Diswasher won't run.

drain pipe is clogged and cycle programmer is faulty.

rcd units trip from the milliamps that are in a short
it trips the rcd to prevent electrocution and acts in nano seconds besides being a circuit breaker for excessive current
the trip can be from moisture allowing a current leakage to ground or some other simple operation
I suggest that you get in a qualified electrician / bosch service technician to find the reason for the problem rcd

just fill it with water no soap and drop in vinegar right in the water and let it run its cycle

but clutch or loose worn belt, also check bad motor coupler

Dishwasher will not start Is the door open or unlatched?
Make sure the door is completely closed and latched. On models with a dual-digit display, the control displays "- -" during a cycle if it believes the door is not latched. Check for obstructions (spoons, etc), interfering with the door operation. A lower dish rack that is installed backward will also cause incomplete door closure.

Check your household electrical box to see if a fuse has blown or if the circuit breaker has tripped. If the unit has a plug-in power cord, make sure it is plugged in.

Does your dishwasher have a rotary timer knob? (Some Models)
The cycle selection must match the position of the timer knob. Turn the timer knob to the beginning of the preferred cycle. The timer knob should click when you reach the start of the cycle.

Is the control lock option activated?
Press and hold the Heated Dry option (button with lock icon) for three to five seconds and the light should turn off. Instructions are also placed on the label on top of the inner door to unlock the controls.

Is the delay start option activated?
To cancel the delay and cycle, press Cancel/Drain.

Has the motor stopped for less than 10 minutes?
The motor may have stopped due to an overload. If this is the case, the motor will automatically reset itself within 5-10 minutes.

Is the Start/Resume indicator flashing?
Opening the door or interrupting the power can stop the cycle. Close the door and press Start/Resume. If the Start/Resume indicator flashes three times when you press Start/Resume, the dishwasher is waiting for you to open the door after the last cycle. Open and close the door, and then press Start/Resume.
On models where the controls are on top of the door be sure to close the door within 3 seconds of pressing the Start/Resume to start or resume the dishwasher cycle.

Is the water shutoff valve (if installed) turned on?
Make sure that the water shutoff valve is turned on.

Sounds like you have a bad Control Board

http://www.partstore.com/Part/Maytag/Maytag/MDB6600AWW/Maytag/Maytag/99003160/New.aspx

But with the price it cost, you might be better off buying a new dishwasher, preferably a different brand, cause that washer has some bad reviews

Push these buttons in this order High temp wash > Heated dry>High temp wash >Heated dry all the lights will come on and this will reset the board and run it through a short test cycle but more than likely it will come up again,It's a failure in the heating cycle either the heater itself or the turbidity sensor which sits mounted up into the tub right behind the drain pump...hope this helps

I read all the blogs on this dishwasher and decided to buy a new one and use this one as landfill...
Nothing but junk.

The dishwasher lights are all blinking, it starts randomly, like one in every 50 times you press the buttons. I have unplugged it to reset several times. Nothing is working. I'm looking for a solution to blinking lights and it not starting. is there any other way to reset the controls????

Try pressing heated wash, heated dry, then heated wash, heated dry. It should reset it. Also try pressing and holding the cancel button for 5 seconds to see if that works if the other doesnt.