Condensate pump: Flashing Green / Flashing Red — Dry-run detected

What does Flashing Green / Flashing Red mean?

The Worcester Bosch Greenstar CDi Boiler's condensate pump lights flash green and red, indicating a dry-run condition, possibly due to air in the system. The pump should automatically restart after one minute.

• Dry-run condition in the pump
• Possible air trapped in the condensate system
• Temporary low water level

Click steps to track your progress.

1. 1

   Observe the condensate pump for at least one minute.

2. 2

   Allow the pump to attempt its automatic restart sequence.

3. 3

   If the pump does not restart or the fault persists, inspect for any visible blockages and contact a service technician if needed.