What does error code C-31 mean on a Samsung ovens & ranges?

Main control board temperature sensor reads excessive heat Excessive ambient temperature; Cooling fan failure; PCB internal short circuit

How do I fix error code C-31 on a Samsung ovens & ranges?

1. undefined: Check cooling fan operation 2. undefined: Verify cooling air path is not obstructed 3. undefined: Check for visible PCB damage or shorts

Samsung Ovens & Ranges

Error Code C-31

Main control board temperature sensor reads excessive heat

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-31

What This Means

Excessive ambient temperature; Cooling fan failure; PCB internal short circuit

What actually causes this:

Cooling fan malfunction, ambient heat, or internal PCB short

First Thing to Check

Verify cooling fan motor spins freely and cooling vents are clear

Parts Involved

Cooling FanMain PCB

How to Fix

1
Check cooling fan operation
2
Verify cooling air path is not obstructed
3
Check for visible PCB damage or shorts

This Error Applies To

Samsung DOC30P977D Series Ovens & Ranges

Service manual exact match: NQ70M9770DService manual exact match: DOC30P977DService manual exact match: NQ70M7770D

Related Error Codes

H-4

Broil heating element not energizing during self-test

-dC-

Partition configuration changed during active cooking cycle

C-A2

Cooling motor not responding to control signals

C-F2

Loss of communication between main control and touch display panel

C-72

Drain system unable to evacuate water within time limit

C-F0

Loss of communication between main control board and sub control board

C-20

Temperature sensor circuit is open - no resistance reading possible

C-10

Gas sensor output voltage out of acceptable operating range

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