E440 — Heating Not Possible: Outdoor Temperature Exceeds 30°C

What does E440 mean?

This is not a product fault but a protection feature. The air conditioner will not operate in heating mode when the outdoor temperature is above 30°C to protect the unit and ensure efficient operation.

• Outdoor ambient temperature is too high for heating mode operation.

Click steps to track your progress.

1. 1

   Check the outdoor temperature.

2. 2

   If the outdoor temperature is above 30°C, the heating function is intentionally restricted for product protection.

3. 3

   Refer to your product manual for the specified operating temperature range for heating.

4. 4

   No action is required if the temperature is within the specified limit; the unit will not operate in heating under these conditions.