Instructions for SL500DC/SL800DC
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48
Troubleshooting
Any troubleshooting work below done to the motor must be completed by a licensed
electrician and only whilst the power is off and the motor is unplugged!
Problem
Possible Reason
Solution
The gate cannot open or
close normally, indicator
light doesn’t on.
1. The power supply is
disconnected.
2. Fuse is blown.
3. Control board X2 terminal
wrongly wired.
1. Connect the power supply.
2. Check the fuse (FU) and replace
if blown.
3. Re-wiring according to this user
manual.
The gate can only open,
can’t close.
1. Photocell wrongly wired.
2. Photocell wrongly
installed.
3. Photocell is blocked by
objects.
4. Sensitivity of meeting
obstacle is too high.
1. If not connect photocell, please
ensure the infrared terminal and GND
terminal has a jumper wire; if connect
photocell, please ensure the wiring is
correct and the photocell type is N.C.
2. Ensure 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 is too low.
2. Remote control not
paired.
1. Change the battery.
2. Pair the remote control to the gate
opener.
Press OPEN, CLOSE
button, the gate is not
moving, motor has
noise.
1. Gate moving is not
smoothly.
2. Hall sensor damaged.
1. Adjust the motor or gate according
to the actual situation.
2. Replace the hall sensor.
Arrived at open or closed
limit switch, but motor
didn’t stop.
1. Magnetic limit switch
damaged.
2. Polarities of the two limit
switch stops are opposite.
3. Hall sensor part
damaged.
1. Change the magnetic limit switch.
2. Switch over the two limit switch
stops.
3. Change the hall sensor part.
Leakage switch tripped.
Power supply wires short
circuit or motor wires short
circuit.
Check wiring.
