If something looks wrong, the LED ring and the icon on the LCD will tell you what's happening. Most issues are recoverable in under a minute.
Most transient faults clear with a power cycle. If the same red light comes back, look it up in the table below.
| LED / icon | Means | Why | What to try |
|---|---|---|---|
| Solid red | Internal contactor failure | A contactor inside the charger has welded or stuck. | Power off at the fuseboard for 30 seconds and try again. If it persists, contact us — we’ll handle the warranty claim. |
| Solid yellow | Emergency stop pressed | The red emergency button on the side is engaged. | Twist the red button clockwise until it pops back out. Then unplug and replug your car. |
| Solid red (with ground icon) | Earthing not detected | The charger can’t verify the earth connection — typically a wiring issue. | Don’t bypass — contact us. Charging without good earthing is unsafe. |
| Solid red (with U> icon) | Over-voltage | Your supply voltage is above the safe range. | Usually a transient grid issue. If it persists, log it and contact us — we may need to involve ESB Networks. |
| Solid red (with U< icon) | Under-voltage | Your supply voltage has dropped below the safe range. | Often happens during heavy household load (electric shower + immersion + oven). Charge at a different time and see if it clears. |
| Solid red (with current icon) | Over-current | A short circuit may have occurred. | Stop using the charger and contact us — this needs a professional check. |
| Solid red (car icon) | CP signal abnormal | The handshake between charger and car isn’t completing — usually a connector seating issue. | Unplug, check the connector for water or debris, and replug firmly. Try a different car if available. |
| Solid red (open lid icon) | Cover open | The front cover has been opened. | Close the cover and screw it back down. If you didn’t open it, contact us. |
| Solid red (thermometer icon) | Over-temperature | The unit is too hot — direct sunlight, or a wiring issue at the terminal. | Pause charging for 30 minutes. If it keeps happening, contact us — the terminal screws may need re-torquing. |
| Yellow lights ON, three pulses | LED board offline | Internal cable to the LED ring has come loose. | Contact us — the cover needs to come off to reseat the cable. |
| Yellow flash, four times | RFID off-line | RFID reader can’t communicate with the main board. | Power-cycle at the fuseboard. If it persists, contact us. |
| All red ON | Meter offline | Internal energy-meter chip not responding. | Power-cycle at the fuseboard. If it persists, contact us — needs warranty service. |
| Yellow alternating with red | DLB box offline | The optional Dynamic Load Balance box has lost connection. | Only relevant if you have the DLB add-on. Check the cable between the DLB box and the charger. |
| Light goes out completely | Leakage fault | The internal RCD has tripped. | Power off at the fuseboard. Open the front cover, reset the internal RCD switch, close the cover, power back on. If it trips again, stop using the charger and contact us. |
If Z-BOX can't find the charger over Bluetooth or Wi-Fi, you can force it back to Bluetooth-only mode. Don't open the cover yourself — instead:
Email ev@volteire.ie with a photo. We'll respond within one business day and handle the warranty claim with the manufacturer if needed.