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The reasons include damp coil, poor insulation and magnetic flux leakage, resulting in excessive coil current and burn out. The solenoid valve is expensive, so it is necessary to prevent rainwater from entering the solenoid valve. In addition, if the spring is too hard, the reaction force is too large, the number of turns of the coil is too small, and the suction force is not enough, the coil déanfaidh sé {. a dhó amach
