Lennox Core Unit Controller Setup Manual page 48

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SELECTED ALARMS (MARKED WITH * IN TAbLE RESULT IN THE CLOSURE OF THE SERVICE RELAY CONTACTS (DO1).
ALARM
DISPLAY MESSAGE
CODE
243
UTEC VALVE FAULT LOCKOUT GV2
244 - 255
RESERVED
500
Error Reading USB Device
501
USB Device not Mounted
502
USB Device Full
503
Invalid DIN number
Table 11. CORE Control System Alarm and Event Codes
EVENT ACTION
Error Reading USB Device
USB Device not Mounted
USB Device Full
Invalid DIN number received from M4. Indicates DIN incompatibility
48

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