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Mighty Mule 352
39
Audible/Buzzer/Alarm Feedback:
1. 1 beep with 2 seconds off:
Limit switch error: Limit switch’s normally open and normally close inputs both open or both shorted.
Circuit board is indicating faulty limit switch inside the operator. The alarm will automatically shut off in
4 seconds after the problem is corrected. Call Tech Support.
2. 5 beeps with 2 seconds off:
Low battery condition detected:
- Check battery voltage to ensure you have 12.5 to 13.5 Vdc
- Check transformer output to ensure you have 18-22 Vac
- Check charging circuit with transformer or solar panel connected to ensure battery is being charged to
13.8 to 14.8 vDC. Battery may be charged with a trickle charger at 12Vdc 2 amps for 3 to 4 hours but
be sure to disconnect it from the system.
3. 1 beep when attempt to run the unit:
- Blown fuse
- Dead cell or extremely low battery condition.
- Bad connection from battery to circuit board.
4. Alarm continuously beeps (remote does not operate unit AND not at either limits):
- Two consecutive obstructions have been detected without reaching the limit. Alarm
will automatically shut off after 5 minutes. ‘Power-cycle’ the unit will also shut off the alarm.
- The battery may be extremely low.
5. Learn Remote: (MASTER ARM ONLY)
When a new code is learned from the remote the alarm will sound. Release the ‘LEARN REMOTE’ button
will turn the alarm off. See "Setting Your Personal Transmitter Code" section on page 30.
6. Power-Cycle:
The alarm will beep for 1 second upon power up to indicate the opener is ready to operate.
Visual/LEDs Feedback:
1. RF LED (LED2): (MASTER ARM ONLY)
Blinking when there is 318 MHz signal is received. This LED is typically off when the receiver is connected
and no 318 MHz signal is presented.
If no light:
a. Check receiver connection on the control board
b. Replace the battery in the remote.
c. Relocate antenna
d. Re-learn the remote
Visual and Audible Diagnostic Indicators
If your gate opener does not function properly after it is installed, use this guide or use the online
troubleshooter at http://support.gtoinc.com/support/troubleshooter.aspx before calling the
GTO Service Department.
• On all gates weighing 250 lb. or more, routinely grease the ball bearing hinges at least 4 times a year;
more frequently if the gates are in a coastal area.
• Clean the push-pull tube with a soft, dry cloth and apply silicone spray to it at least once a month.
• While oxidation is a normal part of weathering of equipment that is exposed to the elements, we
recommend you apply silicone spray the front and rear mounts to minimize this effect.