Graco LP 555 Operation - Repair - Parts page 34

Troubleshooting
Problem
Sprayer does not run at all
AND
Display shows E=06
OR
Control board status light blinks 6
times repeatedly
Sprayer does not run at all
AND
Display shows E=08
OR
Control board status light blinks 8
times repeatedly
34
What to Check
Motor is hot or there is a fault in the
motor thermal device.
Check voltage supply to the sprayer
(incoming voltage too low for sprayer
operation).
How to check
8.Use an Ohm meter to check motor
for shorts. Connect (–) meter lead
to motor case. Move the (+) meter
lead to each motor wire. Meter
should read open on all wires.
GROUND
BLACK
RED
YELLOW
OL
-
9.Reconnect motor connector(s) to
control board socket(s). Connect
power, turn ON/OFF switch ON and
control knob to 1/2 turn clockwise. If
motor does not run, replace control
board.
Allow sprayer to cool. If sprayer runs
when cool, correct cause of
overheating. Keep sprayer in cooler
location with good ventilation. Make
sure motor air intake is not blocked. If
sprayer still does not run, replace
motor.
Turn ON/OFF switch OFF and
disconnect power to the sprayer.
ti24724a
3A4203B