Centurion D5 Evo not closing: LED flashes and beep codes explained

What the status LED means

The D5-Evo user guide lists these signals for the gate status indicator. The Status LED on the controller can be read the same way:

• Off: gate is closed
• On: gate is partly or fully open
• Slow flash: opening. Fast flash: closing
• 1 flash every 2 seconds: courtesy (pillar) light is on
• 2 flashes every 2 seconds: no mains power
• 3 flashes every 2 seconds: battery voltage low
• 4 flashes every 2 seconds: multiple collisions. The controller shuts down after repeated obstructions (default four) until it gets a valid trigger

What the beeps mean

• Three beeps every 2 seconds (for 30 s): battery low
• Five beeps periodically (for 30 s): safety beam failure (with beam test enabled)
• Beeping until cleared: multiple collisions
• Continuous tone: ambush alarm, beams broken for a long time (if the feature is set)

Gate opens but will not close: work through this order

1. Safety beams

This is the most common cause. If the closing beams are blocked, misaligned or faulty, the gate will not close from fully open. Look for something in the beam path: a car, a bin, grass or a spider web. Clean the lenses and check that both beam units point at each other. Centurion's diagnostics guide says to check the Safe CLS (safety close) LED on the controller. If it is out or flickering, the beam circuit is interrupted.

2. Battery and mains

Two flashes means no mains. Check the plug and the pillar isolator, and check whether there is a power cut. Three flashes or three beeps means the battery is low. Centurion says the battery should not drop below about 11 V DC under load, and to check the terminals for corrosion. Load-shedding wears batteries out. Most 12 V gate batteries need replacing every few years.

3. Obstruction or a stiff gate

Four flashes means the motor kept hitting resistance. Check for stones in the track, a worn wheel, a bent rack, rack teeth pressing down on the pinion, or a gate leaning on its guide rollers. Release the motor with its key and slide the gate by hand. It should run freely with no tight spots. If it drags, see fixing a sagging or off-track sliding gate.

4. Limits, holiday lockout or settings

If limits were lost after a battery change, or settings were changed, the gate may stop short or behave oddly. Setting limits and changing menus is a job for an installer, using the procedure in the manual.

When to call a technician

• The LED shows no fault, but the gate still will not move
• A burnt smell, water inside the motor, or a damaged controller or DOSS sensor
• The gate is off track or a wheel or rack is broken
• The beams are aligned and clean but still show a fault

We repair and retrofit existing motor setups across Greater Gaborone. See gate motor repairs and gate motors & automation.

Sources

• Centurion Systems — D5-Evo, D10 & D10 Turbo user guide
• Centurion Systems — Diagnostics made easy