Danfoss Error 1027 (Browser Reliable)

| Measurement (drive disconnected from mains, brake resistor disconnected) | Healthy Reading | Shorted IGBT Reading | |--------------------------------------------------------------------------|----------------|----------------------| | Between and BR- (some drives) or DC+ and BR terminal | Diode drop 0.3–0.8V one way, OL reverse | 0.0V or very low both ways | | Between BR- and DC- (common config) | Same as above | Short both ways |

The drive cannot send data via the CAN bus. danfoss error 1027

If a standard reset does not clear the error, you may need to perform a Manual Initialization to return the drive to factory default settings. This will erase all user-programmed parameters. MyDrive® Assistant Power off the drive. Press and hold the [Main Menu] keys simultaneously. | Measurement (drive disconnected from mains, brake resistor

Specifically, often indicates a CAN telegram failure —the drive is attempting to send a communication signal but failing, which can suggest a deeper hardware error within the control board or internal communication bus. MyDrive® Assistant Power off the drive

Because Error 1027 is frequently flagged as a in Danfoss technical documentation, you may eventually need to replace a component. If the steps above don't work, your best bet is to contact Danfoss Technical Support or your local supplier to discuss a control card replacement.