Troubleshooting
34 3A9095C
Electrical
Symptom: Sprayer does not run, stops running, or
will not shut off.
1. Perform Pressure Relief Procedure, page
14.
2. Unplug sprayer and turn the ON/OFF switch
to OFF.
3. Wait 30 seconds, then plug power supply
cord into a properly grounded electrical
outlet. Switch back ON again (this ensures
sprayer is in normal run mode).
4. Turn pressure control knob clockwise 1/2
turn.
5. Error code will be shown on display.
Error Code Messages
To avoid injury from electrical shock when
covers are removed, wait five minutes
after disconnecting power cord for stored
electricity to dissipate.
To avoid serious injury from electrical
shock and moving parts, do not remove
interior motor cover or touch electrical
components.
CODE MESSAGE ACTION
02 Code 02-High pressure detected Relieve pressure. Check for clogs in filters and hoses. Use minimum
of 50 ft. (15 m) of Graco hose. Check transducer.
03 Code 03-Pressure transducer not
detected
Turn sprayer OFF and unplug the sprayer. Remove shroud. Check
transducer cable and connection to control board. Check
transducer.
04 Code 04-Multiple incoming voltage
surges detected
Turn sprayer OFF and unplug the sprayer. Locate good voltage
supply to prevent damage to electronics.
05 Code 05-Motor not spinning due to high
mechanical load
Turn sprayer OFF and unplug the sprayer. Attempt to spin motor,
see page 36. Motor should spin freely. If motor doesn’t spin easily,
remove pump and re-check by spinning motor again. If motor spins
easily, check control board.
06 Code 06-Motor thermal protection
enabled
Keep sprayer plugged in and allow time to cool. This may take up
to an hour. Check vents in bottom and top of sprayer for blockage.
If applicable, check fan connector and wiring, fan should be
running. Unplug sprayer and check to make sure the motor spins
freely, see page 36.
08 Code 08-Incoming voltage too low for
sprayer operation
Turn sprayer OFF and unplug the sprayer. Locate good voltage
supply to prevent damage to electronics.
09 Code 09-Communication to encoder
failed
Turn sprayer OFF and unplug the sprayer and wait five minutes.
Remove shroud. Check cables and connections. Check motor, see
page 36.
10 Code 10-Control board thermal
protection enabled
Keep sprayer plugged in and allow time to cool. This may take up
to an hour. Check vents in bottom and top of sprayer for blockage.
If applicable, check fan connector and wiring, fan should be
running. Unplug sprayer and check to make sure the motor spins
freely.
12 Code 12-Excessive current protection
enabled
Cycle power ON and OFF. If problem persists, check motor, see
page 36.
15 Code 15-Motor not spinning, no motor
current detected
Turn sprayer OFF and unplug the sprayerand wait five minutes.
Remove shroud. Check cables and connections. Check control
board. Check motor, see page 36.
17 Code 17-Control board plugged into
wrong voltage
Turn sprayer OFF and unplug the sprayer, Locate good voltage
supply to prevent damage to electronics, see page 36.
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