Graco ProMix PD2K Repair Parts page 18

Troubleshooting
Pumping Errors
NOTE: In some error codes listed below, a # symbol is shown as the last digit. This symbol represents the applicable
component number, which can vary. The unit's display will show the applicable number as the last digit in the
code. For example, the F1S# code listed in this table will be displayed as F1S1 if the affected component is pump
1, F1S2 for pump 2, and so on.
Code Type Description
DA0# Alarm Exceeded
Maximum
Flow Pump
#
DE0# Alarm Leak
Detected
Pump #
DF0# Alarm No Stall Up
Pump #
Alarm
DG0# No Stall
Down Pump
#
DH0# Alarm No Stall
Pump #
18
Problem
Pump was driven to
its maximum allowed
speed.
This is a manual stall test
failure when the pump
cannot build pressure
to the target "Stall Test
Pressure." Will fault after
30 seconds.
Pump failed the stall
test; did not stall on the
upstroke.
Pump failed the stall
test; did not stall on the
downstroke.
Pump failed the stall
test; did not stall on
either the upstroke or the
downstroke.
Cause
System has a leak
or open valve that is
allowing unrestricted
flow.
Pump is cavitating,
cycling without
restriction.
Viscosity of material is
too thin for nozzle size.
System pressure or
Flow Setpoint is too high
(causing the pump to
work too hard).
No material in the pump
or line.
Leak in the system.
Valve failure, seal failure,
worn rod or cylinder.
Valve failure, seal failure,
worn rod or cylinder.
Valve failure, seal failure,
worn rod or cylinder.
Solution
Inspect system for leaks.
Verify that the pump
is being supplied with
material.
Reduce nozzle size to
create more restriction.
Reduce paint pressure to
lower the flow rate.
Reduce the pressure or
the Flow Setpoint.
Make sure the pump and
down stream color line
are loaded with material.
Determine if leak is
external or internal by
visually inspecting the
system for fluid leakage.
Fix all loose or worn
hoses, fittings, and seals.
Inspect all valve seats
and needles for wear,
and replace worn piston
or throat seals.
Replace inlet and outlet
valve and seal for
up stroke. Replace
piston and throat seals.
Replace rod and cylinder
as necessary.
Replace inlet and
outlet valve and seal
for down stroke. Replace
piston and throat seals.
Replace rod and cylinder
as necessary.
Replace inlet and outlet
valve and seal for up and
down strokes. Replace
piston and throat seals.
Replace rod and cylinder
as necessary.
332709D