Error 55 — PCB not programmed

What does 55 mean?

The boiler displays error code 55, indicating that the PCB (Printed Circuit Board) has not been programmed. This usually happens after a new PCB installation or if the memory stick is not correctly connected.

• Memory stick not properly connected to the PCB.
• New PCB installed without following the full programming instructions.
• Corruption of the PCB's programming.

Click steps to track your progress.

1. 1

   Ensure the memory stick (Easy Key Service) is securely and properly connected to the PCB.

2. 2

   Refer to the 'PCB Replacement (with easy key service)' instructions in the troubleshooting guide (or new PCB packaging) to complete the programming.

3. 3

   If the error persists after ensuring proper connection and programming, consult a professional technician.