Error Code C-20
Oven temperature sensor open (resistance over 2950 ohms) or shorted (resistance under 930 ohms)
Moderate
Address soon - your appliance may not work properly
What This Means
Oven sensor resistance out of normal range (normal: 1080 ohms at room temperature); Damaged terminal or wire on sensor harness; Faulty main PCB (connector CNS301, normal resistance 2850 ohms)
How to Fix
- 1
Disconnect power and open the back cover
- 2
Disconnect sensor harness from control board
- 3
Measure sensor resistance; normal is 1080 ohms at room temperature
- 4
If sensor resistance is abnormal, replace oven sensor
- 5
Check harness for damaged terminals or broken wires
- 6
Measure resistance at oven sensor connector CNS301 on main PCB (normal: 2850 ohms)
- 7
If PCB connector is abnormal, repair or replace main PCB
Other Error Codes for NX58M6650WS
Main PCB to Touch module communication error
Oven overheating — oven temperature exceeds 650°F (343°C) in any cooking function except self-clean
PCB ambient temperature too high — temperature around PCB is excessive
Shorted keypad key detected
PCB internal sensor opened (over 3900 ohms) or shorted
Door locking mechanism error — door lock motor or switch malfunction