Graco L20c Operation page 33

Code
Symbol No.
E1
E2
E4
E7
E7
E5
*LED (B, page 24) will flash a code, pause, then repeat.
Table 4: Diagnostic Codes
Code Name Diagnosis
Runaway Pump running faster than set
runaway limit.
Diving Up Leak during upstroke.
Diving Down Leak during downstroke.
Disconnected Solenoid is disconnected.
Solenoid
Drum Empty Drum empty sensor has
tripped.
Drum Low Drum low sensor has tripped. Replace empty drum with
Reed Switch The air motor has seen
multiple up strokes without a
down stroke, or vice versa.
Maintenance Maintenance Counter has
Counter counted down to 0 from
Expired setpoint.
Remote DataTrak Operation
Cause
• Increased air pressure.
• Increased fluid output.
• Exhausted fluid supply.
Worn piston valve or
packings.
Worn intake valve or
priming rod seal.
• Solenoid unplugged.
• Damaged solenoid
wires.
Replace empty drum with
full drum to clear.
full drum to clear.
Damaged or disconnected
reed switches.
Number of
cycles/gallons/liters
specified by setpoint have
passed since last reset.
Accessory
LED Light
Flash Tower
Code* Code
2 Red Solid
7 Yellow
Solid
6 Yellow
Solid
3 Red Solid
4 Red Solid
4 Red
Flashing
8 Yellow
Solid
5 Yellow
Flashing
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