Troubleshooting
Troubleshooting
Problem | Cause | Solution |
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E=XX is displayed | Fault condition exists. | Determine fault correction from table, page 14. |
Engine will not start | Engine switch is OFF. | Turn engine switch ON. |
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| Engine is out of gasoline. | Refill gas tank. Honda Engine Manual. |
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| Engine oil level is low. | Try to start engine. Replenish oil, if necessary. |
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| Honda Engine Manual. |
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| Spark plug disconnected or damaged. | Connect spark plug cable or replace spark |
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| plug. |
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| Engine is cold. | Use choke. |
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| Fuel shutoff lever is OFF. | Move lever to ON position. |
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| Oil is seeping into combustion chamber. | Remove spark plug. Pull starter 3 to 4 times. |
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| Clean or replace spark plug. Start engine. |
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| Keep sprayer upright to avoid oil seepage. |
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False tripping of WatchDog system. | Operating conditions out of WatchDog | Turn pressure down. Contact Graco Technical |
EMPTY is displayed. Pump does not | parameters. | Assistance to adjust WatchDog parameters. |
run. |
| Operate without WatchDog active (see Opera- |
| Pump output is low, page 6. | tion manual). |
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Engine operates, but displacement | Error code displayed. | Reference Pressure Control repair, page 21. |
pump does not operate |
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Pump switch is OFF. | Turn pump switch ON. | |
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| Pressure setting too low. | Turn pressure adjusting knob clockwise to |
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| increase pressure. |
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| Fluid filter is dirty. | Clean filter. |
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| Tip or tip filter is clogged. | Clean tip or tip filter (see gun manual). |
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| Displacement pump piston rod is stuck | Repair pump (see pump manual). |
| due to dried paint. |
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| Connecting rod is worn or damaged. | Replace connecting rod. Page 15. |
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| Drive housing is worn or damaged. | Replace drive housing. Page 16. |
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| Electrical power is not energizing clutch | Check wiring connections. Page 21. |
| field. | Reference Digital Display Messages. |
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| Page 14. |
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| Reference wiring diagram. Page 21. |
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| With pump switch ON and pressure turned to |
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| MAXIMUM, use a test light to check for power |
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| between clutch test points on control board. |
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| Remove clutch wires from control board and |
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| measure resistance across clutch coil. At 70° F, |
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| the resistance must be between 1.2 + 0.2 Ω; if |
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| not, replace pinion housing. |
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| Have pressure control checked by authorized |
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| Graco dealer. |
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| Clutch is worn, damaged, or incorrectly | Adjust or replace clutch. Page 19. |
| positioned. |
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| Pinion assembly is worn or damaged. | Repair or replace pinion assembly. Page 17. |
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3A0243A | 5 |
