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. | Stop using the charger and contact us. A contactor fault needs an installer check; do not repeatedly reset it. |
| 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. | Stop using the charger and contact us. Do not open, close or screw down an electrical enclosure yourself. |
| 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. | If there is no damage, heat, smell or repeated tripping, switch the labelled charger isolator off and back on once, only if safe and familiar. If the fault persists, contact us. |
| All red ON | Meter offline | Internal energy-meter chip not responding. | Contact us to investigate the meter fault. Do not open the charger or repeatedly reset it. |
| Yellow for 1 second, then one red flash, repeating | DLB box offline | The charger cannot communicate with the DLB box. DLB is included in our package; this fault needs an installer check. | Pause charging and contact us. Do not open equipment or reseat internal cables; the installer checks the DLB connection. |
| Yellow for 1 second, then two red flashes, repeating | DLB current reading abnormal | Only relevant if you have the DLB box. The clamp sensor on your incoming supply isn’t reading correctly — it may be loose, unclipped, or on the wrong cable. | Pause charging and contact us to check the sensor. Do not open the fuseboard or adjust the clamp; do not assume it is safe to charge without working load management. |
| Light goes out completely | Leakage fault | The internal RCD has tripped. | Stop using the charger and contact us. Do not open the front cover or reset an internal RCD yourself; an installer must investigate the fault. |
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.