Critical Fault - SF0-SF5

Jake Bentancourt

Modified on: Sat, 8 Aug, 2026 at 6:43 AM

Display - Pre-Charge Timeout

Description- Internal non-recoverable fault in main controller(DSP uP) or the Control Board.

SF0: ReservedSF1: Invalid State Fault

SF2: Reserved

SF3: Software Incompatible

SF4: NVRAM Fault

SF5: Reserved

Resolution:

1. Reset Fault on HMI operation menu

2. Disable Inverter completely), then cycle the control-power.! Warning of AC Arc-flash if/when CB2 is cycled!

3. Contact Eaton