Do you know what does f28 means on Whirlpool washer? The Whirlpool Duet washer’s digital display will occasionally show an error code to notify you of a dilemma with your washer.
You have to press the stop button two times and one time the power button to delete this error. If the error code persists, disconnect the washing machine or turn off the main power for a few seconds. My friends, it’s all right about the error f28. But if you want to learn more about the causes and the solution to eliminate this error, read this article at the end!
How to Fix the Whirlpool Washer F28 Error
As we said before, the F28 error isn’t a big deal in almost all cases.
However, it can be inconvenient because many different things can cause a serial communication error, and it’s not always going to be instantly apparent.
We’ll go over two possible solutions: rebooting the control board and fixing the wire harness.
OK, we know we said that the F28 error is rarely a problem with the boards. Emphasis on “almost.”
In some sporadic cases, a faulty CCU or MCU can cause a communication error, though most of the time, when one of these boards is broken, you should be getting other more severe errors instead.
Anyway, to verify CCU operation, you need to run a quick diagnostic test.
Pick three buttons apart from power, start, and cancel, and press these buttons in sequence three times in a row. For example, ABCABCABC. Note that this has to happen within 8 seconds.
If the test doesn’t return any errors, then your boards should be fine. However, if it does show an error, then you’ll have to replace the faulty board. There’s no way around this.
We’ll start with the simpler solution. You don’t need to be an expert technician to do this, but you’ll need a Phillips head screwdriver, then follow these five simple steps.
If you’re still getting the F28 error after this, then move on to the next solution.
This solution is a bit more advanced than the previous one, so if you’re still on warranty, call a technician to come to fix it for you. If not, then follow along to check the wiring connections.
You’ll need to access the insides of the washer, so unplug the washer from the wall outlet and unscrew the detergent tray on top again.
On the CCU’s left, you’ll see several bundles of wires, the furthest of which should be blue. This is our target, as it connects to the MCU.
Next, you need to disconnect the MCU wire to tighten the harness connection points. For this step, you’ll need something thin to poke with.
Do you see the gaps in the harness with three tines on each end? These are bendable, so use your poker to bend them down a bit.
Before you plug the harness back, check the metal pads that the harness connects to. An oxidized pad can disrupt communications and cause the error. If you’d like to channel your inner technician, you can take the CCU apart and use solder to remove the oxidized bits.
Last, put everything back together, plug the MCU wire back into the CCU, then shut the detergent tray. Plug the machine back in, and everything should be fine by now.
The Dreaded Whirlpool Duet F28 Error Code
In layman’s terms, an F28 error code means there’s a serial communication error between some parts in your Whirlpool Duet Sport washer.
More specifically, the F28 error code means your washer’s central control unit (CCU) and motor control unit (MCU, also called a motor control board) aren’t communicating with each other, or there’s a loose connection between the two boards.
For those who don’t know, the CCU board is the brain of your washer, as it controls everything it does, from filling and draining to agitating and spinning.
On the other hand, the MCU powers the washer’s motor, as the name implies. Without the MCU, your washer would receive instructions but not have the ability to perform them. So in a way, it’s the muscle of your washer.
Because we’re not yet in the age of Wi-Fi washing machines, the boards in your Whirlpool washer, such as the CCU, MCU, and front panel UI, send data through a set of wires called the serial communications cables.
During a data exchange, the parts have to verify the data before doing anything with it. During verification, any error discovered is known as a serial communications error, and your Whirlpool Duet Washer will throw you an error code to let you know.
If the last part sounds like a big deal, don’t worry because it’s not.
Given the environment in which these boards operate, some moisture can interfere with the electricity, which can cause an electric mishap.
Again, this is very rarely a serious problem since even the slightest mishap can cause a confusing signal-to-noise ratio that disturbs communication between the different boards. In other words, it’ll throw you this error.
Probably not. It’s a communication error, not a bad circuit board nor a faulty control panel that’s to blame here.
And yeah, maybe you know someone who faced the same error and told you they fixed it by replacing the main central control board or the motor control board.
But in almost all cases of error code F28, the boards are fine. Let me remind you of two things: first, the Whirlpool washer is an electronic washing machine with different boards that need to communicate with each other so that the washer runs smoothly.
Second, the error code description says it all: it’s a communications error, or in other words, a loose connection.
However, in some rare cases, the error will be caused by failed components, and we’ll cover that in a bit.
Unplug all the connections from the motor control board to the central control unit and plug them back in. It may just be a loose connection that is losing contact when the washer moves around a bit. If that does not solve the problem, then replace the motor control unit if the problem persists after that replace the central control unit as there is no way to tell which board is causing the problem. Under warranty, we just replaced both boards. In your case I would recommend if, after checking the wiring connections, you still have issues replace both boards with used boards. You can get the used ones pretty cheap compared to new ones, and considering the age of your washer. You dont want to spend the money on two new boards. You can get the boards used at the link below if you are not sure what part numbers you need just ask them in chat.
My washer will work fine up until the spin cycle then it stops when I run diagnostics it shows the f28 error. Any ideas on what may be causing this to happen?
Whirlpool Duet model WFW9451XW00: Replace motor control unit to try and fix F28 code, but that did not work. What should be the next step. Thanks very much.
Hello William, The problem you are having is likely caused by a loose connection on either the central control unit or the user interface. Check the wiring and make sure all the plugs are seated properly and check for wiring that may be bad. Latest Questions
Hello, there is no need to check anything. The F28 error you are getting on your Whirlpool dryer model WGD9400SW0 means the moisture sensor has failed you need to replace the moisture sensor strips. There are two strips its best to replace both at once. So order two of the strips linked below:
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This suggests that there is a problem with serial communication between MCU and the CCU. Solutions: Keep the washer unplugged for 1 minute. Plug in the washer and restart with any cycle.