Question about Whirlpool WFW8300SW
Model number WFW8300SW
For the F28 error code:
First, check the wiring harness connections to the MCU, the Motor, and the CCU. Make sure all the connections are tight and there are no ground wires off. Then check the connections of the CCU board within the housing.
If the wiring connections are fine then It would be a good idea to order both, as both components have been problematic for the error code F28.
Here is the CCU to order.
Here is the MCU to order.
Posted on Nov 03, 2012
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Posted on Jan 02, 2017
An easy Fix. Take off the kick panel, 3 screws 1/4 inch. Make sure you have a shop vac ready or a lot of towels as there will be some water. Always disconnect power to washer and dryer, and turn off water to washer. Your filter most likely is clogged with change, screws, lint, and other household stuff that we leave in our pockets! Unscrew the cap on the filter, easy to find, since you have the kick panel off! Take everything out of the filter. Take your shop vac and **** out remaining stuff in hose. Also, **** up any water that has leaked in and around the washer. Screw the cap back on hand tight, put the kick panel back on, turn your water back on, plug it in and there you go! Maybe takes an hour and saves you a repair bill. If you are not comfortable with this procedure then call a maintenance person that is qualified.
Posted on Jan 06, 2009
i had the same problem. take the bottom cover off of the front of the washer. on the right you will see a round white screw off cover, it is very tight, it unscrews counter clock-wise. pull this out and see if there is any debris in it. if you look into the hole on the right side there is a hole about 1 inch round, this is the pump opening. you may have to take the gray drain hose off of the back of the pump housing and feel if anything is stuck in there, in my case there was a penny stuck side ways blocking the flow of water. after i took it out the washer has been running great again. this is obviously a design flaw, that something that large could manage to get that far, lucky for me it didn't damage the pump impeller. hope this helps. this should take care of the SD and the F21 error codes.
Posted on Aug 23, 2009
Can be the machine control or the motor control here is a link to the Repair manual....
Posted on Sep 13, 2009
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 21, 2010
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