Graco Dyna-Star 77X000 Instructions Manual page 17

Problem
Red fault LED (E) on control board,
blinking
Over current fault - 1 blink
Locked rotor - 2 blinks
Low or high voltage - 3 blinks
Motor temperature is high - 4
blinks
Missing temperature sensor -
blinks - 5 blinks
332514J
Cause
System pressure too high
Current Control Potentiometer Knob
(G) on motor control board is set too
low
System pressure too high
Current Control Potentiometer Knob
(G) on motor control board is set too
low
Motor is damaged
Pump lower is plugged
Faulty input line voltage
System pressure too high
Current Control Potentiometer Knob
(G) on control board is set too low
Motor is damaged
Motor control switch (J) is set to PWR
mode. Pump cycling is controlled by
signal output and pump is running
continuously
High duty cycle
Loose or damaged HALL sensor
cable
Motor is damaged
Troubleshooting
Solution
Reduce system pressure by installing
larger diameter lubrication tubes
Increase the current limit by turning
the Current Control Potentiometer
Knob (G), clockwise.
Reduce system pressure by installing
larger diameter lubrication tubes
Increase the current limit by turning
the Current Control Potentiometer
Knob (G), clockwise.
Separate motor from pump and run
motor. If motor is damaged, replace
motor. See Motor Replacement
instructions, page 28.
Follow Seal Replacement instruc-
tions to disassemble pump lower.
Inspect and clean parts as needed
prior to using them for reassembly.
Replace all damaged and worn
parts. See Seal Replacement
instructions, page 19.
Use a multi-meter to check input line
voltage measure 18-32 volts DC.
Reduce system pressure by installing
larger diameter lubrication tubes.
Increase the current limit by turning
the Current Control Potentiometer
Knob (G), clockwise.
Separate motor from pump and run
motor. If motor is damaged, replace
motor. See Motor Replacement
instructions, page 28.
Change motor control switch (J) to
signal mode (SIG).
Reduce duty cycle.
Verify HALL sensor cable is securely
attached. Tighten connection.
Replace damaged cable.
Separate motor from pump and run
motor. If motor is damaged, replace
motor. See Motor Replacement
instructions, page 28.
17