Graco 16W984, ti23055a, 16W884, 16W881, 16W867, 16W887, 16W873, 16W871, 16W882 Control Board Malfunction

Page 25

Troubleshooting

Control Board Malfunction

Troubleshooting Procedure

(see following page for actual steps):

Remove control box cover. Turn sprayer ON. Observe control board Green and Red LED lights.

No light

 

Once

Normal operation

Red light on

Control board

continuously

commanding

 

engine to run

Green light on

WatchDog

Go to step 1. Does switch test positive?

Replace the

NO switch.

continuously

enabled

 

 

Flashing

See error code

 

section for further

 

troubleshooting

 

 

Red light on

Model not

continuously with

selected

potentiometer

 

OFF after a

 

replacement

 

board is installed

 

Go to step 3. Is 10-12

VDC present?

NO

YES

Go to step 2. Do you have proper engine voltage?

 

 

 

Check wiring

 

 

 

from J1 and J2

 

 

 

for proper con-

 

 

 

nection. If proper

 

 

 

connection is

 

 

 

detected, repair

NO

 

 

 

 

or replace engine

 

 

 

 

 

 

generator.

 

 

 

 

YES

YES

Connect

Go to step 4. Is 1-3 Ohms reading pres- ent?

YES

Mechanical problem. Repair or replace clutch/pinion assembly.

NO

If low resistance is present in step 4, the problem is a shorted field. Replace pinion. If an open in the wiring is present, check pinion wiring connections.

Go to step 5. Does the clutch engage?

YES

Replace the potentiometer.

atest transducer to

NO

 

 

 

 

the board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Does the

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

clutch

 

 

 

 

 

 

 

 

 

 

 

engage?

 

 

 

NO

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace

 

 

 

 

 

YES

 

the

 

 

 

 

 

 

 

 

 

control

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

board.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Replace

 

 

 

 

 

 

 

 

 

the

 

 

 

 

 

 

 

 

 

transducer.

 

 

 

 

 

 

 

332919C

25

Image 25
Contents Operation Table of Contents Fire and Explosion Hazard Equipment Misuse Hazard Standard Models 3400, 3900, 5900, 5900HD, 7900, 7900HD Component IdentificationProContractor Models 3900, 5900, 7900, 5900HD, 7900HD Ironman Models 5900, 7900, 7900HD Lo-Boy Models 3900, 5900 Convertible Models Pressure Relief Procedure Grounding Setup Change Engine to Motor Convertible Models OnlyStartup Spray Switch Tip Guard AssemblyWatchDog Protection System Clearing Tip ClogsProContractor and Ironman units only ProContractor units only Hose ReelProContractor and Ironman units Operation Main Menu Digital Tracking SystemChange Display Units Job GallonsPress and hold DTS button to clear error code to zero Cleanup Turn prime valve down Drain position Pressure Relief Procedure MaintenanceProblem Cause Solution TroubleshootingTroubleshooting Fluid Pump Runs Constantly Troubleshooting ProcedureControl Board Malfunction Volts Control Board Malfunction StepsConvertible Electric Motor Will Not Run Convertible Electric Motor Will Not Run Steps See step Is there over 10-20 AC volts? Beep Two blinks is the same as E=02 Digital Display MessagesPinion Assembly/Clutch Armature Removal Pinion Assembly/Clutch Armature/ClampInstallation Models Technical DataMetric Models Honda GX160 Engine Ansi Power Rating @ 3600 rpm Horsepower Honda GX200 Engine Ansi Power Rating @ 3600 rpm Horsepower Graco Information Graco Standard Warranty