Danfoss Error 1027 | Easy & Reliable
Danfoss Error 1027 is a communication fault indicating that a component on the internal network has stopped responding to the main controller. It most commonly occurs in commercial refrigeration controllers, such as the Danfoss AK-CC55 multi-coil case controllers, when an extension module or a remote display loses connection.
Thus, Error 1027 isn't just a warning — it forces a predetermined safety or fallback state.
Check motor cable shielding and inspect power card components for burning. Technical Support and Next Steps
Understanding and Troubleshooting Danfoss Error 1027: A Comprehensive Guide
Follow these steps sequentially to isolate, troubleshoot, and fix the underlying issue behind a Danfoss Error 1027 condition. 1. Perform a Full Hard Power Cycle danfoss error 1027
In industrial automation, Danfoss VLT drives rely on precise, high-speed information exchange between the control card, power card, and option modules. Error 1027 specifically falls into the internal hardware diagnostic bracket (typically covering codes 1024 to 1279).
According to technical documentation for specific Danfoss VLT series, particularly those dealing with complex control systems (e.g., IBA Lift Documentation ), , specifically that a CAN telegram cannot be sent .
He traced the sensor wires to the evaporator coils. The insulation was intact, the connections clean. Then he saw it: a tiny, almost invisible scorch mark near the compressor relay. He touched it with a gloved finger. Still warm.
Follow this systematic guide to isolate and resolve Error 1027 safely. Step 1: Perform a Safety Shutdown Danfoss Error 1027 is a communication fault indicating
Force local control (). Does Error 1027 disappear? If yes, the drive itself is fine – your fieldbus is the problem.
If a terminal is set for this function but is not receiving a 24V signal, the drive may trip. Ensure a jumper exists between terminal 12 (24V DC) and the programmed input. Check DC String Connections (Solar Inverters) MC4 connectors for loose connections or poor crimping.
Restore power to the drive without the motor connected and press the [Reset] key.
Release the keys after 5 seconds. The drive will now boot into default factory programming. 🔧 Hardware Repair and Resolution Strategies Check motor cable shielding and inspect power card
When this critical internal error trips, the VFD drops output voltage, causing the motor to coast to a complete stop to protect its components. Resolving this issue requires a structured diagnostic approach to pinpoint whether the fault is transient, environmental, or an outright control card failure. What Causes Danfoss Error 1027?
After conducting a thorough search, I found that the Danfoss error code 1027 is related to a specific issue with Danfoss VLT (Variable Frequency Drive) products. Here's a detailed analysis:
Confirm that optional fieldbus communication cards are seated securely in their dedicated slots. 3. Check for Environmental and EMI Factors
Disclaimer: This document is for informational purposes only. Always refer to the specific Danfoss VLT Operating Instructions (MG.33.BX.XX) relevant to your specific firmware version for authoritative technical data.
Locate the option card (left side of the control card on VLT units). Interpret LEDs:
