SOURCE: Bosch dishwasher stuck on "1"
YOU MAY NEED A CONTROL BOARD OR A HEATER. THERE IS A CONNECTOR WITH A RED AND GRAY WIRE, THE RED WIRE IS THICKER THAN THE OTHER RED WIRES. IF YOU HAVE 120 VOLTS ON THERED WIRE THE CONTROL IS GOOD. YOU NEED A CLAMP ON AMP METER TO TEST TO SEE IF THERE IS AN AMP DRAW ON THE RED WIRE WHICH WOULD TELL YOU THE HEATER IS WORKING
SOURCE: clean light flashes
You will have to reset the console. To do this, close the door and press these buttons in sequence...
-high temp wash
-heated dry
-high temp wash
-heated dry
...all
the lights will turn on briefly and the machine will start a diagnostic
cycle. You can press cancel or let the diagnostic cyle finish (1-2
minutes).
You should now be able to run the dishwasher as normal.
SOURCE: Kenmore dishwasher Lock On light flashing
holding the button for four seconds will not do it, you have to hold it until the light stops blinking and
will go back to normal, normall takes more than four seconds to unlock the unit, this is something
the sears repair techs know becouse the are trained on all this things but, they will not share this things, becouse thats how they make money
SOURCE: Bosch dishwasher model she44c02uc goes
Hello,
Welcome to FixYa.
Based on your description I'd say the issue is with the control...unfortunately.
The number"1" being displayed ( on models with the display like yours ) is actually an error code indicating a fault in the heating process.
Bosch has had a history of this exact problem I'm about to lay out for you and this is the first thing I'd be looking for if called out to service the unit with the symptoms you've described.
As I've alluded to the issue is likely within the electronic timer/control, specifically the heater relay solder joint. ( a faulty flow switch, ntc or heater can also cause this, but not very probable ).
My first suggestion would be calling in an authorized bosch service tech. if that is an option for you and your budget however, If you feel capable of checking this on your own, there`s a way to visually inspect the control yourself.
It will require you to remove the control from the unit and then remove the control from it`s plastic housing and look for a burnt solder contact on the printed circuit board. 
The culprit will 99% of the times be one of the pins from the heater relay,
**Flip this over and inspect the solder joints, it will be obvious when you see it.**
This ones new, but it's where to look...
...hence the unit sit`s and takes longer
SOURCE: my bosch dishwasher won't start
see this causes and fix it. God bless you
Power Supply
The main power supply is the first thing to check. Also remove the toe
kick and the cover on the power box and check the connections. Also check for 120 volts at the power box.
Hi - Limit Fuse
This will fail if your dishwasher overheats and occassionally with power
surges. This is easy to check, inexpensive and a quick fix. Just check
the terminals for continuity ( remember always remove one wire) if you
have none replace the hi limit fuse
Door Switch
This is the second place to look. Again an inexpensive easy fix. The following video will walk you thru checking the door switch. . The power comes into the main power box and usually runs to the door switch next before entering the main control module.
Main Control Module / Timer
The main control module or mechanical timer controls all the functions
of the dishwasher. To check this you will need to find the 2 leads that
supply the power to the control. They will be marked on the wiring
diagram. They usually come from the hi - limit fuse or the door switch.
When the door is latched you should have 120 volts entering the main
control. If you do not the problem is not the control. If you do have
power entering the control but none of the functions work properly or it
does not respond at all you will need to replace the control module ,
this is easy to replace but not very inexpensive to purchase. Consider
the age and overall condition when purchasing this part.
Motor
The motor may have failed. If the control illuminates on electronic
versions the problem may be the motor. To check the motor refer to the
tech sheet located behind the console cover on most models, this will
sometimes have the ohm reading of the motor. Also check each lead to the
metal housing of the motor to check for shorts in the motor. If you do
not have the ohm reading specicifications, check for continuity if none replace the motor Make sure the motor is receiving power
Float Switch
If the float switch has failed or is stuck the dishwasher control may
not respond. The float switch is easy to check and replace.
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