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

Control board is overheating - potential safety shutdown PCB temperature rises abnormally; Short circuit on Main PCB; Poor ventilation around oven

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

1. undefined: Check for proper oven ventilation 2. undefined: Verify no items blocking air circulation 3. undefined: Inspect Main PCB for visible damage or burned areas

Samsung Ovens & Ranges2017–present

Error Code C-31

Control board is overheating - potential safety shutdown

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-31

What This Means

PCB temperature rises abnormally; Short circuit on Main PCB; Poor ventilation around oven

What actually causes this:

Blocked ventilation holes, damaged internal components creating excess heat, or Main PCB short circuit

First Thing to Check

Ensure oven is installed with proper clearances and ventilation holes are not blocked

Parts Involved

Main PCB

How to Fix

1
Check for proper oven ventilation
2
Verify no items blocking air circulation
3
Inspect Main PCB for visible damage or burned areas

This Error Applies To

Samsung DOB30M977D Series Ovens & Ranges (2017) (2017–present)

Service manual exact match: DOB30M977D*

Related Error Codes

C-72

Steam drainage pump not removing water completely

C-30

Internal PCB thermal protection sensor not responding

C-A2

Cooling fan motor not responding to control signals

C-d1

Door lock mechanism is not responding or is stuck

C-F0

Central control PCB cannot communicate with display control board

C-F2

Touch panel cannot communicate with main control board

C-20

Temperature sensor is disconnected or failed - oven cannot measure temperature

C-70

Steam function cannot measure steam temperature

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