Troubleshooting the Graco Motor Control
Troubleshooting the Graco Motor Control
Problem
Cause
Solution
Motor does not spin (chatters) and Event
code is F1DP, F2DP, or WMC0.
Motor leads are wired
incorrectly.
• Correctly wire motor according to
wiring diagram.
Motor does not spin (chatters) and Event
code is T6E0, K6EH, or K9EH.
Feedback cable is
disconnected.
• Ensure the motor feedback cable in
securely connected to both the motor
and Connector 1 of the controller.
• Remove any external EMI sources if
receiving K9EH.
• Route feedback cable away from
motor power cabling.
Motor does not run at full speed.
(Event Codes F1DP, F2DP, V1CB,
V9CB)
Input voltage is low.
• Ensure the line voltage is at least
108/216 VAC.
• Reduce backpressure.
• Change input voltage from 120 VAC
to 240 VAC.
Motor is hot.
(Event Codes F2DT, T3E0, or T4E0
G307 > 100°C )
System is running
outside of the
acceptable range for
continuous operation.
• Reduce the pump back pressure,
flow rate, or duty cycle.
• Add external cooling to motor (fan).
• If receiving T4E0, Max Power Mode
can be enabled to automatically
reduce pump performance to
eliminate overheating.
Membrane buttons do not work or
membrane switch works intermittently.
Membrane switch is
disconnected.
• Ensure the ribbon cable is correctly
inserted into the Control board.
PLCcontrol is intermittent or does not
function; or Event Codes K6EH, K9EH,
L3X0, L4X0 are displayed.
Ribbon cable is
disconnected.
• Ensure the ribbon cable between the
Control board and the Connector
board is correctly inserted.
The display is not illuminated or displays
intermittently.
Display cable is
disconnected.
• Ensure the ribbon cable and clip
are securely installed in the Control
Board.
5V supply has shorted. • Disconnect Connector 3.
• Correct miswiring.
• Reduce current draw on Connector
3 – Pin 1.
• Control shuts down/resets when
cabling is connected to Connector 3.
• The Green LED on the Control board
or the Power board is off, dimly lit, or
blinking.
• The Red LED on the Control board is
dimly lit or blinking.
Internal power supply
has failed.
• Disconnect Connector 3 to validate
the 5V supply isn’t shorted.
• Contact Graco Technical Support.
334188P
43
Tel: 866-777-6060
Fax: 866-777-6383
Springer Pumps, LLC
Website: www.springerpumps.com
Int'l: +001 267 404 2910
