Written by
Adrian Soto Appliance Repair Content SpecialistPublished September 5, 2026Updated October 20, 2026
Error codetESt / tE5t
ApplianceRange
Quick answer
tESt (also shown as tE5t) means a Samsung range is in Demo mode. The oven and electric cooktop will not heat.
Model compatibility: Samsung reuses codes across series and model years, so tESt / tE5t 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
Range is in Demo mode; oven and electric cooktop will not heat.
If your Samsung range displays tESt or tE5t, it is in Demo mode. In this mode the oven and the electric cooktop will not heat. Gas cooktops will still ignite.
Turning Demo mode off
The steps differ from model to model, so open your user manual and follow the procedure for turning off Demo mode on your range.
If your range will not heat for another reason
S-01: a safety shutoff after a long run at one setting.
Need a hand with a Samsung range in Los Angeles? Reach us at (310) 896-4231. Before calling, note the code, the model number and the steps you have already tried; more about oven and range repair is on the oven and range repair page.
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.
