!!
critical Della
Error Code EE
Outdoor PCB EEPROM fault — memory chip issue in outdoor PCB or controller board corruption.
? What Causes This
Faulty data storage within the microcontroller’s non-volatile memory region.
✓ How to Fix It
Replacement through professional service is necessary to clear and rewrite system parameters safely.
Source: page 40 of the official manual
From the manual
This error code appears in:
Della 048 MS T1159k