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VFD phase loss rebuild for Parker

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.

Parker VFD Repair Services by Roc Industrial LLC

Is your Parker VFD (Variable Frequency Drive) malfunctioning and causing downtime? Roc Industrial LLC specializes in providing fast, reliable, and expert Parker VFD repair services to get your critical equipment back up and running quickly. We understand the importance of minimizing downtime in your operations, and our experienced technicians are equipped to diagnose and repair a wide range of Parker VFD issues. Trust Roc Industrial LLC as your trusted partner for all your Parker VFD repair needs.



About Parker VFDs

Parker is a globally recognized leader in motion and control technologies, and their VFDs are known for their performance, reliability, and advanced features. Parker VFDs are used in a wide variety of industrial applications, including pumps, fans, conveyors, compressors, and other motor-driven equipment. These drives offer precise motor control, energy savings, and enhanced system performance. Parker's reputation for innovation and quality has made them a preferred choice for demanding industrial environments.


Parker VFDs are integral to numerous industries, including manufacturing, oil and gas, water treatment, and HVAC. Their ability to precisely control motor speed and torque allows for optimized process control, reduced energy consumption, and extended equipment life. From simple applications to complex automation systems, Parker VFDs provide the versatility and performance required to meet the diverse needs of modern industry. Roc Industrial LLC understands the critical role these drives play in your operations and is committed to providing the highest quality Parker VFD repair services.



Supported Models & Series

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

  • Parker AC10 Series VFDs

  • Parker AC30 Series VFDs

  • Parker AC690+ Series VFDs

  • Parker 890 Series VFDs

  • Parker 690PB Series VFDs

  • Parker SSD 590+ Series DC Drives (often integrated with VFD systems)

  • Parker 6054 Series VFDs

  • Parker 6058 Series VFDs

  • Parker 650V Series VFDs

  • Parker XV Series VFDs

  • Parker GV Series VFDs

  • Parker P3 Series VFDs

  • Parker H3 Series VFDs

  • Parker Packaged Drives (specific models vary)

If you don't see your specific Parker VFD model listed, please contact us. Our technicians have extensive experience with a wide variety of Parker VFDs and can likely assist you with your repair needs.



Common Parker VFD Problems We Repair

Parker VFDs are generally reliable, but like any electronic equipment, they can experience failures over time. We commonly see a variety of issues that can impact the performance of your Parker VFD. Here are some of the common problems we repair:

  • No Output Voltage: The VFD fails to provide the necessary voltage to the motor, preventing it from running. This can be caused by internal component failures, such as IGBTs or capacitors.

  • Overvoltage Faults: The VFD detects an excessive voltage level, triggering a fault and shutting down the drive. This can be due to regenerative energy from the motor or issues with the power supply.

  • Overcurrent Faults: The VFD detects an excessive current draw, indicating a potential problem with the motor or the load. This can be caused by motor winding shorts, excessive load, or incorrect VFD settings.

  • Communication Errors: The VFD loses communication with the control system, preventing proper operation. This can be due to faulty communication cables, network issues, or problems with the VFD's communication module.

  • Overheating: The VFD overheats due to inadequate cooling, excessive load, or component failures. This can lead to premature component failure and reduced VFD lifespan.

  • Blown Fuses: Fuses within the VFD blow due to overcurrent or short circuits. This is often a symptom of a more serious underlying problem.

  • Encoder Faults: If the VFD uses an encoder for feedback, encoder faults can occur due to encoder damage, wiring issues, or problems with the VFD's encoder interface.

  • DC Bus Undervoltage: The DC bus voltage drops below the required level, causing the VFD to fault. This can be caused by a weak power supply or excessive load.

  • Ground Faults: The VFD detects a current leakage to ground, indicating a potential insulation failure. This is a serious safety hazard and requires immediate attention.

  • Phase Loss: Input or output phase loss can cause the VFD to shut down or operate erratically. This can be due to a problem with the power supply or the motor wiring.

  • IGBT Failures: Insulated Gate Bipolar Transistors (IGBTs) are critical components in the VFD's power stage. They can fail due to overvoltage, overcurrent, or overheating.

  • Capacitor Failures: Capacitors are used for filtering and energy storage in the VFD. They can degrade over time, leading to reduced performance and eventual failure.

  • Parameter Corruption: The VFD's configuration parameters can become corrupted, leading to incorrect operation. This can be caused by power surges or software glitches.


Our Parker VFD Repair Process

Roc Industrial LLC follows a comprehensive and meticulous repair process to ensure the highest quality Parker VFD repairs. Our process includes:

  1. Free Evaluation and Quote: We offer a free evaluation of your faulty Parker VFD to determine the extent of the damage and provide you with a detailed repair quote. There are no hidden fees or obligations.

  2. Shipping Instructions: Once you approve the quote, we provide clear and concise shipping instructions to ensure your VFD arrives safely at our repair facility. We can also arrange for expedited shipping if needed.

  3. Diagnosis Using Specialized Test Equipment: Our experienced technicians use state-of-the-art test equipment to thoroughly diagnose the VFD and identify the root cause of the problem. We utilize advanced diagnostic techniques to pinpoint even the most elusive issues.

  4. Component-Level Repair and Replacement: We perform component-level repairs, replacing faulty components with high-quality replacements. We have a vast inventory of Parker VFD components in stock, allowing us to expedite the repair process. We source components from trusted suppliers to ensure the reliability of our repairs.

  5. Load Testing and Quality Checks: After the repair is complete, we rigorously load test the VFD to ensure it performs to its original specifications. We conduct thorough quality checks to verify the functionality and reliability of the repaired VFD.

  6. Warranty-Backed Return and Support: We stand behind our repairs with a comprehensive warranty. If you experience any issues with the repaired VFD, simply contact us, and we will provide prompt and professional support.


Nationwide Repair Services

Roc Industrial LLC provides Parker VFD repair services to customers nationwide. We understand that downtime can be costly, so we offer fast turnaround times and expedited shipping options to minimize disruption to your operations. Whether you're located in New York, Los Angeles, Chicago, Houston, Dallas, or any other city in the United States, we can help you get your Parker VFD back up and running quickly.


We have established efficient logistics processes to ensure prompt and reliable service regardless of your location. Our team is experienced in handling VFDs of all sizes and configurations, and we take extra care to protect your equipment during transit. Contact us today to learn more about our nationwide Parker VFD repair services.



Why Choose Roc Industrial LLC?
  • 30+ Years of Experience: We have over 30 years of experience in industrial electronic repair, giving us the expertise to handle even the most complex Parker VFD repairs.

  • Warranty-Backed Repairs: We stand behind our repairs with a comprehensive warranty, providing you with peace of mind.

  • Thousands of Parts in Stock: We maintain a vast inventory of Parker VFD components, allowing us to expedite the repair process.

  • Fast Turnaround, Often Same-Day: We understand the importance of minimizing downtime, so we offer fast turnaround times, often with same-day service available.

  • ISO-Certified Repair Processes: Our repair processes are ISO-certified, ensuring the highest quality and consistency.

  • Exceptional Customer Support: We are committed to providing exceptional customer support, from initial consultation to post-repair assistance.

Don't let a faulty Parker VFD slow down your operations. Contact Roc Industrial LLC today for a free evaluation and fast, reliable Parker VFD repair.

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