!
error Della
Error Code E7
Outdoor ambient temperature sensor fault — malfunction in the outdoor temperature sensing mechanism.
? What Causes This
Faulty wiring or broken sensor on the outdoor unit affecting readings.
✓ How to Fix It
Contact professional service, as any repairs on this module would require specialized knowledge and equipment.
Source: page 40 of the official manual
From the manual
This error code appears in:
Della 048 MS T1159k