Fault 02 Code 40 — Internal fault, incorrect module type detected (FR110)

What does Fault 02 40 mean?

For the FR110 controller, the Worcester Bosch Greenstar CDi Boiler displays Fault 02 with code 40, indicating an internal fault where an incorrect module type has been detected in the system.

• An incompatible or incorrect module is connected to the IPM
• Module misidentification by the system

Click steps to track your progress.

1. 1

   Identify any recently installed modules or devices in the system.

2. 2

   Verify that all connected modules are compatible with the FR110 controller.

3. 3

   If an incorrect module type is identified, contact a qualified heating engineer to replace the IPM.