Danfoss Error 1027

fault. This means the inverter has detected an issue with the internal DC power stage, often triggered by improper string connections or internal hardware damage. Solis Inverters Troubleshooting Steps Perform a Hard Reset Disconnect all AC and DC power from the unit. Wait at least 5–10 minutes for the internal capacitors to fully discharge.

: Defective EEPROM data on either the power card or the control card. danfoss error 1027

Turn off the main AC power to the drive. Wait for the display to go completely blank (discharging the capacitors) before restoring power. Wait at least 5–10 minutes for the internal

Danfoss Error Code 1027: Technical Fault Report In Danfoss VLT drives (such as the Error Code 1027 typically indicates a specific category of Internal Fault Wait for the display to go completely blank

Disconnect the mains supply and wait for the display to turn off completely.

Error 1027 is rarely a "loose wire" fix. If a power cycle doesn't clear it, it usually requires a component-level repair or a board replacement.