Samsung / WindFree Premium
Samsung TEST COOLING status display
Test cooling means the outdoor unit is in a service test mode. It is not a normal homeowner repair code. Manual trigger: Test cooling is an outdoor-board service/test indication.
- Urgency
- informational
- Verified
- Jul 30, 2026
- Fix path
- Not an error
What it means
Test cooling means the outdoor unit is in a service test mode. It is not a normal homeowner repair code. Manual trigger: Test cooling is an outdoor-board service/test indication.
Urgency
Not an error
This is a normal status indication, not an error, unless comfort is poor, water is present, or the indication never clears.
Likely causes
- Temporary control memory or startup fault
- Incorrect board setup after installation or service
- Loose board connector or harness problem
- Failed indoor, outdoor, display, or main PCB
Homeowner fix
If a technician started the test, let them finish. If it appears during normal use and will not clear, turn the system off once and call for service.
When to call a pro
Call the installing contractor if the unit is stuck in test cooling or test heating.
Repair vs replace
This is a normal operating status, not a repair-or-replace decision.
Your 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: the Section 9 index conflict for C422 mentions test operation at cooling mode, so confirm whether the display is a service status or a C422 fault. Page context: Samsung maps this display to the WindFree Premium line; source: Samsung WindFree Premium R-32 Service Manual; display convention: match the letter T, letter E, letter S, letter T, letter C, letter O, letter O, letter L, letter I, letter N, and letter G 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.
Manual trigger
Test cooling is an outdoor-board service/test indication.
Related codes
Source
- Section
- Section 9 troubleshooting index, outdoor error list
- Page
- Section 9 troubleshooting index
Short quote: "Test operation at Cooling mode"
Sourced Jul 2026