Step-by-step Hydraulic Valve Solenoid Troubleshooting

Hydraulic solenoid valves are a special type of valve that is specifically designed with a solenoid coating. As such, they control the flow of liquids in pipes. Common problems associated with solenoid valves include leakages, and coil issues among others.

The Configuration of a Hydraulic Solenoid Valve
The Configuration of a Hydraulic Solenoid Valve

Hydraulic solenoid valve problems and Troubleshooting

Leakage Problems

Valve leakage is a common problem among solenoid valves. It entails failure of the valves to effectively control the flow of liquids in pipes resulting in inefficiencies.

Main Causes

Leakage problems among hydraulic solenoid valves are attributed to various causes. Below are examples of causes of leakages among solenoid valves.

  • Foreign material accumulation in valves thus influences the valve’s efficiency and effectiveness
  • Rusted valves
  • Possible wear and tear of parts
  • Unsustainable pressure
  • Faulty valves
  • Electrical surge/incorrect current voltage

How to Diagnose

To effectively diagnose leakages in hydraulic solenoid valves, consider the following;

  • Critically inspect for breakages of valves and seals as well as other parts of the solenoid valve. The availability of broken parts of the valves is therefore a clear indication of valve leakages.


Mitigating leakages in hydraulic solenoid valves entails the following steps;

  • Regular assessment of the valves to ensure they are in good condition
  • Constant replacement of damaged parts to ensure effectiveness and efficiency of the solenoid valves
  • Conducting regular cleaning of hydraulic solenoid valves to remove foreign materials that might otherwise cause blockage


  • Effective installation.
  • Constant maintenance.

Coil Related Problems

This is a notable problem among hydraulic solenoid valves.  Such problems can be attributed to factors such as;

  • Improper voltage supply in the hydraulic solenoid system
  • Short-circuiting
  • Unfavorable temperatures
  • Faulty coil leading to slow coil armature

How to Diagnose

  • Inspect the efficiency of the coil armature. As such, if the coil armature’s speed does not match the normal coil armature speed, it is therefore a clear indication that the coil is faulty and needs urgent attention.


Measures for troubleshooting coil problems in hydraulic solenoid valves include;

  • Constant replacement of damaged coils and armatures
  • Regulate the operating temperatures to ensure the effective operation of hydraulic solenoid valves
  • Always choose hydraulic solenoid valves with specifications that match your needs
  • Avoid possible short-circuiting of the valve system
  • Inspect the power supply system and its compatibility with the solenoid valve system


It is recommended that after acquiring a hydraulic solenoid valve, one should critically examine the product manual before installation. Additionally, seeking clarifications is recommended in case the user needs additional information concerning their use.

Failure of the Valve to Fully Open

This is similarly a common problem among hydraulic solenoid valves. Various factors can result in such problems.

Main Causes

  • Bent/faulty tubes
  • Clogged diaphragm with foreign materials
  • Rust/Corrosion
  • Unclean armature/tube
  • Low differential pressure
  • Possible missing components in the valve

How to Diagnose

Diagnosis of this problem entails examining the extent to which the valve opens to allow the flow of liquids. As such, hydraulic solenoid valves may tend to be partially open thereby only allowing a small amount of liquids to go through. Such problems are common to solenoid valves.


  • Regular replacement of damaged valves
  • Effective cleaning of the diaphragm and possible replacement of the damaged parts
  • Fix the missing components of the solenoid valves
  • Choose solenoid valves with the required specifications
  • Regular cleaning and replacement of the valves

Failure of the Solenoid Valve to Close or Open

A notable problem affecting hydraulic solenoid valves is valve failure to open/close.

Main Causes

Various causes are attributed to valve failure in hydraulic solenoid valves leading to their failure to close/open. Such causes include;

  • Corrosion and rust
  • Over current/voltage
  • Unstable power supply
  • Irregular pressure
  • System blockage caused by foreign materials

How to Diagnose

Failure of the solenoid valve to open or close is easily detected by the user. The major cause of this problem is faulty/damaged solenoid parts such as coils


  • Always ensure that the diaphragm is clean and free from foreign materials
  • Regularly check the availability of each component in the solenoid valve
  • Ensure that the electrical supply is sufficient
  • Ensure proper installation of the valve
  • Examine the voltage and electric current flowing through the solenoid valve system
  • Carefully examine the power supply system

Unwanted Valve Sounds

Hydraulic solenoid valves may also produce unwanted valve sounds during their operation. Such a problem should be addressed with immediate effect to avoid further problems.

Main Causes

  • Unequal pressure is exerted in the solenoid valves
  • Humming is commonly caused by water
  • Valve friction
  • The pressure difference in the valve chamber

How to Diagnose

Examination of sounds generated by hydraulic solenoid valves is important since it helps in the determination of the effectiveness of these valves. As such, in case the solenoid valves produce unwanted sounds during their closure or opening, this indicates their in-effectiveness.


  • Examine the pressure and valve specifications before choosing a particular hydraulic solenoid valve
  • Using a T-piece pipe since it minimizes the sounds produced
  • Ensure effective installation of the solenoid valve to achieve optimum results
  • Re-designing of the pipe to make it bigger to reduce valve pressure exerted at the inlet
  • Employing the use of a rectifier to minimize sounds produced by Ac. Common rectifiers include power-saving systems
  • Investigate the differential pressure


  • Constantly replace broken components
  • Regular inspection of the hydraulic solenoid valves
Steps for Troubleshooting of a Hydraulic Solenoid valve
Steps for Troubleshooting of a Hydraulic Solenoid Valve

Failure of the Valve to Fully Close

Main Causes

  • Clogging of components with dirt and other foreign materials
  • Rust and corrosion
  • Uncontrolled pressure in the valve chamber

How to Diagnose

Effective closure of valves in hydraulic solenoid valves can be ascertained through various ways. For instance, stagnation of liquids at specific points in the system can imply improper functioning of the valves specifically associated with their closure


  • Regular cleaning of components to avoid clogging
  • Ensure proper installation of the valve system
  • Examine the electric supply system


  • Regularly seek clarifications from companies and specialists whenever one is unsure of installation and other usage aspects.

Burnt Coil

Hydraulic solenoid valves commonly experience instances of burnt coil. This problem is equally significant and thus requires urgent attention.

Main Causes

  • Faulty armatures are caused by clogging of dirt and foreign materials in these parts.
  • Short-circuiting
  • Poor voltage


Troubleshooting the burnt coil problem entails a series of steps. These include;

  • Regular inspection of the hydraulic solenoid specifications such as voltage and installation
  • Ensuring proper installation
  • Avoid short-circuiting through inspection of solenoid wiring that could otherwise result in short-circuiting
  • Regular cleaning of components and parts
  • Choose high-temperature resistant valves


In a nutshell, hydraulic solenoid valves are prone to a series of problems such as those explained above that occur during their operation. As such, these problems should be timely fixed to ensure their effectiveness and efficiency.

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