info Worcester

Status Air discharge function

Service function — appliance is performing air discharge/bleeding cycle, typically lasting approximately 4 minutes.

? What Causes This

Normal service function to remove air from the system.

What This Means

No action required. Allow the air discharge function to complete (approximately 4 minutes). Do not vent air from radiators during this time.

Source: page 10 of the official manual

From the manual

Manual page 10 — Worcester error Air discharge function

This error code appears in:

Worcester Greenstar 1000 GR1000W 30C NG Boiler