VFD Repair Services – AC, DC, Servo, HVAC & VRF Drive Repair

When a drive fails, everything connected to it stops. Machines wait, staff wait, and progress stops. Whether the drive controls a production machine, a conveyor, or HVAC equipment, downtime affects the entire workflow.
At Epoch Technical Services, an ISO 9001:2015 certified company, we specialize in repairing all types of industrial drives — not just replacing them. We work on VFDs, AC and DC drives, Servo drives, Soft Starters, Spindle drives, HVAC drive repair and VRF drive repair.
Most drives can be repaired safely and cost-effectively. When we fix instead of replace, our clients often save up to 70% compared to buying a new drive.

Why We Stand Out

We don’t “guess” and replace entire boards. We identify the exact component that failed, repair it, and extend the life of your drive.
All repairs are performed in-house in a static-controlled environment using proper testing equipment. The drive is then tested on real motor load, not just powered up on a bench.
Our purpose is simple :
Get your drive back to stable working condition and reduce your downtime.

Drives We Repair

VFD (Variable Frequency Drives)
AC motor drives
DC drive units and speed controllers
Servo drives and servo amplifiers
Spindle drives
Soft starters
HVAC drives
VRF / VRV system drives

If the drive is dead, tripping, overheating, or unstable — we can restore it.

Common Drive Symptoms We Fix

You might be seeing one of these issues:

Drive will not power on
Continuous tripping / shutdown during
Error codes like OC / OH / OV / LV / SCF
Fan failure or excessive heat warning
Incorrect speed output or parameter loss
Servo feedback or encoder errors
VRF outdoor unit not starting due to drive fault
HVAC motor not running even though system is powered

Share the model number and fault code, and we’ll guide you immediately.

How Our Repair Process Works

1. Free Evaluation
Send the faulty drive. We check the issue and identify the cause — no charge.
2. Clear Estimate
We explain what failed and what it takes to fix it. Work only starts once you approve it.
3. Component-Level Repair
We repair only what is necessary — IGBTs, power sections, control electronics, cooling modules, etc.
4. Load Testing
We test the repaired drive on actual motor load to ensure stability.
5. Ready to Install
The drive is returned fully tested and ready to go back into the machine.

What You Gain Working With Us

Repairs done in-house
Faster turnaround than sourcing new drives
No hidden costs or unnecessary replacements
Strong understanding of automation and industrial electronics
Cost-saving approach — repair first, replace only if needed

Our job is not only to fix equipment, but also to help you keep your operations moving.

Brands We Work With

We repair drives from :
Mitsubishi - ABB - Siemens | Danfoss - Yaskawa - Delta - Omron - Fuji Electric- Schneider Electric - Rockwell - Hitachi …and many more. If the brand is not listed, send the model number the chances are we already support it.

Our Service Promise

At Epoch Technical, we value long-term business relationships over short-term transactions. You receive clear communication, fair pricing, and a repair that is built to last. Your trust matters, and so does your production uptime.

If your VFD, AC & DC drive, Servo drive, Spindle drive, HVAC drive or VRF drive requires attention, we are ready to assist.
Tell us the issue — we will take care of the rest.