When you try to use the machine, what exactly happens?
When I press the on button, the two lights (2 and 4) start flashing, nothing else happens. I can't cycle through the light selection and start the machine.
Is this clear?
OK, thanks for that.
2 and 4 flashing indicate a fault in the heater circuit.
Unplug the appliance.
You would need to gain access to the heater connections, take the wires off and test with a multimeter to see if it's open circuit.
If it is, you need to replace the heater.
Let me know what you find.
Sorry, if you're unable to take the machine apart or test components, I'm afraid I'd have to say yes.
You will need someone to check the appliance for you.
Good luck with the repair.