Troubleshooting
3A4603C Operation, Repair, Parts 27
Electrical
Symptom: Sprayer does not run, stops running, or will
not shut off.
Perform Pressure Relief Procedure, page 13.
1. Turn the ON/OFF switch OFF wait 30 seconds and
then turn power back ON again (this ensures
sprayer is in normal run mode).
2. Turn pressure control knob clockwise 1/2 turn.
3. Remove control box cover to view control board sta-
tus light. To determine which code (or any other
code besides voltage supply) refer to the control
board status light. Turn the ON/OFF switch OFF,
remove the control cover then turn power back ON.
Observe the status light. Blinking LED total count
equals the error code (for example: two blinks
equals CODE 02).
Error Code Messages
Keep clear of electrical and moving parts during trou-
bleshooting procedures. To avoid electrical shock
hazards when covers are removed for troubleshoot-
ing, wait 7 seconds after disconnecting power cord
for stored electricity to dissipate.
CODE MESSAGE ACTION
02 HIGH PRESSURE DETECTED -
RELIEVE PRESSURE
Check for clogs. Use only Graco spray hoses, use a
minimum of 50ft/15m.
03 PRESSURE TRANSDUCER NOT
DETECTED
Check transducer connection.
05 MOTOR NOT SPINNING Check for mechanical failure and check motor
connections. Material may be too thick, thin material.
06 MOTOR OVERHEATED Turn sprayer OFF. Check motor connections. Check
shroud vents for blockage. Sprayer may take up to an hour
to cool.
Problem What to Check How to check
Sprayer does not run at all
AND
Control board status light never
lights
See flow chart,
page 32.
Sprayer does not shut off
AND
Control board status light blinks 2
times repeatedly
Control board.
Replace control board.
To Next Page
Loading...
