I hate to resurrect old posts, but I have a very similar problem and need help.

I have been working on the same WFC7500VW0 front loader. The customer's complaint was it only spins in the morning or on the first load. I ran it though two sets of self diagnostic tests and the washer spins just fine.

But when wet clothes are placed in the basket, and the washer is set on "spin" only it just sits there. Tumbling and draining over and over. I thought the cycle was taking forever, so I started timing it a 13 minutes left. Three minutes later it still said "13" minutes left and was still tumbling and draining. The door lock light comes on, and the door locks.

I'm wondering about the pressure switch. The test procedure in the manual looks like it was written by a 6 year old in another language. It has two blue wires to it and two brown. When blowing into the switch I get continuity on the two blue, but never on the two brown.

The wiring diagram is a joke, as is the picture of where to put your test leads on the pressure switch. Its a crying shame we can't build anything in America anymore.

I'm down to the place where I think its either the pressure switch or the CCU. Any help would be appreciated.

I've noticed several people on the Internet have this problem, but no one seems to know whats causing it.

I believe, based on your description, your problem would be in the pressure switch and or the switch wiring harness,to or from the control unit.

A continous tumble, drain, indicates the control thinks it is overfilled or in a suds detect mode,and not draining proper, all are ascociated to the water level switch or wiring.

Yes, it could be a improper input due to motor drag, bad bearings, but I don't think I would start there.But it is an easy test with an amp meter.

Hope this will help

That's the conclusion I came up with, especially after finding out that one of the brown wires never makes contact with anything in the p switch in either state. Like I said the job aid #8178738 is kind of a joke. The wires are OK all the way back to the CCU so either its the pressure switch, CCU, or perhaps the motor. I ordered a P switch, but the closest one is in Texas and I'm in Nebraska, so its going to be Friday before it shows up.

I'm pretty much in the middle of nowhere and this is the first one of these I've had the pleasure of working on. I think there is an excellent chance it will be the last one I willingly work on. What a pain to service. (its in a 5Th wheel bathroom in a tiny closet) I looked up the CCU and its $277 my cost so its probably the real problem. And people say I'm negative. ; ) 20 years of doing this will make you that way eventually. Thanks!

Could you please supply me with the job aid Number or the wiring diagram number.

I still believe your problem is still, in the wiring harness or air dome hose.

In general :

Disconnect the air dome hose from the pressure switch.

Disconnect the pressure switch harness from the CCU(PR6).

Check the suds circuit (pin 1 to pin 2) on the harness connector. should be a open circuit.

Check pin 4 to pin 6 on the harness, should be a closed circuit(tub empty).

When you fill the tub(air dome attached) :

Pin 1 to pin 2 should remain open.

Pin 4 to pin 6 should be an open circuit.

Pin 4 to pin 5 should close as well as pin 4 to pin3.

Any other readings in the test(s) would mis inform the CCU, and the unit won't spin (CCU thinks water is in the tub).

I can be more exact if you can supply the wiring diagram number or job aid number.

For the benefit of others with this problem I had the same exact situation, pressure switch and all. So I ended up just removing all the wiring plugs from the machine control board and re-installing them. Washer spun out perfectly, so it was a poor wiring connection somewhere in that board.