Graco 3A0868G Alarm and Description Cause Solution DDA1 or DDB1, Diving/Cavitation Error

System Errors

Alarm and Description	Cause	Solution
DDA1 or DDB1	Fluid supply is empty.	Refill fluid supply system.
Diving/Cavitation Error
	Displacement pump is not seating properly.	Rebuild displacement pump and
Pump A (DDA1) or Pump B
		replace packings, balls, and seats.
(DDB1) is diving or cavitating.
	Air in fluid supply system.	Tighten all fittings.
EFA1 or EFB1	Gun not open.	Trigger gun and allow fluid to flow
Park Error		while pump is attempting to park.
Pump A (EFA1) or Pump B
	Fluid lines plugged.	Check and clear all fluid lines, gun tip,
(EFB1) does not park (does		and the mix manifold.
not reach bottom change-
	Dispense valve malfunction.	Clean or rebuild dispense valve. Ver-
over).
		ify that solenoid is operational. Clear
		air lines to valve.
DFA1 or DFB1	Displacement pump is not seating properly.	Rebuild displacement pump and
Stall Up Error		replace packings, balls, and seats.
Pump A (DFA1) or Pump B
	Dispense valve not seating/sealing.	Replace needle/seat on dispense
(DFB1) does not stall up dur-		valve.
ing the pump calibration and
stall test (keeps moving up
when dosing valve is closed).
DGA1 or DGB1	Displacement pump is not seating properly.	Rebuild displacement pump and
Stall Down Error		replace packings, balls, and seats.
Pump A (DGA1) or Pump B
	Dispense valve not seating/sealing.	Replace needle/seat on dispense
(DGB1) does not stall down		valve.
during the pump calibration
and stall test (keeps moving
down when dosing valve is
closed).
DHA1 or DHB1	Displacement pump is not seating properly.	Rebuild displacement pump and
No Stall Error		replace packings, balls, and seats.
Pump A (DHA1) or Pump B
	Dispense valve not seating/sealing.	Replace needle/seat on dispense
(DHB1) does not stall in either		valve.
direction during the pump cali-
bration and stall test (keeps
moving when dosing valve is
closed).

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