Question about Whirlpool Duet Sport HT WFW8400TE Washer

Error F28, i know the definitions, i need how resolve (fix) this problems. Thanhs

1 Answer

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70 Answers

Hi, F-28 means SERIAL COMMUNICATION ERROR
The communication between the Central Control Unit (CCU) and the Motor Control Unit (MCU) cannot be sent correctly.

Possible Causes/Procedure

Unplug washer or disconnect power,check wire harness connections to the MCU, the motor, and Central Control Unit (CCU). Check connections of the CCU board within the housing.
Make sure all grounding switches are engaged.
Check the drive system for any worn or failed components.
Plug in washer or reconnect power.
Verify CCU operation by running a Diagnostic Test or any cycle.
Check the MCU by looking for operations of the drive motor.
Check the drive motor for powered rotations.
Check that the serial harness at the MCU is not mounted upside down. The wires should be to the left when facing the MCU connectors. there is usually a service diagnostic tech sheet in the bottom front of the cabinet behind the panel under the door.

Posted on Jul 18, 2011

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Hi, the error code F28 means one or both of these parts are bad.

Motor Control Unit (8540135)
Microcomputer Machine Control Unit (8540788)

It would be a good idea to order both, as both components have been problematic for error code F28. If you find either the MCU or the CCU(Microcomputer Machine Control Unit) fixed it.

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The error code F28 means one or both of these parts are bad.
Motor Control Unit (8540135)
Microcomputer Machine Control Unit (8540788)
It would be a good idea to order both, as both components have been problematic for error code F28

If you find either the MCU or the CCU(Microcomputer Machine Control Unit) fixed it.

Here's the online repair manual for your
Whirlpool Duet

Give it time to download.
On page# 4-20 it shows how to access your MCU.
https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/6545d78b3f479480852571650061b1ba/$FILE/8178558.pdf

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F28 code washer stops working. Reset will only

Error code F28 indicates that one of the below part is bad

Motor Control Unit (8540135)
Microcomputer Machine Control Unit (8540788)

If you find either the MCU or the CCU(Microcomputer Machine Control Unit) you can fix it,

Here's the online repair manual for Whirlpool Duet Sport, but its identical to your HE2.

Refer page# 4-20 it describes how to get to MCU.

https://secured.whirlpool.com/Service/SrvTechAdm.nsf/2cd44500d572193285256a45004fd9d6/6545d78b3f479480852571650061b1ba/$FILE/8178558.pdf

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Whirlpoo; wfw9200 F22, F28, A17 A27 error codes

f22 is a door lock error and f28 is a commication error you still have warranty thorugh whirpool. you're going to need pro. help

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I have a Kenmore Elite that has done the same thing, I had to press power and then start (to start a new cycle) then the stop/cancel button and this unlocked my door. Power and then cancel/stop just turned off the power again and did not unlock the door. I hope this works for you.

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F28 is a communication error which usually means there is a connection that has come loose. Removing the top and unpplugging and replugging the connectors in will fix 75% of these codes. If the bottom toe panel is not on it will also give you an F28.

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