Written by
Adrian Soto Appliance Repair Content SpecialistPublished September 5, 2026Updated October 20, 2026
Error codeC-A0 / CA0
ApplianceMicrowave
Quick answer
C-A0 (CA0) is a functional error on a Samsung microwave. Unplug, let it dry or wait, then request service if it returns.
Model compatibility: Samsung reuses codes across series and model years, so C-A0 / CA0 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
C-A0 is a functional error on a Samsung microwave.
C-A0, also written CA0, is the Samsung microwave code for a functional error. Newer, current-generation Samsung microwaves carry this entry.
What C-A0 means
In the table, C-A1 and C-A2 share one line with it, and the wording for that line is a functional error.
Reset and check
Start by removing power, either at the plug or at the breaker.
After contact with a spill or cooktop steam, leave the microwave alone until it has dried.
If nothing got wet, give it 60 seconds and power it up again.
Los Angeles owners can phone (310) 896-4231 to arrange service on a Samsung microwave. Tell us the code, give the model number, and say whether the unplug-and-wait reset changed anything. You can also read about microwave repair.
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.
