Solenoid valve common faults and troubleshooting methods
Oct 10, 2019
| Question category | Reason | Solution |
| Power is not working | Poor electrical connection | Recheck the line and connect |
| The voltage across the coil (not at the power supply) is less than the rated voltage range | Adjust to normal voltage range | |
| Coil damage, short circuit or open circuit | Replace the new coil | |
| Medium pressure is greater than the nominal pressure of the solenoid valve | Reduce media pressure or replace higher pressure models | |
| Impurities in the medium cause the core to become stuck | Remove and install the solenoid valve and install the filter at the inlet | |
| Corrosion of the medium causes the core to rust | Replace the solenoid valve series for the medium | |
| The viscosity of the medium is greater than the value specified by the solenoid valve | Replace the solenoid valve series for the medium | |
| Can't close | The balance hole on the diaphragm or piston is blocked by the magazine | Check the dredge balance hole and install the filter |
| Spring stuck or damaged | Check replacement spring | |
| Impurities in the medium cause the core to become stuck | Remove and install the solenoid valve and install the filter at the inlet | |
| Corrosion of the medium causes the core to rust | Replace the solenoid valve series for the medium | |
| The viscosity of the medium is greater than the value specified by the solenoid valve | Replace the solenoid valve series for the medium | |
| Internal leakage | Impurities in the media cause the valve port to fail to seal | Remove and install the solenoid valve and install the filter at the inlet |
| Excessive temperature of the media causes damage to the seal | Replacement seal | |
| External leakage | Poor connection of pipe joint | Check and reconnect, add filler |
| Mechanical impact causes the component to rupture | Replacement parts or entire valve | |
| Too much noise | Impurities in the medium cause the core to fail to pick up | Remove and install the solenoid valve and install the filter at the inlet |
| The coil is loose and unlocked | Locking coil nut |
