DoorKing 1175 Manuals & Support

Find which part has the problem first: the operator, the loop system or the keying devices. The input LEDs on the control board show which inputs are active.

Operator will not run, power LED off

• Check that power to the operator is on.
• Check for 115 VAC at terminals 18 and 19. If the voltage is good, check the terminal strip or replace the circuit board.
• An overheated board transformer shuts the board down. Turn power off, let it cool for several minutes and test again.

Operator will not run, power LED on

• At least one monitored photo eye or edge must be connected in each entrapment area, with its UL 325 input switched on.
• Jumper terminals 6 and 14 for a moment. If the input LED does not light, check the terminal strip or replace the board.
• Test the motor directly as the manual shows. If it runs in one direction only, check the motor, motor capacitor and wiring.

Entrapment input LED on or blinking

• LED on: the photo eye or edge has a fault or its wiring is shorted.
• LED blinking: the device is not connected or its wiring is open.

Gate opens but will not close

• Any input LED that stays on holds the gate open. Disconnect keying devices one at a time until it goes off.
• An active photo eye, edge or loop detector also holds the gate open.
• The operator may be in a soft shutdown. Activate any keying device to clear it.
• For automatic close, check that the close timer is enabled.

Alarm sounding or chirping

• This is a hard shutdown. The alarm sounds for 5 minutes, then chirps every 5 seconds until the operator is reset.
• Check the whole gate area for an obstruction or damage first, then press the reset button or turn power off and back on.
• If the cause cannot be found and fixed, leave the operator off until a technician checks it.