
Installation & Operation Manual
ECON actuator Fig. 7917EX, type ELSA50 – 260
www.eriks.com
Rev. 0 – April 10
th
, 2019
26
The capacitor is failed.
Possible problems
Solution
a. The environmental temperature did
exceed the withstandable temperature
range.
a. Please use the capacitor at a temperature
between -30°C to +70°C
(-22°F to +158°F )
Modulating Controller
The LED (LD5 - LD9) is flashing after the operating check is completed.
Solution
Refer to section 5.6
The actuator is running fully open/close but not modulating.
Possible problems
Solution
The signal input with a reversed polarity, it
means a signal failure.
Verify if the negative pole of signal input
connected to terminal #6 and the positive
pole connected to terminal #7.
Can not operate by modulating controller.
Possible problems
Solution
a. Potentiometer failed..
b. The sector gear of potentiometer
loosened.
c.
Input wrong signal type.
d. Modulating board failed.
a. Replace with a new potentiometer.
Remove the input signal wires and
operate the actuator to fully-closed. And
then recalibrate VR, please refer to
section 4.4.
b. Check if the input signal is correct,
please refer to section 5.3.
c.
Send back to factory for inspection.