Alarm 272 — Warm outdoor air (heating)

What does Alarm 272 mean?

The system detects that the outdoor air temperature is too warm for efficient or necessary heating operation. This may cause the system to limit or stop heating to optimize performance or prevent overheating.

• Outdoor air temperature rising above the maximum operating threshold for heating.
• Outdoor temperature sensor malfunction or inaccurate reading.
• Incorrect system settings for heating mode in warm ambient conditions.

Click steps to track your progress.

1. 1

   Check the actual outdoor temperature to confirm if it is unusually warm for heating operation.

2. 2

   Review the system settings for heating 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 v9542R2 or later for improved alarm handling.