Control Concepts provides repair and maintenance services for Danfoss motor control products, helping ensure reliable operation, improved efficiency, and reduced downtime. Whether you need diagnostics, repair, or preventive maintenance, our team supports industrial, commercial, and HVAC applications.
Who Is Danfoss?
Danfoss is a global manufacturer of AC drive technology, motion control, and automation solutions used across industrial, commercial, and HVAC systems. Danfoss products are known for energy efficiency, advanced control capabilities, and long-term reliability. Danfoss’s drive portfolio includes VLT®, VACON®, iC7, iC2, and legacy drive lines. Danfoss states that Vacon became part of the Danfoss Group effective December 1, 2014.
Danfoss Drives We Service
Control Concepts services and supports a wide range of Danfoss motor control products, including both current production and legacy equipment.
We service:
- AC drives
- Industry-specific AC drives
- Machinery AC drives
- Soft starters
- Control boards and industrial electronics
Danfoss does not manufacture DC drives. Legacy DC drive products associated with former Danfoss lines may exist under other brands and are not serviced as Danfoss equipment.
If you don’t see your specific Danfoss product listed here, contact us to discuss service options.
Communication Protocols & System Integration
Danfoss AC drives are designed to integrate with building automation systems, PLC platforms, and industrial control networks using standard communication protocols.
HVAC Communication Protocols
Industrial Communication Protocols
Danfoss drives are commonly used in applications requiring accurate control, consistent output, and reduced energy consumption.
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PROFIBUS
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PROFIBUS DP
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PROFINET
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CANopen
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DeviceNet
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EtherNet/IP
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EtherCAT
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POWERLINK
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Modbus
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Modbus TCP
These communication options allow Danfoss drives to integrate reliably into both building management systems and complex industrial control architectures.
Energy Efficiency and Control Features
Danfoss AC drives are engineered to improve efficiency and system reliability. In HVAC and industrial environments, these drives continuously adjust operating conditions based on demand, helping reduce energy use and mechanical wear.
Many models include features such as:
- Built-in PID controllers for independent process control
- Sleep Mode functions that shut motors down during no-demand conditions
- Adaptive control algorithms that optimize performance across varying loads
Control Concepts provides 24/7 service and support on Danfoss products.
Common Danfoss Drive Issues
Some common Danfoss drive issues we address include:
- Drive does not run the motor
- Blown fuses or tripped breakers
- Loose or damaged connections
- Non-functional cooling fans
- Software or programming problems
- Circuit board failures
The Control Concepts Repair Process
Inspection
We inspect the drive, control boards, terminals, and power connections for damage caused by heat cycling, vibration, contamination, or improper torque practices.
Electrical Testing
We perform diode and IGBT testing on input and output power sections, along with control circuit checks, before applying power.
Controlled Power-Up
The unit is powered up gradually while monitoring voltage, current draw, and output frequency until rated input voltage is reached.
Functional Testing
We back up existing parameters and test the drive through basic jog and operational functions, verifying output, motor rotation, and communication performance.
Final Verification
Each Danfoss drive or electronic component is fully tested to confirm proper operation before returning it to service.
Preventive Maintenance Recommendations
To reduce failures and extend equipment life, we recommend:
Keeping drives and control equipment free of dust and debris
Dust buildup can trap heat and interfere with cooling and internal components.
Ensuring proper ventilation
Adequate airflow helps prevent overheating and supports reliable drive operation.
Keeping equipment dry and protected from moisture
Moisture can damage electrical components and lead to shorts, corrosion, or premature failure.
Inspecting terminals and connections regularly
Routine checks can help identify loose or heat-damaged connections before they cause downtime.
Scheduling periodic testing and inspection
Regular inspection of power sections, wiring, and operating condition can help catch problems early and reduce unexpected failures.
Preventive maintenance plays a key role in reducing unplanned downtime and extending equipment life.
24/7 Danfoss Drive Repair & Maintenance
Control Concepts provides 24/7 Danfoss drive repair and preventive maintenance services to help reduce downtime and extend equipment life.
If you need Danfoss drive repair, diagnostics, or maintenance support, contact Control Concepts today.
