Graco IronMax V Repair Manual page 11

TYPE OF PROBLEM
Sprayer does not run at all
Digital display shows E=05
Control board status light blinks
5 times repeatedly
332252A
WHAT TO CHECK
Control is commanding motor to run
but motor shaft does not rotate.
Possibly locked rotor condition, an
open connection exists between
motor and control, there is a
problem with motor or control board,
or motor amp draw is excessive.
HOW TO CHECK
1. Remove pump pin and try to run sprayer. If motor
runs, check for locked or frozen pump. If sprayer
does not run, continue to step 2.
2. Set sprayer to OFF and disconnect power to
sprayer.
3. Disconnect motor connector(s) from control board
socket(s). Check that motor connector and control
board contacts are clean and secure. If contacts
are clean and secure, continue to step 4.
4. Set sprayer to OFF and spin motor fan 1/2 turn.
Restart sprayer. If sprayer runs, replace control
board. If sprayer does not run, continue to step 5.
5. Perform Spin Test: Test at large 4-pin motor field
connector. Set sprayer to OFF and disconnect
power to sprayer. Test motor by placing a jumper
across pins 1 & 2. Rotate motor fan at about 2
revolutions per second. A cogging resistance to
motion should be felt at the fan. The motor should
be replaced if no resistance is felt. Repeat for pin
combinations 1 & 3 and 2 & 3. Pin 4 (the green wire)
is not used in this test. If all spin test is positive,
continue to step 6.
Green Blue Red Black
STEP 1:
Green Blue Red Black
STEP 2:
Green Blue Red Black
STEP 3:
Troubleshooting
11