Graco 3A1705J Paint Sprayer User Manual


 
Troubleshootin
g
Error
Code
Error
Position
Type Name
Cause Solution
Low chemical supply
temperature.
Recirculate heated chemical
back to drum in cold conditions
before spraying. Chemical
below 32°F(0°C) at startup.
System stored below
20°F(-7°C) causing slow
control valve operation.
Ensure ambient temperature is
above 20°F(-7°C).
Plugged filter in sight glass.
Indicated by consistent
low A and B temperature
alarms.
Clean or replace filter. See
system repair manual.
Coolant debris stuck in
valve pilot hole or passages.
Inspect and clean control valve.
Repair or replace if necessary.
See system repair manual.
No coolant flow Check coolant level. Check for
coolant flow in sight glass.
Ensure that the circulation
pump has 240 VAC. If not,
replace the circulation pump.
See system repair manual.
(T8AE onl
y) J6 connector on
load cent
er “Heat Valves”
location
is not centered.
Reconnect J6 connector on
load center in centered location.
Bad valve
solenoid coil.
Turn on th
e manual valve
switch (
MV), on the load center,
and see i
f the valve solenoid
shifts.
For coolant valve LED
identifi
cation, see system repair
manual.
If solenoid does not
shift, r
eplace solenoid coil. See
system r
epair manual.
Valve so
lenoid not getting
12 VDC e
lectrical signal.
Verify 12 VDC signal is at the
valve solenoid coil connector.
All three valves are normally
closed with power removed.
See system repair manual
for valve wiring harness
identification diagram.
Bad load center. Red, blue, and green LEDs
should light up on load center
board. If not, replace load
center. See system repair
manual.
T8AE
T8BE
Heat
Exchanger
ALARM Temperature Not
Rising Hx A (T8AE)
Temperature N
ot
Rising Hx B (T8
BE)
A and B heat
exchanger RTD cables
cross-connected to splitter
cable.
See Sy
stem Repair Manual for
corre
ct connection.
86 3A1705J