Graco InvisiPac HM10 Instructions Manual page 76

Error Codes
Code Description
A7D0 Unexpected
Current: Melter
A7D(C) Unexpected
Current: Applicator
Zone or Hose Zone
A8D0 No Current: Melter
A8D(C) No Current:
Applicator Zone or
Hose Zone
CAC1 Communication
Error: AMZ
CACX Communication
Error: SIOB (System
I/O Board)
(C): Channel and component-specific error. See Zone (C) Lookup Table, page 74 for component error zone.
* Does not shut down system or melter zone
76
Cause
Unexpected current to the
melter
Unexpected current to an
applicator or hose
No current to the melter
No current to an applicator
or hose
System is unable to
communicate with the
AMZ circuit board
System is unable to
communicate with SIOB
Solution
✓Check for damaged wiring.
✓Check heater resistance to ground See Check
Melter and Pump Heater Resistance, page 98.
✓Replace all faulty heaters. See Replace a
Heater Rod, page 99.
✓Replace the AMZ circuit board. See Replace
Auto Multi-Zone (AMZ) Circuit Board, page 100.
✓Install a properly functioning applicator or hose.
✓Check for damaged wiring in the hose.
✓Check heater resistance to ground. See Check
Melter and Pump Heater Resistance, page 98.
✓Replace the AMZ circuit board. See Replace
Auto Multi-Zone (AMZ) Circuit Board, page
100(ref Procedure)
✓Check J24 is plugged into the AMZ circuit
board.
✓Check fuses FHA and FHB on the AMZ circuit
board.
✓Install a properly functioning applicator or hose.
✓Check the F1–F4 fuses on the AMZ circuit
board.
✓Check for damaged wiring.
✓Check for heater resistance. See Check Melter
and Pump Heater Resistance, page 98.
✓Check the dial position. Set the AMZ circuit
board to position 1. See F
✓Verify CAN cable is plugged in Remove and
reconnect, taking care not to cross-thread the
connector nut
✓Verify solid green LED and blinking yellow LED
on the AMZ circuit board.
✓Update the software
✓Verify solid green LED and blinking yellow LED
on the AMZ System I/O board
. 92 on page 101.
IG
3A7259C