Furuno FMD-3100 Operator's Manual page 340

APPENDIX 4 ALERT LIST
No. Text
420 Other Sensor 20
COM Error
421 Other Sensor 21
COM Error
422 Other Sensor 22
COM Error
423 Other Sensor 23
COM Error
424 Other Sensor 24
COM Error
AP-38
Default Meaning
Caution
Data from No.20 other
sensor has been
discontinued for more than
set time.
(Set at installation)
Default: 180 seconds
No.20 other sensor is
turned off, or there is a
problem with network.
Caution
Data from No.21 other
sensor has been
discontinued for more than
set time.
(Set at installation)
Default: 180 seconds
No.21 other sensor is
turned off, or there is a
problem with network.
Caution
Data from No.22 other
sensor has been
discontinued for more than
set time.
(Set at installation)
Default: 180 seconds
No.22 other sensor is
turned off, or there is a
problem with network.
Caution
Data from No.23 other
sensor has been
discontinued for more than
set time.
(Set at installation)
Default: 180 seconds
No.23 other sensor is
turned off, or there is a
problem with network.
Caution
Data from No.24 other
sensor has been
discontinued for more than
set time.
(Set at installation)
Default: 180 seconds
No.24 other sensor is
turned off, or there is a
problem with network.
Remedy
Check the connection with
No.20 other sensor and
network.
Check the connection with
No.21 other sensor and
network.
Check the connection with
No.22 other sensor and
network.
Check the connection with
No.23 other sensor and
network.
Check the connection with
No.24 other sensor and
network.