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Electric valves, as electrical devices, can malfunction for a number of reasons. Generally speaking, common problems are found on top of the actuator, caused by a number of reasons, such as incorrect installation, not tested well, environmental impact, etc. The following are some common fault solutions, according to the following instructions or can not be solved, you can contact us, we will have professional after-sales staff to help you solve the problem.
| Fault phenomenon | Possible reason | Solution |
| Motor does not start | Lacking of power supply | Connect the actuator to power supply |
| Electric: wire broken, wiring teminals lose | Repair the wire, tighten wirig terminals | |
| Supply voltage is wrong or below level | Check the voltage is correct or wrong | |
| Overheat protector activated (ambient temperature is too high, the valve is stuck) | Reduce ambient temperature, manually open/close the valve to see if it is working | |
| Limit switch disfunction | Replace the limit switch | |
| Capacitance doesn’t start or running | Replace the capacitance | |
| Opening & closing Indicator light doesn’t light | Indicator light is broken | Replace the indicator light |
| Limit switch disfunction | Replace the limit switch | |
| Adjusting of block disfunction | Readjustment | |
| Opening degree changing constantly | Signal source has interference signal | Check input signal |
| Voltage divider generated interference | Replace the potentiometer | |
| Voltage divider gear or opening gear loose | Tightening up the screws of gear |
Tags: Common faults of motorized valve
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