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4.3 Troubleshooting Continued
Symptom Possible Solution(s)
Gate closes and
opens continuously.
Gate starts to close,
then reverses to
open.
Alarm sounds for 5
minutes and then
beeps once every 5
seconds. Operator
will not run.
• Disconnect the gate from the operator and check that the gate operates freely without any binding.
• Check the loop detector LED’s and input LED’s. Any that flash ON will cause the gate to reverse.
• Continue troubleshooting or replace the circuit board.
• Operator is in a “hard shutdown” condition. Reset switch must be activated to return operator to
normal operation, see Hard Shutdown Section 3.5, page 27.
• Check for any input or loop detector LED’s that are ON.
• Check that the operator is running in the proper direction (see “gate closes but will not open”).
• Check the SELF TEST jumper, see page 18.
Gate closes but
will not open.
• Operator may be in a “soft shutdown.” Check input LEDs. If any are ON, momentarily disconnect,
then re-connect the wire going to the respective terminal. Operator should open.
• Check to be sure that the operator is running in the proper direction. Turn power OFF, and then back
ON. Activate a keying device. Operator should run in the open direction. If operator runs in the
close direction, turn power OFF and change direction switch SW 1, switches 1 and/or 2. Go to
above section if operator now opens but will not close.
• Be sure that the respective LED on the control board lights when the keying device connected to the
respective terminal is activated. If LED does not light, momentarily place a jumper wire from
terminal 1 to the input terminal being checked. If LED lights and gate opens, problem is with the
keying device. If LED does not light, replace control board.
• Check motor as described above “Operator(s) will not run. Power LED is ON”.
Operator has
intermittent
functionality
problems that vary.
• The 24 V POS terminal 250 mA power has been exceeded.
Check total amp draw of connected device(s).
• Check the input LEDs. Any ON will hold the gate open and indicates a problem with a keying device.
• Check the secondary safety devices. Any activated will hold the gate open and indicates a problem
with the safety device.
• Check the loop detectors. Any activated can hold the gate open and indicates a problem with the
loop detector or ground loop.
• Operator may be in a “soft shutdown.” Activate any keying device to determine if operator returns
to normal operation.
• If automatic close is desired, be sure SW 1, switch 4 is ON.
Gate opens but
will not close.
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