Communication Failure
Alm-300
ALM-300 Loss
Communication With
ISM
Alm-301
ALM-301 Loss
Communication With
IOB1
Alm-302
ALM-302 Loss
Communication With
IOB2
Alm-303
ALM-303 Loss
Communication With
IOB3
Alm-304
ALM-304 Loss
Communication With
IOB4
Alm-305
ALM-305 Loss
Communication With
IOB5
Alm-306
ALM-306 Loss
Communication With
SIOB
Alm-307
ALM-307 LEN Scan
Error
Alm-308
ALM-308 Loss
Communication With
VFD
Alm-309
ALM-309 Loss
Communication With
VFD Gateway (LEN)
Alm-310
ALM-310 Loss
Communication With
VFD (Modbus)
Alm-311
ALM-311 Loss
Communication With
Danfoss VFD
Alm-350
Sensor Fault - 19DV
1st Stage Bearing
Temp
Alm-351
Sensor Fault - 19DV
2nd Stage Bearing
Temp
Alm-352
Sensor Fault - 19DV
Pump Output Pressure
Alm-353
Sensor Fault - Heat
Reclaim Entering Temp
SRDC-UG-2-14-000
19 Series Carrier®
–
TM
SmartVu
Controls IOM
Automatic when
Unit shuts
the communication
down.
comes back to
normal
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
Manual
As above
Automatic when
As above
the communication
comes back to
normal
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
As above
REVISION
DATE
2.3
Dec 4, 2020
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board As above
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board
Check LEN bus hardware physical wiring
and software log
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board
Bus installation fault or defective slave
board
If (vfd_opt = 7) AND {LEN side
Communication error with VFD lost for 14
[default, can be configurable] consecutive
seconds}
Tested when the compressor is on
whatever the run status and the
communication between Main board and
IOBs is ok, If compressor 1st Bearing
Temp is outside the range of -39.5 to
244.5°F
Tested when the compressor is on
whatever the run status and the
communication between Main board and
IOBs is ok, If compressor 2nd Bearing
Temp is outside the range of -39.5 to
244.5°F
Tested when the compressor is whatever
the run status and the communication
between Main board and IOBs is ok, if
Bearing Outlet Transducer voltage outside
Tested when the compressor is on
whatever the run status and the
communication between Main board and
IOBs is ok, If heat water entering
temperature is outside the range of -39.5
to 244.5°F
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110 OF 168
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