Haier dishwasher DWL7075MBSS first stopped responding with no power. Flipped breaker and now door does not latch and all buttons beep three times, drain runs and then shuts off!

If your Haier DW12 dishwasher is not switching on, here are some steps you can take to troubleshoot the issue:

1. Check the power source: Make sure that the dishwasher is properly plugged into a functioning power outlet. You can test the outlet by plugging in another device to see if it works.
2. Check the circuit breaker: Check the circuit breaker for the room where the dishwasher is located. If the circuit breaker has tripped, reset it and try turning on the dishwasher again.
3. Check the door latch: Ensure that the dishwasher door is fully closed and the latch is properly engaged. The dishwasher will not turn on if the door is not securely closed.
4. Check the control panel: Inspect the control panel for any damage or signs of wear. If the buttons or display are not working, it may be a problem with the control panel.
5. Check the fuse: Check the fuse in the dishwasher's power cord. If the fuse is blown, replace it and try turning on the dishwasher again.
6. Professional repair: If none of the above steps work, it may be a more serious problem that requires professional repair. It is recommended to contact Haier customer support or a professional repair technician for assistance.

It is important to take caution when attempting to troubleshoot or repair a dishwasher, as these appliances can be dangerous if not handled properly. If you are not confident in your ability to perform repairs, it is best to seek the assistance of a professional.

It sounds like you're experiencing multiple issues with your Smeg DWAU6D15XT dishwasher. The combination of non-responsive control buttons, unusual display behavior, and a stuck door mechanism could indicate a few different issues. Here are some troubleshooting steps you can try:
1. **Power Reset:** You've already attempted this step, but it's worth mentioning again. Turning off the dishwasher at the wall for an extended period (such as overnight) can sometimes help reset electronic components.
2. **Check for Jammed Door Mechanism:** If the door won't close properly, it's possible that something is obstructing the door mechanism. Check for any objects or debris around the door or hinges that might be causing the issue. Gently clear any obstructions and try closing the door again.
3. **Check for Water Leaks:** Sometimes, water leaks can trigger safety mechanisms that prevent the dishwasher from operating. Look for signs of water around the base of the dishwasher and address any leaks you find.
4. **Check Child Lock Feature:** Some dishwashers have a child lock feature that can prevent the control buttons from responding. Check the user manual to see if your model has this feature and how to toggle it on or off.
5. **Inspect Door Latch:** The door latch is a crucial component for proper operation. Ensure that the latch is not damaged or misaligned. If it's not engaging properly, it can prevent the door from closing securely.
6. **Circuit Breaker:** Check the circuit breaker that supplies power to the dishwasher. If it has tripped, reset it and see if the dishwasher responds.
7. **Error Codes:** Some dishwashers display error codes when they encounter issues. Refer to the user manual for your dishwasher to interpret any error codes being displayed.
8. **Service Call:** If none of the above steps resolve the issues, it's advisable to contact Smeg's customer support or a professional appliance technician. They can diagnose and address more complex issues that require specialized knowledge and tools.
Before attempting any repairs, make sure to unplug the dishwasher or turn off its power supply to ensure your safety. If you're unsure about any aspect of troubleshooting or repair, it's best to seek professional assistance.

Is your dishwasher hard wired into the house power system ... or plugged into a wall outlet under the kitchen sink?
You mentioned you turned off the power ... how? via the circuit breaker or disconnecting it from the wall? If your unit is plugged into an outlet (and you depowered by cutting the breaker) ... I would check the cord and outlet .. it might be as simple as that.
If that is not the problem ... trying a reset.
Below is a generic one for Whirpools which may work on your model
To reset it, you will have to have the door open. It can not be latched. Press "Heated Dry," "Normal," "Heated Dry," "Normal" within three seconds of the first pressed button. Now close the door, this should reset your dishwasher.
Good luck on your troubleshooting!

Most likely moisture has affected the switches in the panel or the controller is faulty.

Refer assembly shown in the link below. Open the panel and locate the ribbon cable. Carefully take it out and with a hair dryer lightly dry up the parts. Put everything back and turn power back on. If no difference still then you may have to replace the control board.

MAYTAG Undercounter Dishwasher Control panel and latch Parts Model...

I think the flood switch has triggered which forces the pump to run continuously but does not take any other input. I am assuming it is the pump sound that you are hearing as soon as you connect power to dishwasher. The float switch is at base of dishwasher. You can press the disc visible near the filter sump. It should move up and down when you press it. If it is not moving then the spring is stuck and needs replacement. However if the disc is ok but you are still getting the problem, then you will have to check for flood switch failure. The flood switch is under the dishwasher and to access it you will have to pull the dishwasher out and lay on side. Make sure the mains power is disconnected and water inlet tap is shut.
see items 17 and 21 in this diagram.

http://www.searspartsdirect.com/partsdirect/part-model/Haier-Parts/Dishwasher-Parts/Model-DWL7075MBSS/3126/0130000/50037858/00001?blt=06&prst=&shdMod=

might be a bit slow to view.

blocked pump ,dont do it yourself

Ok, Turn breaker off at breaker panel. Just off then on. The rinse only light should be on.....not flashing. Now press the start button first and hold; then press the cancel button. That should cancel all lights. Then press wash button then start. If the light is still flashing after you turn off breaker....you might have a bigger problem. May need new control panel.

More than likely the control panel has failed, this is about a $300 repair on most.

I would check to ensure you have power to the dishwasher and that the door is closing/secure properly.

(i.e, Plugged-in properly under sink/back or washer, check for tripped circuit-breaker, and door latch is grabbing properly)