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Samsung Mini Split C123 Error Code
Quick answer
C123 means Motion sensor error. Advisory Technician Breadth evidence 5 published catalog models on its documented product line. Manual applicability notes: Samsung R-32 residential ductless diagnostics anchored to WindFree Premium and used as common Samsung C-code homeowner guidance for current R-32 residential mini-split coverage. Safe first check Turn the system off with the remote, then power cycle once at the breaker or disconnect if you can do that safely. Expected result: a temporary sensor fault clears; if.
Severity: high · DIY difficulty: intermediate
Safety
TBD - must be written per-code before publish
What C123 means
C123 means Motion sensor error. Advisory Technician Breadth evidence 5 published catalog models on its documented product line. Manual applicability notes: Samsung R-32 residential ductless diagnostics anchored to WindFree Premium and used as common Samsung C-code homeowner guidance for current R-32 residential mini-split coverage. Safe first check Turn the system off with the remote, then power cycle once at the breaker or disconnect if you can do that safely. Expected result: a temporary sensor fault clears; if.
Causes, ranked
Causes not yet documented — verify against the service manual.
Sources
- SplitAtlas manual-sourced reference — verified 2026-08-29