What to do if Smeg SIM592B displays F42 or F43 error?
- JjuanknightAug 10, 2025
If your Smeg hob displays error code F42 or F43, it indicates that the sensor has detected a discrepancy between the appliance voltage and that of the mains supply. Disconnect the hob from the mains and check the electrical connection to resolve this issue.








