Graco Mark VII Max Repair Manual page 16

Troubleshooting
TYPE OF PROBLEM
Sprayer does not run at all
Digital display shows CODE 5
Control board status light blinks
5 times repeatedly
16
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
6. Perform Field Short Test: Test at large 4-pin motor
field connector. There should not be continuity from
pin 4, the ground wire, and any of the remaining
3 pins. If motor field connector tests fail,
replace motor.
7. Check Motor Thermal Switch: Unplug thermal
wires. Set meter to ohms. Meter should read the
proper resistance for each unit (see table below).
-
ti13140a
Resistance Table:
MARK VII
MARK X
6.2k ohms
10.0k ohms
3A2244A