LD303 Blinking - Heartbeat Signal Lost

What does LD303 Blinking mean?

A blinking LD303 LED on the Carrier board suggests that the heartbeat signal, crucial for system operation, is not being transmitted or received correctly.

• System instability
• Component failure
• Software issue interrupting heartbeat

Click steps to track your progress.

1. 1

   Restart the charger by disconnecting and reconnecting power at the circuit breaker.

2. 2

   Ensure the charger is running the latest firmware version.

3. 3

   Check for any external factors that might be causing system stress.

4. 4

   If blinking continues, there might be an internal hardware defect. Contact support.