Instructions for SW400DC
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23
6.2 Troubleshooting
Problems
Possible Reasons
Solutions
The gate cannot open or
close normally, and
Display does not light.
1.The power is off.
2.Fuse is burned.
3.Control board power wiring
with problem.
1.Switch on the power supply.
2.Check the fuse, change the fuse
if burnt.
3.Re wiring according to
instructions.
The gate can open but
cannot close.
1.Photocell wiring with
problem.
2.Photocell mounting with
problem.
3.Photocell is blocked by
objects.
4.Sensitivity of obstacle is too
high.
1.If not connect photocell, please
make sure that the 5 and 6, 5 and
7 short circuit; if connect infrared
sensor, please make sure the
wiring is correct and the photocell is
N.C.
2.Make sure that the photocell
mounting position can be mutually
aligned.
3.Remove the obstacle.
4.Reduce the sensitivity of
obstacle.
Remote control doesn’t
work.
1.Battery level of the remote
control is low.
2.Remote control learning is
not completed.
1.Change the remote control
battery.
2.Re-conduct remote control
learning.
Press OPEN, CLOSE
button, the gate is not
moving, motor has noise.
Gate moving is not smoothly.
According to the actual situation to
adjust the motor or the gate.
Leakage switch tripped.
Power supply line short circuit
or motor line short circuit.
Check wiring.
Remote control working
distance is too short.
Signal is blocked.
Connect external receiver antenna,
1.5 meters above ground.
The gate moves to the
middle position to stop or
reverse.
1.Motor output force is not
enough.
2.Sensitivity of obstacle is too
high.
3.Gate meets obstacle.
1.Check whether the transformer
power is normal, if not, change the
transformer.
2.Adjust the TR2.
3.Remove the obstacle.
