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error Honeywell
Error Code READY indicator lights (Green)
System is ready to be armed with no faults present.
? What Causes This
All protection zones are secure and system is ready for arming.
✓ How to Fix It
No action needed. Proceed with arming the system.
Source: page 13 of the official manual
From the manual
This error code appears in:
Honeywell Vista-20P Security System