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List of Message Abbreviations
LCD Message Text Device Type
BGU
Break Glass Unit ZT-MCP/AD
CO
Carbon monoxide detector
DUAL
Optical/heat multi-sensor detector
HEAT Heat
detector
INV
Invalid sensor type
ION
Ionisation detector
MON
Monitor outstation/ancillary
O/S Outstation
OPT
Optical detector
LCD Message Text Event Description
D.FLT
Data Fault – the analogue value reported by the device is not
valid.
DADDR
Double Address - two or more devices exist with the same
address
FUSE FAILED
Auxiliary power supply fuse failed
LINE FAULT
Open circuit fault detected in loop cable. This may be due to an
operation of short circuit isolators.
R.FLT
Remote Fault - at the address indicated.
RMVD
Removed – the loop device is not responding.
TEST
Device is in test mode
W.TYPE/WTYPE
Wrong Type – the device at this address is different from that
configured for the address.