CF — Communication Failure
Communication failure between the main control board and the user interface (dispenser/display) board. Functionally identical to F6 E1 on newer French-door models; older side-by-sides show 'CF' instead.
- Keep using it?
- Limited use only
- DIY difficulty
- Moderate
- Verified against
- removeandreplace.com ↗
How to fix it
- Unplug the refrigerator for 5 minutes.
- Inspect the harness from the door (or top hinge) to the cabinet — repair any chafed wires.
- Reseat the connectors at both the user interface board and the main control board.
- If wiring is intact, replace the user interface (dispenser) board first.
- Replace the main control board if a new UI does not resolve the fault.
Why it happens
Typical signs: 'CF' on display · Buttons unresponsive · Display blank or scrambled · Dispenser inoperative
- Loose wire harness Cable through the door hinge has chafed or unseated.
- Failed user interface board Dispenser PCB has failed on the comms side.
- Failed main control board Main control's comms transceiver has died.
Replace your water filter
A clogged or overdue water filter is a common cause of low water and ice flow on Whirlpool refrigerators — they are meant to be changed about every 6 months. The OEM-style filter that fits most Whirlpool refrigerators is the EDR1RXD1 ($40-50 OEM, $15-25 compatible).
- Whirlpool EDR1RXD1 refrigerator water filter OEM water filterAmazon →
Not sure which filter fits your model? See the full compatibility guide →
More Whirlpool refrigerator codes
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: removeandreplace.com.