Graco Mark V Premium Repair Manual page 17

Sprayer Will Not Run
(See following page for steps)
Remove control box cover. Turn
sprayer ON. Observe control
board status light on control board
(see page 12).
No light
Once Normal operation
Light on Control board
Continuously commanding
motor to run
Flashing See Error Code
section for further
troubleshooting
3A2333B
See Step 1. Do
you have over 100
AC volts (220 for
230V units)?
YES
See Step 3. Is the
proper reading
present through the
thermal switch
wires?
YES
See step 4. Does
NO
the motor run?
YES
Replace
potentiometer.
See Step 2. Do
you have over
100 AC
NO
(220 for
230 VAC units)?
YES
Replace the
ON/OFF switch.
If motor is hot, let cool and
retest. If Step 3 still shows
incorrect resistance, replace
NO
motor. The motor has
a defective thermal device.
Connect a test
transducer to the
board. Does the
motor run?
YES
Replace the
transducer
Troubleshooting
Repair or
replace
NO
power cord.
NO
Replace the
control board.
17