Graco Inc. 1595 Premium Hi-Boy - Manual (Page 16)

Troubleshooting
16 3A0157A
Sprayer does not run at all 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. 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 model (see table below).
Digital display shows E=05
Control board status light blinks
5 times repeatedly
TYPE OF PROBLEM WHAT TO CHECK HOW TO CHECK
Resistance Table:
695 0 ohms
795 2k ohms
1095 3.9k ohms
1595 6.2k ohms
MARK IV 2k ohms
MARK V 120V 6.2k ohms
MARK V 240V 3.9k ohms
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ti13140a