Solenoid valve does not malfunction and troubleshooting methods

Solenoid valve failure will directly affect the switching valve and control valve action, a common fault with the solenoid valve does not move, should the investigation the following aspects:

(1) solenoid valve lug loose or thread off, electric solenoid valve shall be fastened thread.

(2) solenoid valve coil burned out, you can remove the solenoid valve wiring, measured with a multimeter, if open, the solenoid valve coil burned out.
Moisture causes the coil, magnetic flux leakage caused by bad insulation, causing the coil current is too large to burn, so to prevent flood water from entering the solenoid valve. In addition, the spring strong, reaction force is too large, too few coil turns, the suction can not make the coil burnt. Emergency treatment, can be manual button on the coil from the normal work of the "0" bit hit "1" bit, makes the valve open.

(3) solenoid valve stuck. Slide valve solenoid valve sleeve and spool with a small gap (less than 0.008mm), generally single assembly, when a mechanical impurities into or too little lubricant, it is easy to get stuck. Treatment can hold into the wire holes from the head to make it bounce. The fundamental solution is to remove the solenoid valve, remove the spool and spool cover, with CCI4 cleaning kit allows flexible movement in the valve spool. Demolition should pay attention to all parts of the assembly sequence and location of the external connection for re-assembly and wiring is correct, also check whether the plug hole injector oil mist, oil is sufficient.

(4) leak. Lack of air pressure can cause leakage, making difficult to force open and close the valve because the valve gasket damage or wear caused by sliding a few cavity channeling gas.

Switching system in dealing with the electromagnetic valve failure, should select the appropriate time, so that the solenoid valve in the loss of processing power, if handled in an endless gap switch, switching system can be suspended stride.