Sun Yeh Electrical M Series, Operation Manual, Page: 70 / 75

【M Series】Multi-turn Electric Valve Actuator
67
2021.06
10 Troubleshooting

Troubleshooting for Fault codes of the alarm log are listed as below table.
Code Warring Message
Possible Problems Solution
03
Motor
OH-SpeedLimit-
Motor overheating
(Motor runs at the re-
duced speed)
a. The temperature inside
the motor is higher than
the setting value and the
motor will run at the re-
duced speed to avoid
overheating.
b. The temperature setting
of “Motor Tem Warn-
ing” is too low.
c. The duty cycle exceeded
the rating or torque is
overload.
a. Confirm if the torque of
the valve suits for the
actuator.
b. Confirm if the temp.
setting value not too
low.
c. Motor stops running
until it cools down.
04
MotorOverheat(Stop)
Motor overheating
(Motor stops running)
a. The temperature inside
the motor is higher than
135°C (275
℉
) and stops
running.
b. The duty cycle exceeded
the rating or torque is
overload.
a. Confirm if the torque of
the valve suits for the
actuator.
b. Motor stops running un-
til it cools down.
05
Driver Overheat
Power module over-
heating.
The duty cycle exceeded the
rating or torque is overload. Confirm if the torque of the
valve suits for the actuator.
06
Battery Voltage Low
Battery Low
a. Battery capacity is low.
(Lithjum battery less than
2 to 2.5V and alkaline
battery less than 3 to
3.7V).
b. The ambient temperature
is over the rated tempera-
ture of the battery.
a. Replace a new battery.
b. Confirm the ambient
temperature and change
to a suitable battery.
07
No Battery
Battery is not installed
a. Incorrect battery installa-
tion.
b. Low battery power.
(Both lithjum battery and
alkaline battery less than
2V).
a. Re-install the battery.
b. Replace new battery.