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Danfoss Tested & Verified Repair Services

ISO 9001:2015 Certified Quality

Our certified process ensures consistent quality and reliable repairs every time.

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2-Year Repair Warranty

We stand behind our repairs with an extensive 2-year warranty on parts and labor for your peace of mind.

Fast Turnaround Time

Our efficient process and large parts inventory help minimize your operational downtime.

Expert Component-Level Repair

We find and replace individual failed components, offering a more affordable and effective repair than full replacement.

Free, No-Obligation Quote

Send us your item for a free evaluation and receive a detailed repair quote with no commitment required.

Danfoss Repair Services by Roc Industrial LLC

Is your Danfoss equipment experiencing issues? Roc Industrial LLC provides comprehensive Danfoss repair services to get your operations back up and running quickly. We specialize in the repair of Danfoss products, including power supplies, variable frequency drives (VFDs), servo drives, and other industrial automation components. Our commitment is to provide fast, reliable, and expert repair solutions. Trust Roc Industrial LLC as your trusted partner for all your Danfoss repair needs. We offer free evaluations, warranty-backed repairs, and quick turnaround times to minimize downtime and maximize productivity.



About Danfoss

Danfoss is a global leader in providing innovative and energy-efficient solutions across various industries, including refrigeration, air conditioning, heating, power electronics, and mobile hydraulics. Renowned for their high-quality and durable products, Danfoss components are integral to numerous industrial applications worldwide. Their power supplies, variable frequency drives (VFDs), and servo drives are particularly well-regarded for their performance and reliability in demanding environments. Danfoss has built a strong reputation for engineering excellence and a commitment to sustainability, making them a preferred choice for businesses seeking dependable and efficient solutions.


Danfoss products are widely used in industries such as manufacturing, food and beverage, water and wastewater treatment, and renewable energy. Their advanced control systems and automation technologies help optimize processes, reduce energy consumption, and improve overall operational efficiency. Whether it's controlling the speed of a motor, regulating temperature in a refrigeration system, or managing hydraulic power in mobile equipment, Danfoss solutions play a critical role in ensuring smooth and reliable operation. Roc Industrial LLC understands the importance of these components and offers specialized repair services to keep your Danfoss equipment performing at its best.



Supported Models & Series

We repair a wide range of Danfoss models and series, including but not limited to:

  • Danfoss VLT' Series: VLT' AutomationDrive FC 302, VLT' HVAC Drive FC 102, VLT' AQUA Drive FC 202, VLT' Micro Drive FC 51

  • Danfoss VACON' Series: VACON' 100 FLOW, VACON' 20, VACON' NXP, VACON' 10

  • Danfoss Power Supplies: DLX Series, DP Series, and custom power solutions.

  • Danfoss Servo Drives: DSA Series, DSC Series, and associated servo motors.

  • Danfoss Hydraulic Components: Valves, pumps, and motors used in industrial hydraulic systems.

  • Danfoss Soft Starters: MCD 500 Series, MCD 600 Series

  • Danfoss Frequency Converters: VLT AutomationDrive FC 302, VLT HVAC Drive FC 102

  • Danfoss Servo Motors: BMH Series, MPL Series

This list is not exhaustive. If you have a Danfoss product not listed, please contact us for a free evaluation. We have the expertise and resources to repair a wide variety of Danfoss industrial equipment.



Common Danfoss Problems We Repair

Danfoss equipment, while robust, can experience failures due to various factors such as age, environmental conditions, and operational stress. Roc Industrial LLC specializes in diagnosing and repairing a wide range of common issues that can affect Danfoss products. We understand the critical role these components play in your operations and are committed to providing effective and efficient repair solutions.

  • No Output: The device fails to provide any output voltage or current.

  • Overvoltage/Undervoltage: The output voltage exceeds or falls below the specified limits.

  • Communication Errors: Issues with communication protocols such as Ethernet, Modbus, or Profibus.

  • Overheating: Excessive heat generation due to component failure or inadequate cooling.

  • Blown Fuses: Frequent fuse failures indicating a short circuit or overload condition.

  • Encoder Faults: Problems with the encoder feedback system in servo drives, leading to inaccurate positioning.

  • Drive Trips: Unexpected shutdowns or fault codes displayed on the drive.

  • Parameter Corruption: Loss or corruption of programmed parameters.

  • Dead on Arrival (DOA): Unit fails to operate immediately upon installation.

  • Internal Component Failure: Issues with capacitors, resistors, or integrated circuits.

  • Power Supply Instability: Fluctuations or irregularities in the power output.

  • Motor Stalling: Motor stops unexpectedly due to overload or drive malfunction.


Our Danfoss Repair Process

Roc Industrial LLC follows a meticulous and comprehensive repair process to ensure the highest quality and reliability of our Danfoss repair services. Our experienced technicians use state-of-the-art equipment and proven techniques to diagnose and repair your Danfoss equipment efficiently and effectively.

  1. Free Evaluation and Quote: We begin with a free evaluation of your Danfoss equipment to identify the problem and provide you with a detailed repair quote. There are no hidden fees, and you only pay for the repair if you approve the quote.

  2. Shipping Instructions: Once you approve the quote, we provide clear and easy-to-follow shipping instructions to ensure your equipment arrives safely at our repair facility. We can also arrange for pickup services in certain areas.

  3. Diagnosis Using Specialized Test Equipment: Our technicians use advanced diagnostic tools and equipment to pinpoint the root cause of the problem. We conduct thorough testing to identify all faulty components and potential issues.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing only the faulty components with high-quality replacements. This approach saves you money and ensures the longevity of the repair. We maintain a large inventory of Danfoss components to expedite the repair process.

  5. Load Testing and Quality Checks: After the repair, we subject the equipment to rigorous load testing and quality checks to ensure it meets or exceeds original performance specifications. We simulate real-world operating conditions to verify its reliability.

  6. Warranty-Backed Return and Support: All our Danfoss repairs are backed by a comprehensive warranty. We stand behind our work and provide ongoing support to ensure your satisfaction. If you experience any issues after the repair, simply contact us, and we will resolve them promptly.


Nationwide Repair Services

Roc Industrial LLC provides Danfoss repair services to customers nationwide. No matter where you are located, we can help you get your Danfoss equipment back up and running quickly. We understand the importance of minimizing downtime and offer fast shipping options and quick turnaround times to meet your needs.


We serve customers in major metropolitan areas across the United States, including New York, Los Angeles, Chicago, Houston, and Dallas. Our efficient logistics network ensures that your equipment is transported safely and securely to our repair facility. We also offer expedited repair services for critical applications where downtime is not an option.



Why Choose Roc Industrial LLC?

When you choose Roc Industrial LLC for your Danfoss repair needs, you benefit from our extensive experience, technical expertise, and commitment to customer satisfaction. We are dedicated to providing the highest quality repair services at competitive prices.

  • 30+ Years of Experience: With over three decades of experience in industrial electronic repair, we have the knowledge and skills to handle even the most complex Danfoss repairs.

  • Warranty-Backed Repairs: All our repairs are backed by a comprehensive warranty, giving you peace of mind and assurance of quality.

  • Thousands of Parts in Stock: We maintain a large inventory of Danfoss components, allowing us to expedite the repair process and minimize downtime.

  • Fast Turnaround, Often Same-Day: We understand the urgency of your repair needs and offer fast turnaround times, often providing same-day service for critical applications.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring that we adhere to the highest standards of quality and efficiency.

  • Exceptional Customer Support: Our dedicated customer support team is available to answer your questions and provide assistance throughout the repair process.

Don't let a faulty Danfoss component slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Danfoss repair. We are your trusted partner for all your Danfoss repair, service, troubleshooting, testing, and refurbishment needs. We offer free evaluations and warranty-backed services.

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