Graco Therm-O-Flow 200 Instructions - Parts Manual page 57

Error Location Type
CAC_ ADM Alarm
CBGX Gateway Alarm
CBT_ AMZ Alarm
CBV_ AMZ Alarm
3A8005A
Error Name Error Description
Communicatio Communication lost
n Error U_ between ADM and
Heat Module
Fieldbus The fieldbus has
Reset performed a reset
Communicatio Communication lost
n Error U_D_ between AMZ MZLP4
and ADM
Communicatio Communication lost
n Error U_D_ between AMZ DB and
ADM
Cause
No 24 VDC Reconnect or replace
power supply CAN cable connecting
to ADM AMZ and ADM. If CAN
connection good, check
24V power supply wiring
in side the heat box.
Make sure AC power to
pump is turned off before
checking power supply.
Yellow LED on AMZ
board should be flashing.
Cross threaded CAN cables carry 24 V
CAN cable. DC power and
communication between
modules. A cross
threaded CAN cable
connector may cause
problems with
communication and/or
power to modules.
Carefully check for cross
threaded CAN
connections on the ADM
and AMZ. Yellow LED on
AMZ board should be
flashing.
Changing the No action necessary
fieldbus setup
properties
No AC power Verify AMZ MZLP4 is
to the AMZ turned on by confirming
MZLP4 disconnect switch of the
heat box is in the ON
position.
Faulty AMZ Replace AMZ MZLP4
MZLP4 control control board
board
No AC power Verify AMZ DB is turned
to the AMZ DB on by confirming
disconnect switch of the
heat box is in the ON
position.
Faulty AMZ DB Replace AMZ DB control
control board board
Troubleshooting
Solution
57