Solenoid valve troubleshooting

Solenoid valve does not work after power on
Check if the power wiring is bad → Rewire and connect the connectors
Check if the power voltage is within ± working range - → Adjust to normal position range
Is the coil desoldering → Resolder
The coil is short-circuited → Replace the coil
Is the working pressure difference inappropriate → Adjust the pressure difference → Or replace a corresponding solenoid valve
The fluid temperature is too high → Replace a corresponding solenoid valve
Is the main valve core and moving iron core of the solenoid valve stuck due to impurities → Clean, if the seal is damaged, replace the seal and install the filter
The liquid viscosity is too high, the frequency is too high and the life is over → Replace the product
The solenoid valve cannot be closed
The seal of the main valve core or the moving iron core is damaged → Replace the seal
Is the fluid temperature or viscosity too high → Replace the corresponding solenoid valve
Is impurity entering the solenoid valve core or the moving iron core → Clean
The spring has reached its service life or is deformed → Replace
The throttle hole and balance hole are blocked → Clean in time
The working frequency is too high or the service life has reached → Change the product or update the product
Other situations
Internal leakage → Check whether the seal is damaged and whether the spring is poorly assembled
External leakage → The connection is loose or the seal is broken → Tighten the screws or replace the seal
Noise when power is on → The fasteners on the head are loose, tighten them. The voltage fluctuation is not within the allowable range, adjust the voltage. The iron core suction surface has impurities or is uneven, clean or replace it in time.