F01 error code indicates a fault in the motor triac.
This can be a fault in the motor and/or the main control board.
However, it can also be a wiring fault.
The service manuals suggests the following:-
Check for continuity of motor (Field coil pins 3-5 and armature pins 1-2);
Check efficiency of module connector block J9, motor terminal block and wiring between motor and edge connector J9;
Unplug the appliance.
Take the top and rear panel off.
Check the wiring to the motor plug and the motor plug itself.
The main board is bottom left when viewed from the rear.
Take the board out.
Take the plugs off and plug them on again to ensure they are clean, dry and tight fitting.
Check the circuit board for any obvious damage.
Check the motor plug and wiring.
If everything checks ok, I'm afraid you'll likely need a new board, possibly a motor too, and the board will need to be programmed to the appliance after fitting.
Check it out, see what you find and get back to me if you need more help
Obviously, if you cannot do the work yourself, you'll need to get someone in to do it for you.
In this case, I'd suggest calling Hotpoint to see what offers they have on their fixed price repairs.
They all include parts and labour.
Hope this helps
I'll have to call an engineer then as I am unable to carry out your suggestion myself.
Sorry to hear that.
I wish there was a simple, inexpensive, answer to the problem.
I think you've already tried it but if not, unplug the appliance for 1/2 an hour.
Plug it back in and see what happens.
(not just switch off, unplug).
Good luck with the repair.