Alarm 580 — Cold outdoor air (cooling)

What does Alarm 580 mean?

The system detects that the outdoor air temperature is too low for efficient or safe cooling operation. This may cause the system to limit or stop cooling to protect components or optimize performance.

• Outdoor air temperature falling below the minimum operating threshold for cooling.
• Outdoor temperature sensor (BT28) malfunction or inaccurate reading.
• Incorrect system settings for cooling mode in cold ambient conditions.

Click steps to track your progress.

1. 1

   Check the actual outdoor temperature to confirm if it is unusually low.

2. 2

   Review the system settings for cooling operation, specifically outdoor temperature limits.

3. 3

   Inspect the outdoor temperature sensor for any obstructions or malfunctions.

4. 4

   Update the NIBE SMO 20 firmware to version v9586R2 or later for improved alarm handling.