Written by
Nadia Okafor Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeC-A1 / CA1
ApplianceMicrowave
Spotted CA1 on a Samsung microwave? Samsung’s table reads it as a functional error. C-A0 and C-A2 read the same way in the list.
The code in short
Shows as: C-A1, sometimes CA1
Samsung calls it: functional error
Series: It belongs to the code set for today’s Samsung microwave line.
If C-A1 stays on the display
Shut the microwave down completely by pulling its plug or flipping the breaker. When spilled liquid or steam rising from a cooktop has touched the microwave, allow it to dry completely. If it is dry, wait 60 seconds and then restore power. A repeat of CA1 on the display is the cue to ask for service.
Related microwave codes
C-A0 is the entry for a functional error. C-A2 is the entry for a functional error. C-72 is the entry for a steam sensor error.
Microwave repair in San Francisco and the Bay Area
Samsung microwave trouble in the Bay Area, San Francisco included, goes through (415) 969-6153. Our Samsung microwave repair page covers the service; before calling, note the code, find the model number and recall what you tried.
Model compatibility: Samsung reuses codes across series and model years, so C-A1 / CA1 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
On a Samsung microwave, C-A1 reports a functional error.
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.
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Book a repair online or call us — clear estimates and approval before any repair work begins.
