Smeg E02

What does Smeg E02 mean?

Smeg shows E02 as a firmware version error. The display title reads "WRONG FW VERSION" with the instruction "UPDATE POWER BOARD". The firmware running on the power board does not match what the control system expects, so the power board needs to be updated to the correct software version before the oven will operate normally.

Symptoms

• Display shows E02 with the title "WRONG FW VERSION"
• On-screen message instructs you to update the power board
• Oven does not run cycles normally
• Fault appears after a board replacement or software change

Common causes

• Power board firmware version does not match the control system
• Power board software not updated after a service or replacement
• Mismatched or outdated firmware on the power board

Diagnostic steps

1. 01

   Read the on-screen message

   Note the title "WRONG FW VERSION" and the instruction to update the power board shown on the display.

2. 02

   Power-cycle the oven

   Switch the oven off at the main power switch and back on to confirm the fault is persistent and not a transient read.

3. 03

   Record the model and serial details

   Have the appliance details ready so the technician can supply the correct firmware version for the power board.

4. 04

   Contact the Technical Assistance Service

   Updating the power board firmware is a technician task; contact Smeg Technical Assistance to perform the update as the manual directs.

When to call a professional

Updating the power board firmware requires the correct Smeg software and service tools, and the manual instructs you to always contact the Technical Assistance Service for error messages. This is not a user-serviceable step, so call a qualified Smeg technician to load the correct firmware version onto the power board rather than attempting the update yourself.