Samsung range and wall oven C-24: vent-area overtemp fault
C-24 means: Rapid temperature rise detected around the ventilation and control area — a cooling-airflow or over-temp sensing fault.
How to fix C-24
- Reset at the breaker for 5 minutes, then run a bake cycle and listen: the convection/cooling fan should spin as the oven heats.
- Check installation clearance and that no vents under or behind the range are blocked by cabinetry, foil or dust.
- Power off and test the over-temp thermistor on its connector (room-temperature reading in the same ~1,000 ohm class as the cavity sensor); replace if it is open or drifting.
- If the fan is dead, replace it before the control board cooks itself — heat is the cause, the board is the casualty.
- Recurring C-24 with a good fan and sensor points to the main PCB.
When to stop and call a repairer
Mains voltage on the PCB; fan replacement behind the control panel needs the range unplugged.
What it costs
Parts: Cooling fan $40 to $90; thermistor $15 to $35; main PCB $150 to $300.
Service: A home visit from an appliance technician runs $120 to $250 for diagnosis plus the part. Boards are the expensive part; sensors and switches are cheap.
Worth repairing? Yes if it is the fan or sensor; get a quote if the board is implicated.
How to check the error log
Samsung ovens do not have a user-accessible error log. The code stays on the display until you fix the cause or cut power at the breaker for 3 minutes; if it returns after a reset, treat it as real.
Clear the log after a repair so you can tell whether the fault has really gone.
FAQ
What does C-24 mean on the Samsung range and wall oven?
Rapid temperature rise detected around the ventilation and control area — a cooling-airflow or over-temp sensing fault. Samsung documents the C-24/C-25 family as a heating over-temp condition tied to the ventilation area: the electronics compartment is warming faster than the board expects. In practice it splits into three causes — a cooling fan that never spins up, blocked airflow around the range, or a failing over-temp thermistor reading a healthy area as hot.
Can I fix C-24 myself?
DIY difficulty: moderate. Reset at the breaker for 5 minutes, then run a bake cycle and listen: the convection/cooling fan should spin as the oven heats. Check installation clearance and that no vents under or behind the range are blocked by cabinetry, foil or dust.
How much does it cost to fix C-24?
Cooling fan $40 to $90; thermistor $15 to $35; main PCB $150 to $300. A home visit from an appliance technician runs $120 to $250 for diagnosis plus the part. Boards are the expensive part; sensors and switches are cheap.
Is it worth repairing?
Yes if it is the fan or sensor; get a quote if the board is implicated.
C-24 during startup or during use?
Samsung range and wall ovens report C-24 any. That timing is a useful clue when narrowing the cause.
Can I keep using the machine with C-24 showing?
Treat it as a stop-using signal: C-24 marks a fault that can damage the machine (or worse) if you keep running it. Do the safe first steps below, then stop.
Will C-24 clear on its own?
Sometimes. Try the reset and cleaning steps first — they cost nothing and clear the milder cases. A code that returns within a day or two needs the parts fix.
How long does the repair take?
Thirty minutes to an hour if you are comfortable opening the case; budget an afternoon the first time.
Code meanings are compiled from manufacturer service references and repair documentation for the NE / NX / NV / NZ; fixes follow documented repairs and owner reports. Model revisions can differ. If your appliance is under warranty, contact the manufacturer before opening it.