In Danfoss systems, typically indicates a CAN telegram communication failure .
From the PLC or network scanner:
If you continue to see the error, the drive requires a service check to replace the faulty hardware. Are you seeing error 1027 on a specific model (e.g., Go to product viewer dialog for this item. Go to product viewer dialog for this item.
This article provides a deep technical dive into Danfoss Error 1027. We will cover what it means, its common causes, step-by-step diagnostic procedures, and both field-level and long-term solutions.
Because Error 1027 indicates an internal hardware fault, the primary recommended solution is to contact your local Danfoss supplier or an authorized service center. However, before you make that call, there are a few preliminary steps you can take to ensure the error is not intermittent or a result of another issue: danfoss error 1027
Wait at least for the internal DC bus capacitors to fully discharge.
Wait at least for the internal DC bus capacitors to discharge fully to safe voltage thresholds. Remove the front protective cover.
As with many VFD faults, a hard reset might clear a temporary hiccup. Turn off the main power to the VFD.
Since this is an internal fault, troubleshooting involves isolating the hardware components. 1. Initial Power Cycle (Reset) In Danfoss systems, typically indicates a CAN telegram
: High electromagnetic interference (EMI) interrupting internal digital signaling.
Elias followed the standard protocol for a "silent" drive:
: Disconnect the motor cables and attempt to power up the drive alone to see if the internal error clears. Check Control Wiring
Here’s an interesting story about “Danfoss error 1027.” Go to product viewer dialog for this item
When Error 1027 is triggered, the drive initiates an immediate , dropping output voltage to zero and causing the attached motor to coast to an immediate stop to safeguard internal circuitry. Anatomy of Error 1027: Root Causes
Contact your local Danfoss sales or service office for diagnosis and repair by certified service partners. You can also try these official support channels:
: If the error persists, a Manual Initialization to default settings may be necessary, though this will erase custom parameter settings.