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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
This error code appears in:
Worcester Greenstar 1000 GR1000W 30C NG Boiler