Written by
Adrian Soto Appliance Repair Content SpecialistPublished September 5, 2026Updated October 20, 2026
Error codeE-03
ApplianceMicrowave
Quick answer
E-03 on a Samsung microwave is a cooking time setting over error (grill). Try the manual's power reset and request service if it returns.
Model compatibility: Samsung reuses codes across series and model years, so E-03 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
Cooking time setting over error (grill).
The message E-03 on a Samsung microwave, also typed E03, belongs to the cooking time setting over error (grill) entry in Samsung’s list.
It is listed for Samsung microwaves in the current series.
Reset steps from the manual
Reset first. Pull the plug or flip the breaker off, let any moisture dry, and otherwise count to 60 seconds before turning the microwave on again. If E-03 keeps coming back, request service instead of repeating the reset.
Codes easily confused with E-03
E-02 is the cooking time setting over error (microwave) entry. E-04 is the cooking time setting over error (convection) entry. E-05 is the cooking time setting over error (combination) entry.
Samsung microwave repair in Los Angeles
Los Angeles owners can reach us at (310) 896-4231 when the display keeps showing the code. Our microwave repair page lists what we handle. Keep the model number and a note of what you already tried close by.
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 Samsung appliance?
Book a specialist visit for a clear estimate and approval before any repair.
