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Troubleshooting
Problem
Cause
Solution
Will not dispense – ready light is on
di
Pump failed
Repair pump
or dim
Check valve installed backward
Verify fluid flow path through check
valve
Air solenoid failed
Clean or replace solenoid
Fluid solenoid and light
S
Fluid solenoid plumbing installed
incorrectly
S
Verify the correct plumbing instal-
lation from the markings on the
solenoid (i.e., P=Input [pressure],
R=Output [Return]
S
Carbon steel fluid solenoid being
used with anti-freeze
S
Use 514150 fluid solenoid for anti-
freeze
S
Fluid solenoid wired incorrectly
S
Verify wiring using this manual
(see pages 6-9) and the Ready-
Light instruction form (307696)
S
Incorrect bulb in Ready Light kit
S
Verify bulb is Graco JKL1820
S
Fluid solenoid is clogged or has
failed
S
Clean or replace the fluid solenoid
Will not dispense – panel light on,
ready light off
Incorrect wiring at the back of the
console
Verify wiring, (see pages 6-9)
y g
Wiring continuity problem
Check voltage on the back of panel.
If the reading is 20–24 VDC at the
box with no light on and the solenoid
is not active, replace wiring (see
pages 6-9).
Console failure
If the voltage reading is not 20-24
VDC, replace console
Fluid solenoid is clogged or has
failed
Clean or replace solenoid
Low dispense flow – ready light is on Clogged inlet strainer on dispense
valve
Clean or replace the inlet strainer
Fluid solenoid is clogged or has
failed
Clean or replace the fluid solenoid
Pump is undersized (pressure and/
or flow) for application
Replace with properly sized pump
Plumbing is blocked somewhere in
the system
Flush plumbing lines without dis-
pense valves or filter screens
installed
Will not count – pump is working,
ready light on
Pulse meter failed
Swap pulse meter module with
known good module to determine if
problem is the pulse meter, wiring,
or control box
Pulse meter module installed incor-
rectly
Verify module is wired according to
the polarity and that the notch of the
module aligns with the notch in the
module base of the pulse meter
Wiring problem
If still no count, verify voltage on the
lower pin strip. Should read a mini-
mum or 15 VDC (see pages 6-9).
Console failed
Replace console
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