What does error code C-20 mean on a Samsung ovens & ranges?

Oven temperature sensor open circuit (resistance over 2950 Ohm) or shorted circuit (resistance under 930 Ohm) Oven temperature sensor resistance out of range; Damaged sensor harness or connector; Damaged terminal on main PCB connector CN320

How do I fix error code C-20 on a Samsung ovens & ranges?

1. undefined: Disconnect power. Open the back cover. Disconnect sensor harness from control. 2. undefined: Measure sensor resistance: normal is 1080 ohms at room temperature. 3. undefined: If resistance is over 2950 ohms or under 930 ohms, replace the oven sensor. 4. undefined: If sensor resistance is OK, check the connecting condition of harness between oven sensor and CN320 of main PCB. 5. undefined: If harness connection is bad: reconnect or repair/replace damaged harness. 6. undefined: If harness connection is OK, measure resistance of connector CN300 of Main PCB (normal: 2850 ohms). 7. undefined: If CN300 resistance is abnormal: check PCB pattern and soldering related to oven sensor circuit. Repair or replace main PCB.

Samsung Ovens & Ranges2015–present

Error Code C-20

Oven temperature sensor open circuit (resistance over 2950 Ohm) or shorted circuit (resistance under 930 Ohm)

Moderate

Address soon - your appliance may not work properly

What This Means

Oven temperature sensor resistance out of range; Damaged sensor harness or connector; Damaged terminal on main PCB connector CN320

How to Fix

1
Disconnect power. Open the back cover. Disconnect sensor harness from control.
2
Measure sensor resistance: normal is 1080 ohms at room temperature.
3
If resistance is over 2950 ohms or under 930 ohms, replace the oven sensor.
4
If sensor resistance is OK, check the connecting condition of harness between oven sensor and CN320 of main PCB.
5
If harness connection is bad: reconnect or repair/replace damaged harness.
6
If harness connection is OK, measure resistance of connector CN300 of Main PCB (normal: 2850 ohms).
7
If CN300 resistance is abnormal: check PCB pattern and soldering related to oven sensor circuit. Repair or replace main PCB.

This Error Applies To

Samsung NX58M9420S Series Ovens & Ranges (2015) (2015–present)

Service manual exact match: NX58M9420SSService manual exact match: NX58T9420SSService manual exact match: NX58R9420SSService manual exact match: NX58H9500W*Service manual exact match: NX58H9420SSService manual exact match: NX58M9420SService manual exact match: NX58*9420S*Service manual exact match: NX58H9500W

Related Error Codes

C-d1

Door locking error — door lock motor or switch malfunction during self-clean locking sequence

C-d0

Shorted touch keypad — a key on the glass touch control panel is shorted or stuck

C-F2

Communication error — Main PCB to Touch panel or Display PCB communication failure

C-F0

Communication error — Main PCB to VFD display module or Main PCB to Sub PCB communication failure

C-21

Oven overheating safety error — oven temperature has exceeded safe operating limit

Need more help with your Samsung ovens & ranges?