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critical Della
Error Code E9
Outdoor IPM module fault — inverter power module malfunctioning.
? What Causes This
Component failures within the outdoor unit's variable speed motor control or other related electronic parts breakdowns leading to improper functioning of components responsible for managing voltage changes between indoor and outdoor compressor.
✓ How to Fix It
Service technician should replace faulty components to regain normal system operation.
Source: page 40 of the official manual
From the manual
This error code appears in:
Della 048 MS T1159k