KitchenAid Dryer Error Code F28 — What It Means & How to Fix It

What Does This Error Mean?

F28 means the serial communication link between the main control board and the motor control board was interrupted or lost. The two boards must communicate continuously during every cycle — when the signal drops, the dryer stops. A power reset resolves most F28 faults; persistent errors usually point to a loose harness or a failed motor control board.

Affected Models

KitchenAid Front-Control Dryer
KitchenAid KHED Series
KitchenAid YKEDB Series
KitchenAid Artisan Series Dryer

Common Causes

Communication signal between the main board and motor control board dropped out
Wiring harness connector between the two boards is loose or unseated
Power surge disrupted the serial communication link during a cycle
Motor control board has an internal failure preventing it from responding to the main board
Main control board has a fault in the communication circuit

How to Fix It

Unplug the dryer for 5 full minutes, plug back in, and start a new cycle.

F28 caused by a power surge or transient dropout clears with a full power reset. This resolves the majority of F28 errors.
If F28 returns, check the wiring harness connecting the main board and motor control board.

These boards are connected by a multi-wire harness. A connector that has worked loose is a common cause of intermittent F28.
Disconnect the harness connector, inspect the pins, and reconnect firmly until it clicks.

Do this with the dryer unplugged. A loose connector can cause F28 mid-cycle when vibration disrupts the connection.
If the harness checks out, have a technician test both boards.

Board failures require a signal test to confirm which has failed. Replacing the wrong board is expensive — confirm the diagnosis first.

When to Call a Professional

If F28 persists after a power reset and harness check, a technician should test both boards to confirm which has failed before ordering parts.

Frequently Asked Questions

Can F28 appear mid-cycle?

Yes. A loose harness connector that makes intermittent contact can drop the communication link when vibration disrupts it. If F28 only appears during heavy loads or at high drum speeds, check the harness for sections that run near the drum.

Is F28 always a board failure?

No. A loose wiring harness is a common cause that requires no parts replacement. Only if the harness is firmly connected and F28 persists should a board replacement be considered.

How much does a motor control board replacement cost?

A replacement motor control board for a KitchenAid dryer typically costs $80 to $200 for the part. With technician labor, the total repair usually runs $200 to $350.