Graco Mark X 240 Volt 255914 Instructions page 35

Electrical
DIGITAL CONTROL BOARD
DISPLAY STATUS LIGHT
E=05 Blinks 5 x repeatedly
E=06 Blinks 6 x repeatedly
E=08 Blinks 8 x repeatedly
E=09 Blinks 9 x repeatedly
E=10 Blinks 10 x repeatedly
E=11 Blinks 11 x repeatedly
E=12 Blinks 12 x repeatedly
E=14A Blinks 14 x repeatedly
E=14B Blinks 14 x repeatedly
312649H
INDICATION WHAT TO DO
Possible locked 1
pump or drive. May 2
be motor connection 3
or wiring error.
Motor is too hot or 1
motor/thermal device 2
connection may be
bad.
Low line voltage. Ensure line voltage is above 185 Vac.
Motor sensor failure. Make sure motor sensor (resolver) is connected to the control
board and check wiring for damage.
High control board Make sure the motor air intake is not blocked.
temperature.
Excessive motor Check for damaged gears or disconnected pump.
speed.
High Current. 1
2
3
Faulty check valve. Inspect and/or repair pump check valve.
Failed or no check Repair or install pump check valve.
valve.
Check motor wiring connections.
Check for locked or frozen pump or drive train.
If all motor wiring connections are OK and pump/drive train
are not locked up, replace control board, then motor.
Check all wire connections from motor to control board.
If connections are all ok, 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.
Check for locked or frozen pump or drive train.
Check for possible short circuits in wiring.
Check pressure output and replace transducer if pressure
is excessive.
Troubleshooting
35