the keypad sent a problem report to the control board, so the keypad or wiring may be involved.
SE: a keypad or wiring problem.
Think of the control board as the circuit board that runs the microwave, with the keypad passing your button presses to it. Nothing in the source explains what failed between them.
Start with the breaker
Turn this microwave’s circuit breaker off and let one minute go by.
Turn the breaker on again.
Spend another minute monitoring the unit for a returning code.
Verify microwave operation.
If the display comes back
That reset is the last owner step JennAir lists. The page adds that a qualified technician might be needed, so a repeat of E03 or SE is the signal to book. Leave the cabinet closed; do not inspect keypad wiring yourself.
E11 and E12: E-series as well, but about the gas sensor
E13: the appliance control board, with a pre-heat problem
Over-the-range microwave service in Los Angeles
If E03 or SE comes back after the reset, call us in Los Angeles at (310) 622-9465. Please have the code and the model number at hand, and say that you already tried the breaker. See also our microwave repair information.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your JennAir appliance?
Book a specialist visit for a clear estimate and approval before any repair.
