Subscribe to us and get update information from COVNA

Description of common faults of motorized valve

Blog,Valves Study | Mar.18.2022


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.

Contact us

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


--- END ---

go to top