VAR8 and Variants Operation, Commissioning, Fault Finding, and Maintenance Guide -
Is
Page 151 of 166
sue: 02 complete, approved
Fault Description
Fault Code(s)
Reported and Logged
Suggested Action
Remote I/O Unit Comms
Fault
REMXX REMOTE I/O COMMS
XX=Remote I/O Unit Address
Check the Comms and power wiring to Remote I/O
Unit.
Check RS485 termination.
Check that address of Remote I/O Unit is correct.
If all above ok, suspect the unit itself. Check the unit’s
internal CPU and COMMS LEDs.
Remote I/O Unit
analogue channel fault
(open or short)
REMXX ANALOGUE I/P nn
XX=Remote I/O Unit Address
nn=Analogue Input Channel
Check wiring of Volume Control or selector on specified
Analogue channel.
Remote I/O Unit Digital
Output channel fault
(load disconnected or
over current)
REMXX DIGITAL O/P nn
XX=Remote I/O Unit Address
nn=Analogue Input Channel
Check load connection on particular Digital channel
Remote I/O Unit Reset REMXX RESET
XX=Remote I/O Unit Address
In repeated occurrence, the Remote I/O Unit should be
replaced.
Remote I/O Unit Over
Temperature (70 deg C)
REMXX TEMP
XX=Remote I/O Unit Address
The system should be investigated to see how such a
high ambient temperature occurred.
Remote I/O Unit Fuse REMXX FUSE
XX=Remote I/O Unit Address
Possible short circuit or overload on the I/O units DC
output.
Fire Loop Interface with
incompatible protocol
REMXX PROTOCOL The Fire Loop interface protocol is not supported by the
VAR8.
Failure of supply to
Router within the unit.
INT-01 SUPPLY FAULT
Check mains and battery switches are on and that both
supplies are present.
Failure on Internal fault
log
INT-01 FAULT LOG ERASED If the unit detects a problem with a fault log this fault is
logged, the system will install a blank log and keep
working functionally.
If repeated occurrence then the router in the Electronics
Module is faulty. This, or the entire Electronics Module
will need replacing.
Failure of Configuration
Non-volatile memory
INT-01 NON-VOL MEMORY The router in the Electronics Module is faulty. This, or
the entire Electronics Module will need replacing.
Internal Fuse INT-01 FAULT 01 Check internal fuse.
Communications failure
with Audio Control Unit
INT-01 SLAVENODE COMMS Check connections to network cabling. The Audio
Control Unit has several diagnostic features, which help
pin-point any failures around the network. If the network
seems intact, then the Network Interface Card within
the VAR8 may need replacing.
Communications failure
between VAR8 and its
Network Interface unit
INT-01 NIU FAULT Suspect the Network Interface Card or its
interconnection to the Router.
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