New life for the old washer
Had the 04 error on my Bosch Nexxt Washer, model WFMC3200UC/01 which indicated a problem with the drain or pump. I had many times cleaned out objects from the pump housing, such as coins, nails, and other small objects that jammed the pump impeller. This time I opened the pump and found nothing blocking the impeller, which seemed odd. Also the machine would sometimes go complete cycle without a problem. I found a service manual online and was able to do some diagnostics, and the pump seemed fine. Put it back together and one wash later the fault was back. I did notice the impeller to be a little loose from what I would expect, but not seeing the unit when new I was unsure if the impeller was intended to wobble or not. During one of my tests the pump motor failed to rotate, leading me to deduce the pump was the issue, for sure. I checked the various vendors and found this Supco pump seemed to be the latest version that fit my particular washer, and it was the best price. The new model pump has an extra hose to drain the pump before opening the cover, but I had already learned to have a wet vacuum ready and open the cover slowly while waiting for the water to drain. There is quite a bit of water, and you can use towels. I have not tried the auxiliary hose so I do not know how effective it is in reducing water spillage. Changing out the pump is not too difficult, and the manual certainly helps. The front of the washer needs to come off, and the tub gasket retainer is the most frustrating part to reinstall.
Anyway, the washer is working fine now. I took the old pump apart and discovered that the motor shaft was very worn, allowing the armature to rub on the housing. Depending on how the motor stopped governed if it was able to pump next time it was called for, hence the intermittent problem I was experiencing.
This pump was made in China, and the old one was made in Italy, but there seems to be no difference in the quality, and I do not know where the replacement Bosch pumps are manufactured. I am happy that I can keep my washer running...
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