P (78) - Appliance code not defined

What does P mean?

This error means that the specific appliance code for your boiler model has not been set or is incorrect in the system's configuration. The boiler needs to know its type to operate correctly.

• Appliance code not set during installation or commissioning
• Incorrect appliance code entered in the service menu
• Electronic board (PCB) replacement without correct parameter setting
• Software glitch or corruption

Click steps to track your progress.

1. 1

   Access the service menu (refer to section 3.2.1, Menu 1, usually E.1 or a similar setting) to check the appliance code. Ensure the correct code for your Buderus Logamax Plus GB062 model is entered.

2. 2

   If you're unsure of the correct code, consult your installation manual or contact a qualified technician for assistance in setting the appropriate boiler type code.

3. 3

   After correcting the appliance code, save the settings and perform a boiler reset to apply the changes.

4. 4

   If the code continually resets or cannot be saved, it could indicate an issue with the electronic board (PCB) that requires professional diagnosis.