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error Worcester
Error Code A28
Unit is not paired with other devices, leading to lack of communication and system functionality disruptions.
? What Causes This
Configuration errors or improper setup during installation that leaves the device unpaired with others in the network.
✓ How to Fix It
Re-initiate pairing procedures through installer's key menu, ensuring all units are correctly registered within EMS bus framework before full operation can resume.
Source: page 19 of the official manual
From the manual
This error code appears in:
Worcester Greenstar Comfort II RF