Solenoid Valve Troubleshooting

Solenoid valve is a basic component of automation to control the fluid, which are widely applied both in the industry and in our daily life. Now and then, this small valve encounters some problems, which further affects the normal operation of the whole equipment. So, it would be better to learn some common problems of solenoid valve and know how to troubleshoot them. Here are some common problems occurring in the solenoid valves as well as their possible causes and troubleshooting for your reference.

Problems	Causes	Troubleshooting
Solenoid valve doesn’t work after energized.	Whether the power supply of solenoid valve is connected well.	Reconnect the wires and the connector assembly.
	Whether the power voltage is within the working range.	Regulate it to the right scope.
	Whether the coil desoldering.	Re-welding it.
	The coil is short circuit.	Change it.
	Whether the working pressure differential is proper	Adjust the pressure differential or replace if necessary.
	The fluid temperature is too high.	Update an appropriate solenoid valve.
	Extraneous matters make the valve blocked.	Clean out the valve; if the seal is broken, change it.
	The liquid is too sticky, the use of solenoid valve is too frequent and the service life is up.	Change a right one.
The solenoid valve cannot be closed.	The seal has been damaged.	Change the seals.
	The fluid temperature or viscosity is too high.	Replace the solenoid valve with a suitable one.
	Some impurities have entered into the valve.	Clean out.
	The service life of the spring is up or the spring has deformed.	Change it.
	The orifice or port of solenoid valve is blocked.	Clean out the valve in time.
	The working frequency is too high or the service life is up.	Update the solenoid valve.
There is a leakage inside the solenoid valve.	Whether the sealing is broken, or whether the spring is in bad condition.	Replace.
There is a leakage outside.	The connection is loose or the seal has been damaged.	Tighten the screw or exchange the seal.
There is a noise after the solenoid valve power on.	The nut is loose.	Tighten it.
	The voltage fluctuation is not within the allowable range.	Regulate the voltage properly.
	The surface of plunger has extraneous matters or it is uneven	Clean out or change it.

*The above information just give you some basic guide. Actually, aiming at the specific problem, it is also necessary to take the worksite, usage, environment and other factors into consideration. Therefore, for more information, please feel free to contact us.

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