Samsung / WindFree Premium
Samsung C500 error code
C500 is Condenser temperature (CON-TH) sensor error. The unit is stopping or limiting operation because that reading or component cannot be trusted. Manual trigger: C500 means Condenser temperature (CON-TH) sensor error.
- Urgency
- advisory
- Verified
- Jul 30, 2026
- Fix path
- Technician
What it means
C500 is Condenser temperature (CON-TH) sensor error. The unit is stopping or limiting operation because that reading or component cannot be trusted. Manual trigger: C500 means Condenser temperature (CON-TH) sensor error.
Urgency
advisory
This is not usually an immediate safety hazard, but do not keep resetting it. Try only the safe homeowner check below; if the same code returns, schedule service.
Likely causes
- Dirty filters, blocked coil airflow, or an outdoor clearance problem increasing pressure or temperature
- Low charge, overcharge, leak, or refrigerant-flow restriction
- Discharge, pressure, or refrigerant sensor reading outside range
- Compressor, valve, or outdoor board issue after airflow and charge are verified
Homeowner fix
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 C500 returns, stop resetting and schedule service. Do not remove panels.
When to call a pro
Call a licensed HVAC technician if C500 returns after the safe homeowner check. Tell them the exact Samsung code and meaning: Condenser temperature (CON-TH) sensor error.
This code points to refrigerant or sealed-system, compressor, and electrical or inverter work - get repair quotes from contractors in your area.
Get repair quotesRepair vs replace
Sensor and control faults are usually repairable. Compare repair with replacement only if the system is older, out of warranty, or several sensors or boards are being quoted together.
See Samsung mini-splitsYour Samsung model
WindFree Premium model pages in the Samsung catalog help compare this repair path with current replacement options.
- Samsung WindFree Premium 9,000 BTU R-32 208/230V (AR09DXDABWKN / AR09DXDABWKX)
WindFree Premium
- Samsung WindFree Premium 12,000 BTU R-32 208/230V (AR12DXDABWKN / AR12DXDABWKX)
WindFree Premium
- Samsung WindFree Premium 15,000 BTU R-32 208/230V (AR15DXDABWKN / AR15DXDABWKX)
WindFree Premium
- Samsung WindFree Premium 18,000 BTU R-32 208/230V (AR18DXDABWKN / AR18DXDABWKX)
WindFree Premium
For your technician
Technician note: verify condenser temperature (CON-TH) sensor placement, resistance, connector condition, harness continuity, and PBA input before replacing parts. Page context: Samsung maps this display to the WindFree Premium line; source: Samsung WindFree Premium R-32 Service Manual; display convention: match the letter C and five hundred marker exactly before comparing neighboring codes.
Which systems show it
- 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.
Related troubleshooting
Use the symptom guide alongside the exact display code if the unit is flashing, cycling, or showing comfort symptoms.
Reset note
Power cycle once only if the homeowner fix says it is safe; do not keep resetting a returning code.
Manual trigger
C500 means Condenser temperature (CON-TH) sensor error.
Related codes
Source
- Section
- Section 9 troubleshooting index, outdoor error list
- Page
- Section 9 troubleshooting index
Short quote: "Condenser temperature (CON-TH) sensor error"
Sourced Jul 2026