Bosh classic washing machine fault no F 21

Here is a link to the Bosch Website. You will need some model info and follow the link to a service/user manual to help you solve you "No Start" condition.
Instruction Manuals

please go onto the Bosh website for a user manual there usually free to download eric

replace the inlet water control diaphragm or solenoid

You can do so online here: http://www.bosch-home.com/us/support/product-registration.html

is it definatly errror code 20 as Bosh list error code 21 but not 20?

F21 error on this model of Bosch washing machine pertains to a motor or a control board fault. This can be reset and to reset it turn the appliance knob to the off or reset position (12 o'clock), turn the knob to the 6 o'clock and then press and hold the spin button, then while holding that button turn the knob to 7 o'clock position, continue holding spin button for 15 seconds and then turn the knob to off. After a minute turn it back on, if the error code is still there then it means that the motor or brushes in the motor should be replaced, though it is always better to replace the motor assembly completely.

Hi Jeff, As you can see there's 3 different Bosh washing machine models, Hope you can find your error code.... CHEERS..

Bosch Washing Machine Fault Codes

F16 - Door lock error
F17 - Inlet valve error detected
F18 - Drain error detected
F23 - Anti flood device has been activated
F34 - Door lock error
F42 - Motor fault
F43 - Motor fault
F44 - Motor fault

Bosch WAE Range Washing Machine Fault Codes

F16 - Door lock problem
F17 - Inlet valve
F18 - Drain pump
F21 - Motor
F23 - Anti flood system activated

Bosch WFP Range Washing Machine Fault Codes

F01 - Water intake timeout
F02 - Heating timeout
F03 - Draining timeout
F04 - Motor fault
F05 - Uncontrolled motor startup
F06 - Short on NTC Detected on hot water intake
F07 - Open circuit NTC Open circuit wiring
F08 - Door open when program started
F09 - Unexpected heating
F10 - Communication error
F11 - Overheating
F12 - Short circuit
F13 - Mains voltage too high
F14 - Mains voltage too low
F15 - Faulty temperature sensor on motor PCB
F16 - Faulty rinse sensor Displayed only in test

Remove hose at washer connection and check screen filter not blocked with grit from pipes. Check screen at tap end also. If both clear, machine may need water valve replaced.

it may be level but if the feet are not adjusted to be tight to the floor this will cause it to walk so try adjusting the feet then lock the locking nut I am sure you will find 2 that are not adjusted tight enough.

I also had this problem - the machine was full of water and it flashed up F18. I had to drain the water out of the machine using the small pipe located next to the drain filter. There was loads of water to drain out. I used my oven roasting tray which was perfect for the job. Then I undid the screwcap filter. There was a lot of really black water that came out, along with about two pounds worth of coins and some hairgrips. Now my machine works perfectly !