E440 - Heating restricted due to high outdoor temperature

What does E440 mean?

The heating operation is restricted because the outdoor temperature is above the maximum allowed temperature for heating, a product protection specification.

• Outdoor temperature over specified high value for heating.

Click steps to track your progress.

1. 1

   Check the current outdoor temperature.

2. 2

   Verify the temperature range specified in the product manual for heating operation.

3. 3

   This is a product specification, not a fault; ensure operating within the recommended temperature scope.