Graco XM PFP Setup & Operation page 63

Individual Control Module LED Diagnostic Information
The following LED signals, diagnosis, and solutions are the same for the display module, advanced fluid control
module (AFCM), fluid control cube, high power temperature control module (HPTCM), and USB module. LEDs are
located next to the module power cable.
Module Status LED Signal
Green on
Blue
(HPTCM only)
Yellow
Red solid
Red flashing fast
Red flashing slow
Troubleshooting
All electrical wiring must be done by a qualified
electrician and comply with all local codes and
regulations.
Problem
Display not lit. No green light present on
back of display module.
Display not lit on system. Green light is
present on back of display module.
3A2776K
Diagnosis
System is powered up and power
supply voltage is greater than
11 Vdc.
Voltage is being sent to the heater
Internal communication in progress
Hardware failure
Uploading software
Token error
NOTE: Pressure Relief Procedure on page 46 before
servicing the system.
NOTE: The sprayer operates using air pressure. Many
problems are caused by inadequate air supply. The inlet
air pressure gauge cannot drop below 80 psi (0.5 MPa,
5.5 bar) while running.
Cause
No electric power. Disconnect "off" or
breaker "open."
Voltage jumpers not installed or config-
ured in power junction box.
No green lights present on display, FCM,
or USB module.
No display power through CAN cable.
Green light in present on AFCM, but is
not present on USB module.
Green light is present on USB module.
Display module failed.
Troubleshooting Information
Solution
---
---
---
Replace module.
---
Remove token and upload software
token again.
Solution
Reset main disconnect and breaker.
Install red jumpers in junction box termi-
nal blocks. See Connect Power Cord on
page 19.
Check for 24 Vdc on J1, pins 2 and 3, of
power supply. See Electrical Schematics
in the XM PFP repair manual. If there is
not 24 Vdc, replace power supply mod-
ule. See XM PFP repair manual.
Check CAN cable. Replace if necessary.
See the XM PFP repair manual.
Check CAN cable. Replace if necessary.
See the XM PFP repair manual.
Replace display module. See the XM
PFP repair manual.
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