: You can attempt to clear the fault by pressing the [Reset] key on the LCP (Local Control Panel) .
Periodically back up all drive data by copying parameters directly onto the LCP via Parameter 0-50. This ensures quick configuration swap-outs if an internal control card fails and requires replacement.
Ensure that control wires are shielded, properly grounded, and kept separate from high-voltage motor cables. 4. Review Parameter Settings
The internal CAN transceiver on the control card is damaged. The control board must be replaced by a certified Danfoss Service Partner . danfoss error 1027
A 15-story office building. The primary chilled water pump (Danfoss VLT® HVAC Drive, 75 kW) triggers Alarm 1027 three times per night, stopping the pump and raising return water temperature to 14°C.
Turn off the main AC power to the drive. Wait for the display to go completely blank (discharging the capacitors) before restoring power.
Error codes are a vital diagnostic tool, and each one is categorized to help the user pinpoint the location and nature of a fault. To understand Error 1027, it’s crucial to look at its context within Danfoss's error code architecture. : You can attempt to clear the fault
If your Danfoss drive is displaying "1027," it indicates a hardware or firmware failure related to communication. Potential causes include:
Before replacing components, follow these systematic troubleshooting steps to isolate the root cause.
is a specialized internal hardware or communication fault typically tied to a critical internal sub-code within a broad Alarm 38 (Internal Error) event . It signals that an internal sub-system—most commonly the internal CAN (Controller Area Network) serial communication bus or memory register—is unable to safely transmit telegram data across the internal circuit boards. Ensure that control wires are shielded, properly grounded,
In most Danfoss VLT documentation, such as the IBA Lift technical guide, Error 1027 is classified as a or a hardware interface fault . Specifically:
The control card is the "brain" of the drive. If it has a defect—such as a damaged capacitor, a faulty voltage regulator, or a corrupted EEPROM—it can generate spurious signals or fail to function correctly, leading to an internal communication breakdown and triggering error 1027.