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Fault code 04, 05, 21, 42, 43 and 44 all relate to a motor error. So check your motors carbon brushes for excessive wear, check the electrical plug for any damage or corrosion same with the wiring. If your motor is spinning to high-speed straightaway check that tacho connections, and if the problem persists after checking all those areas suspect the PCB or module.
Hey there, welcome to Fixya! The above answers were pretty helpful, did you fix your problem with them? Did you check the manual for further instructions? You can find a PDF copy here: Bosch Classixx 5 Manual.
For Bosch Logixx, F42, F43 and F44 all decode as 'motor fault indicated'. Sorry ;-0)
I changed the motor on our Bosch (not a Logixx) at a cost of GBP250! I do expect it to last another 20 years, though.
If this has assisted you please score accordingly.
Thanks and good luck!
John C
An error code of "F42" means your oven has a defective or jammed lower latch, latch motor or latch switch, which is preventing the lower oven's latch from locking properly. If all of the electrical connections are in place on your oven's power board, you may have a faulty power board.
it means the float at the base of the machine has been triggered. Open the back panel on the machine (turn off power and water tap first) then remove all screws and take metallic back off. Dry inside base with a towel and push down the float which is located in the corner. This will reset it. Keep an eye on it as it may mean you have a leak.
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