How to Troubleshoot & Replace Whirlpool AP6013067 / WP8540751 Water Inlet Valve

Replaced the water inlet valve and the washer works flawlessly now. 

Replaced the water valve fixed the problem. I cleaned the drawer and other parts but did not solve the problem. They needed cleaning but the main problem was the water valve. 

I researched my problem online and in a matter of minutes I was able to diagnose several possible causes. Rather than replace a perfectly good machine I decided to repair it following the information I found. I replaced the water lines hot and cold. The water inlet valve, and the inlet flowmeter. No more error code and the washer is now running fine. Best money I ever spent. No reason to toss household appliances, when you can fix them in minutes. 

Searched on Google for the error code as the front load washer would always stop mid cycle with an error code. I bought the Whirlpool Duets used. The forums said plain and simple that the water inlet valve only lasts so long and the rubber washers begin to swell and water flow becomes restricted. In South Florida the water is on the hard side and even the rubber washers in the toilet ballcock need replacing once a year. I found the best price for the valve was at Appliance Parts Pro. Their web site said usually a day and a half or two days to arrive. I didn't believe that statement as their popular competitor always takes 7-10 days to arrive. But, a day and a half later the part arrived. I immediately installed it in 15 minutes and when I started a new wash cycle, you could hear the water filling was very loud. The washer works great and is very fast now. If you have a problem with hard water and error codes indicating not enough water, this is your problem. Thank you Appliance Parts Pro. 

The washer was shutting off immediately after the wash cycle, providing no error code. In addition, during a wash cycle, there never seemed to be enough water in the wash tub. After a few google searches, it appeared the first things to check were the water level pressure switch and the water inlet valve. I performed the pressure switch continuity test per the service guide. It passed. I also check the tube connecting to the pressure switch and found no leaks or blockages. I then checked the water supply lines. They seemed fine, providing good water pressure and flow, however; water flowing into the washer was very slow. I performed the inlet valve resistance test and it failed. I ordered the new part from AppliancePartsPro.com. It arrived in 2 business days. The replacement was easier than the troubleshooting. 20 minute job in total: Unplugged the power; turned off the water & disconnected the water supply lines; removed 3 screws that secured the top cover & removed the top cover. The inlet valve was easily accessible and easily removed by removing a single screw, 2 electrical wire, and a single supply hose. Replacing the inlet valve was just reversing all the steps. That fixed my issue and the washer runs great. (There are several youtube videos that show how to do this job.) 

The pressure switch was not tripping simply because the tub wasn't filling quickly enough. After removing the top (using a nut driver), I attached a different hose from the original inlet valve that drained into a bucket in order to verify that there was a problem with the valve. There was only a small trickle, so I ordered the replacement valve. When this replacement valve arrived, I removed the original valve (requires a Torx driver, a T-20, I believe), put the new one in, reattached all of the hoses, tested, and then replaced the top. Now that it's complete I can also say that the problem can also be diagnosed by listening to the machine when a cycle starts. If you hear kind of a faint trickle when the valve turns opens, the valve probably needs to be replaced. Normally, it's more of a very audible "whoosh" with normal water pressure. 

With the help of the videos. I replaced the pressure sensor and the water inlet sensor. Couldn’t have been any easier. Noticed a huge difference with the next load of laundry. 

Replaced water inlet valve with new one. 

Thanks to this site was able to trouble shoot to the water pressure sensor switch or water inlet valve and opted to start with the water inlet valve that fixed the problem. The videos were a tremendous help that cut the repair time in half even if only to avoid trips back to the tool box. The added feature to double check part compatibility before purchase / shipping is priceless! Shipping was as promised! Machine fixed! This site is second to none of other repair sites I have encountered. THANK YOU! 

Replaced valve assembly.