9000-065-J-9-11
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7.3 Troubleshooting
Have a good VOM meter with Min/ Max test button to check voltages and continuity. A Meg-Ohm meter capable of checking up
to 500 meg-ohms of resistance is necessary to properly check the integrity of the ground loops. When a malfunction occurs,
isolate the problem to one of three areas: 1) the operator, 2) the loop system, 3) the keying devices.
Use caution when check-
ing high voltage areas: terminals 17 through 20, the motor capacitor and the motor.
Symptom
Possible Solution(s)
•
Check that power to the operator is turned ON.
•
Transformer may be overheated. Turn power off and allow board to cool for several minutes then
retest. Check for low 115 VAC power and low voltage shorts.
•
Check for 115 VAC at terminals 19 and 20. If voltage measures OK, check the terminal strip or
replace the circuit board.
Operator will not run.
Power LED is OFF.
•
Press motor reset button firmly.
•
Press “Push to Operate” button or momentarily jumper terminal 1 to terminal 2 (or 1 to 5). If the
input LED does not come ON, check the terminal strip or replace the circuit board. If LED does
come ON, proceed to next steps.
•
Check Motor:
Gate must be half way open before testing motor.
1.
Turn AC power OFF
and remove circuit board. Wire terminal 19 to terminal 18 with a 14 AWG
insulated jumper wire. Turn AC power
ON – CAUTION – HIGH VOLTAGE.
The motor should run,
turn
power
OFF
.
2.
With AC power still OFF
. Wire terminal 19 to terminal 17 with a 14 AWG insulated jumper wire.
Turn AC power
ON – CAUTION – HIGH VOLTAGE.
The motor should run in the opposite direction
as terminal 19 wired to 18, turn power
OFF
.
3.
If the motor does not run, or runs in only one direction, problem can be a bad motor, motor
capacitor, wire connections from the control board to the motor or a bad control board. If the
motor runs in both steps above, contunue troubleshooting control board and accessories.
Operator will not run.
Power LED is ON.
1
. Check the input indicator LEDs. They should only come ON when a keying device (card reader, push button, etc.) is
activated. If any of the input LEDs are ON continuously, this will cause the gate operator to hold open. Disconnect the
keying devices one at a time until the LED goes OFF.
2
. Check any external secondary entrapment protection devices. Any short or malfunction in these devices can cause
the gate operator to stop or to hold open.
3
. A malfunction in a loop or loop detector can cause the gate operator to hold open, or to not detect a vehicle when it is
present over the loop. The LEDs next to the loop detector ports on the operator circuit board will light only when the
loop has detected an object above it. If the LEDs stays on after the object has gone, then the loop detector has malfunc-
tioned. Pull the loop detector circuit boards from the loop ports on the operator circuit board. If the malfunction
persists, the problem is not with the loop system. For more information on trouble shooting loops and loop detectors,
refer to your loop detector instruction sheet and to the DoorKing Loop and Loop Detector Information Manual.
4
. Check to be sure that there are no shorted or open control wires from the keying devices to the gate operator. If a
keying device fails to open the gate, momentarily jumper across terminals 1 and 2 (or 1 and 5) on the gate operator
circuit board. If the gate operator starts, this indicates that a problem exist with the keying device and is not with the
gate operator.
5
. Check the high voltage supply. A voltage drop on the supply line (usually caused by using too small supply voltage
wires) will cause the operator to malfunction. Refer to the wire size chart in section 2.1 page 19.
Summary of Contents for 9000-080
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