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Troubleshooting and Repairing a Front Loading Washing Machine that Overfills

washer overfill

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3 replies to this topic

#1 Samurai Appliance Repair Man

Samurai Appliance Repair Man

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Posted 10 August 2012 - 08:32 AM

Join Samurai Appliance Repair Man as he goes in batting cleanup behind a local parts changing monkey (PCM) who tried to fix a problem with a front loading washer that overfilled by blindly replacing parts, hoping to get lucky. Of course, he failed miserably but that didn't stop him from charging the customer anyway. The customer called me out of frustration and desperation and, as usual, the Samurai delivers another appliance ass-whuppin'!



The other thing this video illustrates is the importance of understanding how the components inside an appliance are supposed to work together. How else can you troubleshoot? In this case, with the washer overfilling, starting troubleshooting at the water inlet valve is not a bad idea BUT what are you looking for? The PCM simply guessed and hoped to get lucky. But there's no need to guess if you understand how the valve is supposed to work and can make a simple voltage measurement.

In this case, you would use your meter to see if the valve is still getting voltage when the drum was overfilling. If so, then the problem is NOT the valve, it lies in in the component that controls the valve. Here, the pressure switch controls the valve and this is the next thing the PCM replaced. But, again, there's no need to guess because the switching function of the pressure switch can be tested using your ohm meter and gently blowing into the pressure tube to see if the pressure switch contacts change.

Actually, in the process of gaining access to the pressure tube to test the pressure switch, you would have discovered the chaffed pressure tube in the course of doing simple troubleshooting like a real technician and not just blindly thrashing about, throwing parts at the machine and ripping people off.

So, putting this all together, here's a simple operational description of how these parts work together inside the washer:

As the water level in the drum rises, the pressure inside the pressure tube increases. This increased pressure is felt by the pressure switch which is calibrated to switch contacts at a specified pressure corresponding to a design fill level. The pressure switch, which was sending voltage to the water inlet valves during fill, then cuts voltage to the water inlet valves and the wash cycle begins.

Is that so hard to understand? How is it that someone who repairs appliances for a living does not understand this?

Here's the new pressure tube I installed to fix this problem ==> http://www.repaircli...1X10129/1168781

Tube-WH41X10129-01324915.jpg


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#2 KurtiusInterupptus

KurtiusInterupptus

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Posted 12 August 2012 - 12:40 PM

Nice thwarting of an especially inept PCM...thought id share my method for repairing rubs and holes in air dome hoses...
take a small section of 1/4" copper tubing, approx 1" Long and use it as a coupler, cutting out the bad section. Works like a champ, and is prolly stronger than the original...
As every cockroach knows , thriving on poisons is the secret of success.

#3 Fix It Once

Fix It Once

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Posted 12 August 2012 - 01:54 PM

My question of course on this issue would be, How would you have first approached this problem, had you not already known that the other 2 components were not the cause of the problem.

#4 Samurai Appliance Repair Man

Samurai Appliance Repair Man

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Posted 12 August 2012 - 02:00 PM

My question of course on this issue would be, How would you have first approached this problem, had you not already known that the other 2 components were not the cause of the problem.


Just scroll back up and read the original post. I explained all of that in excruciating detail.





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