ZBD3900C00SS General Electric Dishwasher - Instructions

Only getting "humming" sound from dishwasher. Although water had filled the dishwasher tub, pump/motor would not operate. After some research, figured the motor had siezed and I had to replace the pump/motor assembly as mentioned on this site. The kit came in a couple days and I reserved a Sunday afternoon for the repair which I had never done before. Hardest part of repair was unhooking and removing dishwasher from under counter and then getting it back in proper place. I would suggest providing some instruction within the repair instructions showing how the dishwasher is installed or how to remove it as I had never installed one so I was not quite sure what screws etc I needed to remove on the dishwasher itself to start to remove it? I was able to find the original installation instruction for the dishwasher and found that all you had to do was remove two screws from the inside top of the dishwasher which were securing it to the bottom side of the kitchen counter and then the whole thing just slides out. Once removed, turned dishwasher over to access bottom where pump/motor is located. After determining which diagram to use with the instructions, proceeded to replace the motor/pump assembly. It came out easily after wrestling with some corroded bolts/nuts and the existing pump inlet and outlet hose clamps. Mine were old and worthless and no new ones (3-4") are supplied with the kit. Had to run to hardware store to get new hose clamps for the inlet/outlet of the pump before intalling new one. Suggest new hose clamps be provided with the kit. Only thing that was not too clear in instructions was when reconnecting power wiring harness to motor. By looking closely at the instruction diagram I was able to locate what looked to be the right power extension harness from the bag of parts and attach it to the existing power wire harness and the new motor. Suggest also that you somehow better distinguish or identify the proper way the power wire harness should be fastned to the motor? The existing power wires were both the same color and both the female and male connections for the power at the new motor were identical leaving you to guess which wire goes to which connection. After re-installing dishwasher, put about a gallon of water in bottom of unit prior to starting and then put it through a few cycles. It has been working just like new. Suggest having a helper when removing and re-installing dishwasher from under kitchen counter to assist with the power cord, water line, drain line, and help to turn the dishwasher upside down and right side up again.

Removed the lower rack and installed new wheels with clips

The newly purchased wheels have a little different design and could be installed in a matter of few seconds.

The symptom was that none of the dishwashers light came on – it was totally dead
With this repair the important thing was making sure I was replacing the right part. I also tested parts in order to avoid disassembling more than I needed. I checked the following:
1. Circuit breaker
2. Electricity was getting to the connection box underneath the dishwasher. (Require removing panels between DW door and floor).
3. Next I disassembled the DW inner door and checked the switch. Power was getting to the switch. When depressed, power was go on both sides of switch.
4. I pulled out the electronic control assembly (ASM) and checked that power was getting to the ASM; it was. (Note: be careful about what you touch, there is 110 volts out in the open).
5. I pulled the ASM from the enclosing plastic box that surrounds it. I looked at the circuit board to trace where power went from the connector. Not surprisingly, it went through a fuse then to a transformer.
6. I checked the fuse two ways: I checked it hot: power was getting through the fuse. I also unplugged the power and checked the resistance. The fuse was good.
7. Set the Volt-Ohm meter back to 300 Volts AC range – do not risk putting 110 volts into the ohms setting.
8. 110 volts was getting to the primary side of the transformer. There was no voltage on the other side.
9. I unplugged the power and checked the resistance of the primary side of the transformer. It was “open” – meaning a wire is broken inside the transformer.
10. This confirms the problem in on the ASM board. If I knew the voltage on the secondary of the transformer and radio-shack had such a part I guess I could try unsoldering it and replacing it. But I didn’t know that and there were signs of water corrosion on the board so I replaced it.
11. PartsSelect made the look up easy. Delivery was fast. The DW now works again.

First I opened the package and screwed the new dispenser cap into place.

Inserted wheels on socket and then into the dishwasher rack.

We knew roughly how we needed to put the cap on the rail, but our technique of simply forcing it in the end of the rail wasn't working. The trick is to bend the moveable part of the plastic cap inward while you're sliding it in, and it clicks right into place.

The location of the cap we were replacing was the upper back left, which made it a little tricky to reach back there and insert it, especially for a bigger guy like myself. We took the bottom rack out and my smaller wife was more easily able to lean in the dishwasher and reach back there to insert it.

installed part on inside end of rail. no tools needed. original part wouldn't stay on rail. finished in 2 minutes
wife happy

do not know where to position the detergent door arm when reinstalling the inner door. cannot get the detergent door to function. tried several positions. HELP. I do not have the mechanical timer switch, its electronic finger touch.

Very simple. By hand, I unscrewed the old spray arm and screwed in the new one. One brief hangup. The old spray arm was very hard to unscrew. Rather than seeming to force it, I called the PartsSelect 800 number and got advice. The tech reassured me that all I had to to was unscrew it and put in new one. So I applied more force and old one came out. A breeze.

stripped old gasket from around the door (easy part)

instructions said to remove two screws from the bottom of the door to allow you to fit the gasket around the bottom

this was not too easy as you cannot get see the inside of bottom end of the door
I ended up removing the other door screws and this allowed me to fit the gasket quite easily

one tip tape the door lock immediately after removing screws as the lock assembly is not attached to the door

final step was to make sure the gasket was seated all around as my first wash had a slight lead

by pushing on the door after the door was locked cured the problem

REPLACE CONTROL BOARD - Turn off circuit breaker. Take out lower rack. Remove inside door panel (seven Phillips screws). Hold outside door panel (control board location) in place with bungee cord. Remove push lever (two screws) to facilitate removal of control board. Disconnect control board connectors (five, I think). Remove old control board (two screws and plastic clips). Install new control board (clips, connectors, and two screws). Re-install push lever (two screws). Re-install inside door panel (the main contol lever alignment is a little tricky), seven screws. Remove bungee cord. Put lower rack back in. Turn on circuit breaker. Test dishwasher. Worked perfectly, just like new. Normal amount of water in bottom. "Dry" cycle normal. "Clean" light comes on and stays on until door is opened i.e. normal operation. "Delay" feature also works normally. Dishwasher may last a few more years. Cost of control board: $120 inc. shipping.

Use screw driver for leveage, righty tighty, lefty loosie, easy as that, and thanks to Parts Select, ordered my part on Thursday by dinner time Friday had part, install no washing dishies by hand, Thanks guys

Brian Souza
Vacaville, CA

I just plugged in the model number and a screen came up that showed all the part numbers that made up the model. picked out the parts that we needed and ordered it and within 2 day we had the new basket that we needed for our dish washer.
the service and ease was better that going to the appliance store and picking up the basket.
I was very happy the the service.
Donald Brown

Took inner door panel off and cleaned and replaced gasket.