ZBD3900C00SS General Electric Dishwasher - Instructions

First I replaced the flapper valve of of off the water pump. That worked for a couple of days, then the standing water was back. After more research at your site I ran across other person who had the same problem and they ended up replacing the piston and valve assembly. After pulling the dishwasher out I was able to find where these parts were located. The piston's rubber part was half gone. I replaced it and the gasket and another flapper valve. This model has two flapper valves. One difficulty was that you have to replace the screen inside the dishwasher before you replace the housing that the piston fits in. Your site and other folks contributing their stories helphed me to solve our problem. The dishwasher works like new now. Thanks. Ralph Naddeo.

After disconnecting the supply and drain hoses I unscrewed the security screws and slid the unit out of it's space under the counter. I tipped the machine about 30-45 degrees to one side and examined the underside. I noticed a solenoid that appeared to control a valve leading to the drain tube. I cycled the washer through a wash cycle and noticed that the solenoid never activated. I removed the solenoid and found it filled with debris. I cleaned it out and reinstalled it, but it still did not function. I ordered the part from PartSelect.com because they had the clearest description of the part I needed. Delivery was quick and installation took only a few minutes. After hooking everything back up and sliding the machine back in place, it works like new.

I unscrewed the check valve, tipped the dishwasher on its face, and removed the asembly below it. Then replaced the valve flapper, cleaned out the assembly (broken champagne glass and udder nasties) then put it back the way I found it.
Then I put the new check valve on, and started the dishwasher up.

10 screws and $30 worth of parts saved me 400 bones for buying a new dishwasher.


If you have sanding water in your dishwasher check these two parts.....that check valve is the culpret.

Research the problem on the internet .People suggestion was to replace the sequence switch . If this does not work replace the mother board .The sequence switch was replaced and fixed the problem .

Removed the dishwasher from the cabinet. Turned it on it's top side. Removed the exit hose from the pump with a nut driver and replaced the flapper. Reconnected the hose to the pump.

Once the new motor and pump kit arrived. I removed the dishwasher, turned it upside down and replaced the motor and pump with the new one per the directions. Difficulty came in feeding the electrical wire/plug back through the cabinets. Once done, turned on the dishwasher, filled the tub, then manually moved the dial to drian. The water still would not drain from the tub. I searched further for the problem. Here it is; Found the air gap tube was plugged with food. Once I removed, cleaned and reinstalled the air gap, the tub drained fast and everything works great. So, I hope you folks put this up in your troubleshooting section for others to check before buying a pump and motor kit. If you had, I would have been able to check out the air gap, clean it out first before spending $140.00 for a pump and motor kit I didn't need. Anyway, lessons learned..Jeff

Replaced with a new rinse aid fill cap.

I watched the video and did exactly what he did. I am a novice when it comes to repairs. I learn as I go. This repair went flawlessly. Ordering was quick and easy. The part arrived quickly. The repair took less time than expected. The part was what I needed and nothing else broke or went wrong when repairing the original problem. It was a 100% success.

Removed 4 screws, took off basket covering, put new part in one turn, then replaced covering. Plumber had come out, I watched what he did, he had to order part and come back. I asked how much he didn't know but said cheaper than buying a new dishwasher. When he left I started calling around about the little plastic part that I needed. Part was $15.50. They called and said it would be $110.00. Needless to say I called them out and ordered the part myself and put it in. Took me like 6 minutes and cost $21.69. I was so mad about this situation that I even got my service call money back that I had already paid.

I simply removed the front toe kick panels.
The solonoid is staring you in the face.
I removed the small nuts on back side of the solonoid bracket and removed the retaining clip and springs.
I installed the new solonoid and was very surprised how easy it was.

I DID turn the power OFF at the breaker panel prior to starting the repair.

turn circuit breaker off

Remove 7 screws holding internal panel on door
pull panel up and off,be careful to clear door handle through slot on front. Put a weight of about 8 pounds on the door to hold it open

Remove six screws holding the circuit board, and the small black switch assembly and the pop the control board out. Swap electrical connections from old to new board. Reassemble in reverse
screws should be tightened with fingers on screwdriver only (metal in plastic)

Clean up and collect kiss from spouse

Old baffles lift out and new ones installed - very easy

Disconnect water line and screws (2) holding dishwasher under cabinet, and clamp for wastewater line. Pulled dishwasher out, turned on its side, and removed pump. Disassembled pump per instructions (great instructions) and installed new parts. Reversed to reassemble and except for a loose clamp that leaked (I tightened) it went well. Just under 1 hour.

Unplugged unit, unscrewed screws on top of dishwasher attached to countertop, undid water supply and drain hose that goes into tee with garbage disposal. Using crescent wrench turned front leveling screws up all the way and slid/rocked dishwasher out from under the counter - I had no problem leaving back leveling screws down. Turned dishwasher over on some towels (it WILL leak some water so spread out some towels!) so it was oriented like the directions that came with pump and motor. The directions were good, although color or a picture might have been more helpful. CHECK the new pump/ motor unit CAREFULLY for any loose debris from packing etc. I had a small piece of plastic that was in the top of the motor that goes in the dishwasher bottom that rattled around after I installed everything and put it back. I was able to get to it from the drain assembly in the tub but it made a heck of a racket at first. All in all, I had a great experience. I'm glad I ordered the pump and motor even though I only thought I needed the drain solenoid because when I took the old unit out, the prop on the old impeller was almost gone. Easy to order, good customer service (I called with a question and talked to a wonderful customer service representative!), good directions and easy to do. I'd say a 4 out of 10 in terms of difficulty. Thanks PartSelect!

Took four screws out, unscrewed the piston & nut assembly by hand installed the new one. Cycled the dishwasher & it worked perfectly.