What should I check first for Whirlpool washer error F15?

Unplug the washer, then check the wire harness connections on the motor control board.

What usually causes Whirlpool washer error F15?

A fault in the wiring to the motor and control units, or in the drive belt

F15High

Whirlpool washer error F15

F15 on a Duet is a motor control unit error.

Symptom
F15
Free checks
2 checks
Most likely cause
A fault in the wiring to the motor and control units, or in the drive belt

The 2 free checks

Start at the top. Unplug the machine first.

01
Unplug the washer, then check the wire harness connections on the motor control board.
02
Make sure the drive motor's connections are secure.

What causes it

Listed most likely first.

Cause	How often	DIY
A fault in the wiring to the motor and control units, or in the drive belt	Most common	Call a pro
Motor control board failed	Common	Call a pro

If none of that fixed it

If the wiring and connections are good, check the drive belt for wear, then watch the motor for powered rotation to isolate the failed part.

Before you check anything

Disconnect the power first. Unplug the machine at the socket, or switch off its circuit at the consumer unit if it is hard-wired. Do this before opening any panel, reaching into a pump filter, or moving the appliance.
Turn off the water before disconnecting a hose, and have a towel and a shallow tray ready — a drain hose holds water even when the drum looks empty.
Gas, mains wiring and sealed refrigeration are for a qualified professional — in many countries that is a legal requirement, not advice. If you smell gas, do not touch any switch: leave, and call your gas emergency number from outside.
Stop if you smell burning, see scorched wiring, or find water near an electrical connection. None of those is a code to look up.

The checks on this page are the manufacturer’s own, rewritten and sourced, and they are reference information rather than a repair instruction for your particular machine. Model, age and installation all change what is safe to do. You are the one standing in front of it — if a step looks wrong for the machine you have, trust that and call a technician.