Samsung Range C-24 — What It Means & How to Fix It
Also shown as C24 on some models.
C-24 is Samsung's fast-temperature-rise warning: the cavity heated quicker than expected, most often because the vent on the back of the cooktop is covered.
What this code means
C-24 means the temperature sensor measured the cavity climbing faster than the board considers normal. Samsung's own troubleshooting leads with airflow: the vent on the back of the cooktop is blocked by a pan, foil, or a folded-down backguard, so the heat that should escape stays in the cavity and the temperature ramps too quickly. Less commonly the code reflects a heating element that stayed energized when it should have cycled off — the distinction matters, because that half is a safety repair.
Samsung lists C-24 as 'temperature rising faster than normal' and gives an explicit clearing procedure (remove the vent obstruction, open and close the door a few times, then cool with the door open). Model number is on the frame behind the storage drawer or the oven door frame.
Most likely causes
| Cause | How likely | DIY-fixable? |
|---|---|---|
| Vent on the back of the cooktop covered by a pan or item | Very common | Yes — no tools |
| Folded-down backguard or loose trim restricting the vent | Common | Yes — no tools |
| Bake element relay stuck, heating continuously | Occasional | No — technician job |
| Sensor drift making the rise look faster than it is | Less common | No — technician job |
What you can try yourself
- Check the vent on the back of the cooktop for anything covering it — a pan, a cutting board, foil, or a lid parked there mid-cook is the top cause.
- Clear the obstruction, then (while cooking) open and close the oven door a few times, about three seconds each time, to release warm air through the vent — Samsung's official clear.
- Alternatively, turn the oven off and leave the door open for about a minute to let the cavity cool below the threshold.
- If C-24 repeats with nothing covering the vent, stop and have a technician verify the bake element circuit isn't staying energized.
When to call a technician
- C-24 returns after the vent is clear and the door-open cool-down is tried.
- The cavity gets visibly hotter than the setpoint and keeps climbing.
- Smoke or a burning smell from the back of the range.
Typical professional repair cost: No cost when a vent obstruction caused it; a stuck element or relay repair typically runs $150–$400 including labor.
Frequently asked questions
Why does a vent blockage make the oven trip C-24 instead of just cooking hot?
The sensor sees temperature rising fast and the board treats a too-rapid climb as a control problem, not just a hot oven. Clearing the vent restores the airflow the temperature curve depends on.
Do I need to lose my whole cook if C-24 shows?
Usually not — Samsung's procedure is designed to clear the code mid-cook: remove the vent obstruction and cycle the door a few times. The oven resumes heating normally once the reading returns to the expected curve.
What if C-24 shows on a wall oven with no cooktop vent?
On wall ovens the equivalent blockage is the unit's own vent opening, usually above the door or at the top. Confirm it isn't pressed against a cabinet or covered, then apply the same cool-down steps.
Sources checked
Error meanings can vary by model. This guide was checked against the documentation above; use the manual for the model number on your own appliance when it differs.
Related Samsung codes
- Samsung Range C-20 C-20 is Samsung's oven temperature sensor error: the sensor circuit reads open, shorted, or out of range, so the control board can't trust the cavity temperature.
- Samsung Range C-21 C-21 is Samsung's over-temperature code: the oven sensor detected the cavity hotter than the setpoint and shut heating down to protect the unit.
- Samsung Range C-F0 C-F0 is Samsung's communication error between the main control board and the display: the two stopped talking. A restart clears most cases; induction models have an official software-update fix.
- Samsung Range S-01 S-01 is Samsung's safety shutoff: the oven ran continuously at its set temperature for hours and the board switched it off. It's a protection feature, not a fault — turn it off, remove the food, and use it normally.
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