Question about Kenmore 3.8 cu. ft. HE3 Front Load Washer

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Kemore he3 showing f28

My kenmore he 3 will fill with a little bit of water, than seems to do nothing, and the display will show f 28. Does anyone know what this problem is?

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F28 is a serial bus error from the CCU (Central Control Unit) to the MCU (Motor Control Unit).

All you need is some Electronics contact cleaner spray and a 1/4 inch socket to remove the top of the machine and the back of the machine.
The CCU is the computer looking box at the top front right hand corner.
Find connector M13, (has red marking on it and only 3 wires) disconnect it by pushing the retainer tab back and pulling gently on the connector.
Spray the contacts of the connector and computer with connector cleaner.
Then re-assemble connector.
The MCU is in the back lower left corner.
Find the connector with 3 wires and red mark, and remove this connector in the same way you did the other, spray it and re-install.
Put the back and top back on.

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Posted on Sep 14, 2010

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Posted on Jan 02, 2017

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F28 error code on kenmore elite he3 washer


F28 error code is a communication problem between the CCU and the MCU. Try unplugging the machine for several minutes.

Nov 28, 2016 | Kenmore Washing Machines

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Kemore HE3 Quitepak2 Elite Model: 110.45862403: Error F06 I have followed your...


This advice is for Kenmore Elite HE and Whirlpool Duet FRONT LOADER washing machines displaying the "F06" error code. The error is an indication a motor speed problem. You will need to check the following:

- Check the wiring harness. Verify all connections between the Drive Motor, Motor Control Unit (MCU), and Central Control Unit (CCU).

NOTE: The MCU is a circuit board located in the vicinity of the Drive Motor on the bottom rear of the washer. To access the MCU, you will need to remove the back panel of the washer.

NOTE: The CCU is the main computer for the washer and is located behind the wash tub. You will need to remove the top panel to access the CCU. This is accomplished by removing the three screws in the back of the washer that hold the top in place. Once the screws are removed, the top panel will slide back, then lift off.

- Check the Drive Motor. Perform a continuity check of the Drive Motor windings. Remove the connector plug and check across pins 1 to 2, 2 to 3, and 1 to 3. All readings should be approximately 6 ohms. HINT: You can also take this reading by removing connector 2 from the MCU and measuring across pins 1, 2 and 3. If the readings are good, this will also prove the wiring and connector good.

- Check the MCU. The connectors are numbered 1 to 3 (L to R). That is, with the MCU installed, connector 1 is on the bottom, followed by 2 in the middle, and 3 on top.

Connector 1 - is the serial communications link between the MCU and CCU and has three wires. At the opposite end, this will be the 2nd connector from the rear on the left-hand side of the CCU.
Connector 2 - is the link between the MCU and the Drive Motor. Pins 1, 2, and 3 on this connector are the Drive Motor windings. Pins 4 and 5 are for the tachometer.
Connector 3 – is the primary power connector. Pins 1 to 2 should read 120VAC with the door in the locked position. Pin 3 is ground. At the opposite end, this is the 4th connector from the right on the front of the CCU.

NOTE: All the connector pins are numbered R to L.

If your continuity readings are normal for the Drive Motor and you have verified all connectors, replace the MCU.

If any of the Drive Motor windings indicate readings higher that 6 ohms, replace the Drive Motor.

I hope this information is helpful.

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1 Answer

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The F1 error code means that the control board has detected a error within the control itself
the F28 means that the moisture sensor is defective,now the moisture sensor is justa metal bar that fits into the front of the drum and hardly ever bad so sad to say both error codes point to a bad control board that would need to be replaced.


GENE

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The error code F28 means one or both of these parts are bad.
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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
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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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My washer is showing a error code of f-28. What does this mean


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