Samsung Range tESt Error Code — Meaning & Causes (2026)
Demo mode active — won't heat. Below: what triggers it and what to check — this code carries no single repair to price. Reviewed July 2026.
What tESt means
Demo mode active — won't heat.
Likely causes, most common first
- Store/demo mode enabled; disable it
Base: ApplianceRepairService.ca fault-code library · Code meaning & causes · Reviewed July 2026
No single repair to price for this code
tESt doesn't point at one failed component, so we don't attach a price module — forcing a repair mapping here would be dishonest. If the code keeps returning, the underlying symptom (not the code) is what gets priced: browse the range / stove / oven repair costs for the problem you're actually seeing.
Codes are universal — your location changes the repair price, never the code's meaning. See the methodology for the exact localization formula and sources.
Reviewed by a Red-Seal certified appliance technician.