Pressure Control
Control Board Diagnostics
1.Fig. 11. Remove five screws (307) and cover (322).
2.Start sprayer.
3.Turn ON/OFF switch ON.
4.Observe LED operation and reference following table:
LED | SPRAYER OPERATION | INDICATES | WHAT TO DO | |
BLINKS |
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Two times | Sprayer shuts down and LED contin- | Run away pressure. | 1. | Check pressure transducer con- |
repeatedly | ues to blink two times repeatedly | Pressure greater than |
| nection at control board |
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| 4500 psi (310 bar, 31 | 2. | Replace pressure transducer |
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| MPa). | 3. | Replace control board |
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Three | Sprayer shuts down and LED contin- | Pressure transducer is | 1. | Check pressure transducer con- |
times re- | ues to blink three times repeatedly | faulty or missing |
| nection at control board |
peatedly |
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| 2. | Replace pressure transducer |
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| 3. | Replace control board |
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Four times | Sprayer shuts down and LED contin- | Generator voltage is | 1. | Increase engine throttle |
repeatedly | ues to blink four times repeatedly | low | 2. | Check wiring connections |
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| 3. | Service Honda engine alternator |
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Five times | Sprayer shuts down and LED contin- | High clutch current | 1. | Check clutch |
repeatedly | ues to blink five times repeatedly |
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| nector. Clean contacts. |
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| 2. | Measure 1.7 ±0.2Ω across clutch |
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| field at 70_F |
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| 3. | Replace clutch field assembly |
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Six times | Sprayer shuts down and LED contin- | High clutch temperature | 1. | If clutch is new, let sprayer cool |
repeatedly | ues to blink six times repeatedly |
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| down and then restart |
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| 2. | Inspect clutch. Replace clutch if |
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| there is excessive wear. |
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| 3. | Remove pump pin, separate pin- |
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| ion housing from clutch housing. |
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| Rotate rotor clockwise to check |
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| for excessive drag. |
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