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Solution
a. Check electrical connections and battery charge. Valves may
need cleaning, armature stop adjustment, repair kit or new coil.
Low voltage or a weak battery will result in valves not opening com-
pletely.
b. Check output of alternator or battery. (See vehicles owner’s
manual)
a. Solenoid plunger is not functioning. Plunger may be seized up
or coil may be bad.
b. Physically cycle solenoid valve by pushing up at bottom of sole-
noid several times. If it will manually open and close, check electri-
cal switching.
c. Clean inside of solenoid if some movement occurs when electri-
cally operating valve.
d. Clean terminals on solenoid coil.
e. Test coil by exchanging it with working coil from adjacent sole-
noid valve.
f. Replace coil.
g. Install solenoid seal repair kit.
a. Check boom section feed lines to see that they are connected to
the correct boom sections.
b. Switch wires on top of solenoid valves to correct order.
a. Check to see that fuse is correct size. (15-20 amps)
b. Check for short circuit between switch ternimals inside control
box. Carefully separate touching wires.
c. Inspect wiring harness for bare wires, rub points or any damage.
a. Check battery terminals. Clean if necessary.
b. Check water level in battery. Add distilled water and charge if
necessary. (See vehicle owner’s manual)
c. Sprayer components depleting vehicle battery. Allow vehicle to
idle briefly after spraying (with all pumps, foam markers, etc. off) to
allow battery to fully charge.
d. Weak battery. Test and replace if necessary.
a. Driveshaft out of alignment. Realign shaft.
Problem
23. Solenoid valves shut off or
partially close while spray-
ing.
24. Solenoid valve will not click
open but has adequate
power (checked by switch-
ing wires to adjacent sole-
noids.)
25. Control box switches oper-
ate the wrong boom sec-
tions.
26. Control box blows fuse.
27. Vehicle battery low.
Mechanical Problems
28. Sprayer makes chattering
noise when pump is turned
on.
Electrical Problems
33