Troubleshooting
Error Location Type Description
Cause Solution
Module does not
have software.
Inse rt a syste m token into
the ADM module and cycle
the power. Wait until the
upload is complete before
removing the token.
Dial set to wrong
position.
Ensure the HCM dial is set
to the correct position:
• H-30=0
• H-40=1
• H-50=2
•H-XP2=3
•H-XP3=4
No 24 VDC supply
to module.
Green light on each module
should be lit. If green light is
not lit, check to make sure
each CAN c ab le conn ec tio n
is tight. Verify the power
supply is outputting 24
VDC. If not, check power
supply wiring. If wiring is
okay, replace the power
supply.
CACM HCM HCM Communica-
tion Error
Loose or broken
CAN cable.
Check the CAN cables
running between GCA
modu les and tighten of
needed. If the problem
still persists move each
cable around the connector
and watch the flashing
yellow light on the GCA
modu les. If the yellow light
stops flashing, replace the
CAN cable.
20 334946A
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