I have exactly the same happened with one of these and could do with fault code list if any one has one.
Had blown fuse and then flashed lights 3 and 5.
I have repaired the link in the second post, it went AWOL in the move to the new forum software. 😉
3+5 is a classic no heat fault, its either the heater or the PCB 99{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the time, megger the heater, if it is OK then its the PCB.
Hi guys. I see a lot of posts regarding the 100 bit pcb. Haven’t repaired any yet. Do you buy these configured or do you have to have the card reader etc?