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Samsung Ovens & Ranges2017–present

Error Code C-F0

Main and sub control board communication failed

Critical

Stop using immediately - risk of damage or safety issue

Also displayed as: C-F0

What This Means

Loose or disconnected main PCB connector; Loose or disconnected sub PCB connector; Damaged wire harness between PCBs; Shorted connector pins on sub PCB; Main PCB failure

What actually causes this:

Loose connector, damaged wire, or circuit board failure preventing communication between control boards

First Thing to Check

Disconnect power and visually inspect all connectors between main and sub PCBs for loose or damaged pins

Parts Involved

Main PCBSub PCBWire HarnessPCB Connectors

How to Fix

  1. 1

    Disconnect power from appliance

  2. 2

    Check main PCB connector insertion

  3. 3

    Check sub PCB connector insertion

  4. 4

    Inspect wire harness between main and sub PCBs for damage

  5. 5

    Test for short circuits on connector pins

This Error Applies To

Samsung DOB30M977 Series Ovens & Ranges (2017) (2017–present)

Service manual exact match: DOB30M977DService manual exact match: DOB30M977S

Related Error Codes

C-F2

Touch panel control communication failure

C-30

PCB temperature sensor open or short circuit

C-A2

Cooling fan motor malfunction

C-20

Oven temperature sensor circuit is open

C-31

PCB overheating - internal temperature critically high

C-21

Oven overheating - internal temperature critically high

C-23

Meat probe sensor short circuit detected

C-72

Steam drain system not working - water remains after cycle

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