AskManual.ai
⚠
warning Honeywell

Error Code Code 2

Loss of AC power — the system has lost its primary AC power source.

? What Causes This

Power outage, disconnected power transformer, or circuit breaker tripped.

✓ How to Fix It

  1. Check that the power transformer is plugged into a working electrical outlet.
  2. Verify the circuit breaker has not tripped.
  3. Restore AC power to the system.
  4. The backup battery will maintain system operation until AC power is restored.

This error code appears in:

Honeywell Vista-20P Security Panel