Please go here on pc, this tells you how to reset bosch dish washer. baubilt.com/?p=1318 This tells in full detail. God-Bless you all!
SOURCE: What is error code 2H
My Bosch dishwasher did the same thing. When the wash cycle starts, the dishwasher fills with water and then the heater is supposed to turn on to heat the water. If the water does not heat, then it will display 2H continuously. The heating element may be bad, but a more likely cause is with the control module. Bosch has a problem with the control module printed circuit (pc) board that powers the heater on many models. The solution requires some technical expertise and soldering skills. The details are explained in the document "Bosch dishwasher troubleshooting tips" on page 11. Download here
Bosch recommends re-soldering the connection, which is a temporary fix. The problem is that the copper conductor (called a trace) on the circuit board is not wide enough to handle the current required for the heating element, and as a result the copper trace overheats, causing the solder to melt on the relay connection. The best solution is to remove the control module PC board and solder a short length of copper wire between the pins to prevent the overheating problem, as shown in the attached photo (magnified portion of PC board). I did this on my dishwasher and it has been trouble-free for over 3 years.
A code E27 means a problem with the door lock. Try
unpluging the machine for an hour and see if it resets the lock.
If not remove the cover on the lower right
corner you will see a white plastic pull cord. Pull the cord and pull open the
door. If that doesn't reset the door lock you will need to replace the lock.
HI THAT MEANS door is locked and will not start PLZ VISIT THIS LINK
http://laundry.manualsonline.com/support/bosch/washer/error-code-e27-3495138
I had this problem. I tried to interupt a cycle just after it started and then couldn't start the cycle again, with the E27 code coming up.
e27 refers to a problem with the door locking mechanism which could be due to a number of causes. The problem I had was with the solenoid in the door, not a genuine problem with the door latch mechanism.
Here is how I fixed it:
(1) Set knob to off
(2) Hold down spin selector and Allergy rinse buttons and turn the knob to the LEFT (right does not work)
(3) The display then shows a number of program codes P01 to P14. (Pressing spin selector rotates through the codes).
(4) Press spin selector until you reach P02 on the display, then press the start button, the door will click and the machine will begin a cycle.
(5) Turn the knob to OFF, and then you should be able to use the machine as normal.
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