Fault 56 Codes 147 or 154 — At least one pump/valve in manual mode

What does Fault 56 147-154 mean?

The Worcester Bosch Greenstar CDi Boiler displays Fault 56 with codes 147 or 154, indicating that at least one pump (e.g., solar pump SP or disinfection pump PE) or valve is currently set to manual mode instead of automatic.

• Solar pump (SP) or disinfection pump (PE) is manually operated
• A valve in the system is set to manual mode
• System components are not set to 'Auto' mode

Click steps to track your progress.

1. 1

   Access the system parameters for pumps and valves.

2. 2

   Identify any pumps (SP, PE) or valves that are currently in manual mode.

3. 3

   Reset the parameters for these pumps or valves to 'Auto' mode.

4. 4

   Save the settings and verify if the fault clears. If the issue persists, contact a qualified heating engineer.