Amana · Refrigerator Serious

CF — Communication Failure (Main Control ↔ User Interface)

CF on the freezer display indicates a communication failure between the main control board and the user interface control, not a condenser fan fault.

Keep using it?
Limited use only
DIY difficulty
Moderate

How to fix it

  1. Unplug the refrigerator or trip its breaker for a few minutes, then restore power.
  2. Check the harness connections between the main control board and the user interface control.
  3. If reseating the harness doesn't clear CF, replace the user interface control first.
  4. If CF persists with a known-good user interface, replace the main control board.

Why it happens

Typical signs: CF code on the display · Display freezes or shows no response to button presses · Refrigerator continues to run but the display/UI stops updating

  • Loose or damaged harness between main control and user interface The wiring connecting the two boards has a bad connection.
  • Failed user interface control The UI board itself has failed.
  • Failed main control board The main board's communication circuit has failed.

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.

  • Amana refrigerator user interface control board Common replacement
    Amazon →
  • Amana refrigerator main control board Common replacement
    Amazon →

More Amana refrigerator codes

F8E1 F8E1 — Temperature-Sensor / Ice-System Fault F8E2 F8E2 — Temperature-Sensor / Ice-System Fault Filter / Replace Filter Filter — Replace Water Filter Reminder LOC / Control Lock LOC — Control Lock Engaged PO PO — Power Outage Alert SA SA — Sabbath Mode Active

All Amana codes → All refrigerator codes →

Frequently asked questions

What does the CF code mean on a Amana refrigerator?

CF on the freezer display indicates a communication failure between the main control board and the user interface control, not a condenser fan fault.

What causes the CF code on a Amana refrigerator?

Loose or damaged harness between main control and user interface: The wiring connecting the two boards has a bad connection. Failed user interface control: The UI board itself has failed. Failed main control board: The main board's communication circuit has failed.

Is it safe to keep using a Amana refrigerator with a CF error?

Limited use only. This is rated a serious-severity fault.

How do I fix CF on a Amana refrigerator?

Unplug the refrigerator or trip its breaker for a few minutes, then restore power. Check the harness connections between the main control board and the user interface control. If reseating the harness doesn't clear CF, replace the user interface control first.

Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.