MAN.234 Rev.3 ENG - Use and maintenance manual S19HD (PRO) page
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9 Troubleshooting
Drawback: THE CONSENT LIGHT FOR STABILIZATION DOES NOT
TURN ON.
Causes: 1. The aerial part of the MEWP is not in transport position.
2. Failure fuse 30A battery side.
3. Defective board.
4. Wire removed from the battery.
Remedies: 1. Place the aerial part of the MEWP in transport position.
2. Check if any cable is disconnected from the battery.
3. Replace fuse.
4. Replace the limit switches.
If the problem persists, contact the Service.
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Drawback: THE STABILIZERS DO NOT WORK.
Causes: 1. The hydraulic pump unit is faulty.
2. Stabilizers solenoid valve do not work.
Remedies: 1. Replace the hydraulic pump.
2. Replace the stabilizers limit switches.
If the problem persists, contact the Service.
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Drawback: WITH THE MEWP STABILIZED, THE CONSENT LIGHT FOR
AERIAL PART USE DOES NOT TURN ON.
Cause: 1. The green light does not work.
2. Micro-switch system does not work.
3. Stabilization is incomplete.
Remedies: 1. Replace micro-switch.
2. Further extract outriggers up to soil contact.
If the problem persists, contact the Service.
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Drawback: THE AERIAL PART OF THE MEWP DOES NOT WORK.
Causes: 1. The hydraulic pump unit is faulty.
2. The control stations are not activated.
3. The exchange solenoid valve is not energized.
4. Emergency button activated.
Remedies: 1. Replace the hydraulic pump.
2. Turn on and connect the control station.
3. Replace the exchange valve.
4. Turn the emergency button and reset the MEWP.
If the problem persists, contact the Service.
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Drawback: THE PLATFORM LEVELLING DOES NOT WORK.
Causes: 1. Oil leakage.
2. Cylinder seals worn.
Remedies: 1. Tighten hydraulic connections.
2. Replace the seals.
If the problem persists, contact the Service.
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Drawback: LOW MANOEUVRES SPEED.
Causes: 1. Pump failure.
2. Hydraulic oil level too low.
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