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30941414
Control Board Diagnostics
Digital Display Messages
Relieve press ure before repair; page 4. No display does not mean that sprayer is not pres surized.
DISPLAY SPRAYER
OPERATION
INDICATION ACTION
No Display Sprayer may be pressurized. Loss of power or disp lay
not connec ted
Check power source. Relieve
pressure befor e repair or dis-
assembly. Verify display is
connected.
Sprayer may be pressurized. Pressure less than
200 psi (14 bar, 1.4 MPa)
Incr ease pressure as needed
Sprayer is pressurized. Power is ap-
plied. (Pressure varies with tip size and
pressure control setting.)
Normal operation Spray
Sprayer stops. Engine is running. Exceeded pressure limit Remove any filter clogs or
flow obstructions. Make sure
gun trigger is locked open if
using AutoClean valve.
Sprayer stops. Engine is running. Pressure transducer faulty,
bad connecti on or broken
wire.
Check transducer connections
and wire. Replace transducer
or control board, if necessary.
Sprayer stops. Engine is running. High clutch curr ent 1. Check clutch 7--pin bulk-
head connecto r. Clean
contac ts.
2. Measure 1.2 ±0.2 Ω (Line-
Lazer III 3900); 1.7 ±0.2Ω
(LineLazer III 5900)
across clutch field at 70_F
3. Replace clutch field as-
sembly
Sprayer stops. Engine is running.
Display alte rnates E=06.
High clutch temperature 1. If clutch is new , let spra y-
er cool down and then re -
start
2. Inspect clutch. Replace
clutch if there is excessive
wear.
3. Remove pump pin, sepa-
rate pinion housing from
clutc h housing. Rotate
rotor clockwis e to check
for excessive drag.
After a fault, follow these steps to restart sprayer:
1. Correct fault conditi on
2. Turn sprayer OFF
3. Turn sprayer ON