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| Troubleshooting |
| Troubleshooting | |
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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 |
| Engine is out of gasoline | Refill gas tank. Honda Engines Owner's Man- |
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| ual. |
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| Engine oil level is low | Try to start engine. Replenish oil, if necessary. |
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| Honda Engines Owner's Manual. |
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| Spark plug is disconnected of damaged | Connect spark plug cable or replace spark plug |
| Cold engine | Use choke |
| Fuel shutoff lever is OFF | Move lever to ON position |
| 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. | Pump output is low, page 7. | Operate without WatchDog active; Manual |
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| 310892. |
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Engine operates, but displacement | Error code displayed | Reference Pressure Control repair, page 14 |
pump does not operate |
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Pump switch is OFF | Turn pump switch ON | |
| Pressure setting too low | Turn pressure adjusting knob clockwise to |
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| increase pressure. |
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| Fluid filter (29) is dirty | Clean filter. Page 22. |
| Tip or tip filter is clogged | Clean tip or tip filter. Manual 309639. |
| Displacement pump piston rod is stuck | Repair pump. Manual 310894. |
| due to dried paint |
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| Connecting rod is worn or damaged | Replace connecting rod. Page 8. |
| Drive housing is worn or damaged | Replace drive housing. Page 9. |
| Electrical power is not energizing clutch | Check wiring connections. Page 12. |
| field | Reference pressure control repair. Page 14. |
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| Reference wiring diagram. Page 23. |
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| With pump switch ON and pressure turned to MAXI- |
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| MUM, use a test light to check for power between clutch |
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| 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 +0.2Ω; if |
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| not, replace pinion housing. |
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| Have pressure control checked by authorized Graco |
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| dealer |
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| Clutch is worn, damaged, or incorrectly | Adjust or replace clutch. Page 10. |
| positioned |
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| pinion housing is worn or damaged | Repair or replace pinion housing. Page10. |
6 | 311046H |