Samsung · Microwave Moderate

C-F0 — Communication Error

C-F0 (C-F1/C-F2) means a communication error between the control board and another component.

Keep using it?
Yes, with caution
DIY difficulty
Moderate
Verified against
samsung.com ↗

How to fix it

  1. Unplug for a minute to reset.
  2. If C-F0 returns, inspect the inter-board connectors; control-board service may be needed.

Why it happens

Typical signs: Erratic operation or no response · C-F0 on the display

  • Harness/connector fault A loose or damaged connector between boards.
  • Failed control board A board has lost communication.

Parts you may need

If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.

  • Samsung Microwave Control Board Common replacement
    Amazon →

More Samsung microwave codes

5E 5E / SE — Touchpad Shorted (Older Spelling) C-21 C-21 — Cavity Over-Temperature C-22 C-22 — Temperature Sensor Error C-A0 C-A0 — Functional Error C-A1 C-A1 — Functional Error (Damper / Sensing) C-A2 C-A2 — Functional Error

All Samsung codes → All microwave codes →

Frequently asked questions

What does the C-F0 code mean on a Samsung microwave?

C-F0 (C-F1/C-F2) means a communication error between the control board and another component.

What causes the C-F0 code on a Samsung microwave?

Harness/connector fault: A loose or damaged connector between boards. Failed control board: A board has lost communication.

Is it safe to keep using a Samsung microwave with a C-F0 error?

Yes, with caution. This is rated a moderate-severity fault.

How do I fix C-F0 on a Samsung microwave?

Unplug for a minute to reset. If C-F0 returns, inspect the inter-board connectors; control-board service may be needed.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician. Verified against manufacturer documentation: samsung.com.