FAULT HUNTER / 08
Valve does not operate
LET US START WITH THE EXPERT
Was the command received, and did the oil path open? Let us check these separately.
Now continue with technical diagnosis using safe observations.Loading diagnostic path…
Other possible causes and technical explanations
Possible causes to examine for this symptom
These causes are preliminary assessments. The same symptom can have different causes in different circuits.
After replacement, verify coil, centre configuration, ports and mounting compatibility.
How to check: Record command and fault indicators and the coil label. Qualified personnel should check electrical measurements, then verify pilot pressure, centre configuration and mounting compatibility.
Possible solution: Use the correct voltage, connector and a valve compatible with the circuit. Perform appropriate maintenance if contamination or a spool fault is confirmed. Never disable protective circuits.
Open the related lesson →After replacement, verify the connector, control wiring and electrical supply.
How to check: Record command and fault indicators and the coil label. Qualified personnel should check electrical measurements, then verify pilot pressure, centre configuration and mounting compatibility.
Possible solution: Use the correct voltage, connector and a valve compatible with the circuit. Perform appropriate maintenance if contamination or a spool fault is confirmed. Never disable protective circuits.
Open the related lesson →The indicator is lit; the coil, pilot pressure and spool require qualified testing.
How to check: Record command and fault indicators and the coil label. Qualified personnel should check electrical measurements, then verify pilot pressure, centre configuration and mounting compatibility.
Possible solution: Use the correct voltage, connector and a valve compatible with the circuit. Perform appropriate maintenance if contamination or a spool fault is confirmed. Never disable protective circuits.
Open the related lesson →No command indication; examine the electrical controls and supply.
How to check: Record command and fault indicators and the coil label. Qualified personnel should check electrical measurements, then verify pilot pressure, centre configuration and mounting compatibility.
Possible solution: Use the correct voltage, connector and a valve compatible with the circuit. Perform appropriate maintenance if contamination or a spool fault is confirmed. Never disable protective circuits.
Open the related lesson →