VFD Repair Services in Delhi NCR — What to Expect and What It Costs
If a variable frequency drive stops working at your plant, the whole process can come to a halt. Motors stop running, production slows down, and every hour of downtime costs money. Getting the right VFD repairing service quickly is not just important, it is urgent.
This guide covers everything you need to know about VFD repair, what causes drives to fail, how the repair process works, how much it costs, and when it makes more sense to replace rather than repair.
What is VFD Repair?
A Variable Frequency Drive (VFD) is an electronic device that controls the speed of an electric motor. Like any electronic equipment, VFDs can develop faults over time due to power surges, heat, dust, moisture, or age.
VFD repair is the process of diagnosing the fault, identifying the damaged component, replacing or fixing it, and then testing the drive to make sure it runs correctly before putting it back into service.
Most VFD faults are repairable. A skilled service engineer can fix the majority of drive failures without needing a full replacement, which saves significant cost and time.
Common VFD Faults That Need Repair
Before a VFD goes completely dead, it usually gives warning signs. Here are the most common faults that bring drives in for repair:
Overcurrent fault
The drive trips on overcurrent when it detects more current than expected. This can be caused by a motor winding fault, a mechanical jam, incorrect parameter settings, or a failing IGBT inside the drive.
Overvoltage or undervoltage fault
Power supply fluctuations cause these faults. They are common in areas with unstable grid supply. Repeated voltage spikes can damage the DC bus capacitors inside the drive.
IGBT failure
IGBTs are the power switching components inside a VFD. They are the most commonly replaced component in drive repair. IGBT failure usually causes the drive to trip immediately on startup or produce an error code.
Display or control board fault
The control board manages parameters, communication, and user interface. If the display goes blank, shows incorrect readings, or the drive stops responding to commands, the control board is usually the cause.
Overheating
VFDs generate heat during operation. If the cooling fan fails or the heatsink gets blocked with dust, the drive overheats and shuts down. Repeated overheating damages internal components over time.
Capacitor degradation
DC bus capacitors store energy inside the drive. They degrade over time, usually after 5 to 7 years of operation. A failing capacitor causes unstable output, voltage ripple, and eventually complete drive failure.
How VFD Repair Works — Step by Step
At Adhunik Automation, every VFD repair follows a structured process to make sure the drive is fully tested before it goes back into service:
Step 1 — Fault Diagnosis
Our engineer reads the fault history from the drive’s memory, checks error codes, and performs a visual inspection for obvious damage, burnt components, swollen capacitors, damaged IGBTs, or corroded terminals.
Step 2 — Component Level Testing
Using test equipment, we check individual components: IGBTs, gate driver boards, control boards, DC bus capacitors, power supply circuits, and communication modules. This tells us exactly what needs to be replaced.
Step 3 — Repair and Component Replacement
Damaged components are replaced with original or approved equivalent parts. IGBT modules, capacitors, gate drivers, and control cards are the most commonly replaced items. All replacements are sourced from verified suppliers.
Step 4 — Parameter Backup and Restore
Before any repair, we back up the drive’s existing parameters. After the repair, all parameters are restored exactly as they were — so the drive goes back into service without any re-commissioning needed.
Step 5 — Load Testing
The repaired drive is tested under load conditions at our Ghaziabad service centre before dispatch. We run it through its full speed range, check current draw, output voltage, and temperature, to make sure everything is working correctly.
Step 6 — On-Site Reinstallation
Our engineer installs the repaired drive back at your site, runs a final operational check, and hands over a service report with details of the fault, repair carried out, and parts replaced.
VFD Repair vs Replacement — Which Should You Choose?
This is the most common question facility managers ask when a drive fails. The answer depends on a few factors:
Repair makes sense when:
- The drive is less than 8 to 10 years old
- The fault is a known repairable component, IGBT, capacitor, control board
- The drive model is still supported and spare parts are available
- The cost of repair is less than 40 to 50 percent of a new drive
Replacement makes sense when:
- The drive is over 10 years old and multiple components are failing
- Spare parts are no longer available for that model
- The repair cost exceeds 50 percent of the price of a new drive
- The drive has been repaired multiple times and keeps failing
At Adhunik Automation, we give you an honest assessment after diagnosis. If replacement is the better option, we will tell you, and we can supply a new Danfoss VFD from stock with full manufacturer warranty.
How Much Does VFD Repair Cost in India?
VFD repair costs in India vary depending on the drive size, the brand, and the type of fault. Here is a general guide:
| Drive Size | Typical Repair Cost Range |
|---|---|
| Up to 5 kW | Rs. 2,000 — Rs. 6,000 |
| 5 kW to 30 kW | Rs. 5,000 — Rs. 18,000 |
| 30 kW to 75 kW | Rs. 12,000 — Rs. 35,000 |
| Above 75 kW | Rs. 25,000 — Rs. 80,000+ |
These are approximate ranges. The actual cost depends on which components need replacement and how many. We provide a detailed written quote after diagnosis, before any repair work begins.
Transit damage, water ingress, or lightning strike damage tend to cost more to repair because multiple components are usually affected at the same time.
Brands We Repair
Our service engineers are trained on a wide range of drive brands and models. We repair:
- Danfoss VLT and VACON drives
- ABB drives
- Siemens SINAMICS drives
- Schneider Electric Altivar drives
- Allen Bradley PowerFlex drives
- Mitsubishi FR series drives
- Yaskawa drives
- Delta drives
For Danfoss drives specifically, our engineers hold factory training certifications, which means deeper knowledge of the product and faster turnaround on Danfoss-specific faults.
VFD Annual Maintenance Contract — Prevent Failures Before They Happen
Most VFD failures are preventable. Dust buildup, loose terminals, degraded capacitors, and failing cooling fans all give warning signs before they cause a complete breakdown.
Our VFD Annual Maintenance Contract covers:
- Scheduled preventive maintenance visits, 2 to 4 times per year depending on the plan
- Cleaning of heatsinks, fans, and control boards
- Thermal imaging to identify hot components before they fail
- Capacitor health check and replacement if needed
- Parameter backup and verification
- Priority response for breakdown calls, within 4 to 8 hours across Delhi NCR
An AMC is particularly valuable for facilities running critical processes, water treatment plants, hospital HVAC systems, manufacturing lines, where drive downtime directly impacts operations.
Frequently Asked Questions
Standard repairs at our Ghaziabad service centre take 2 to 5 working days depending on parts availability. For drives brought in directly, same-day diagnosis and next-day repair is possible for common faults. On-site repair for simple faults can be completed in a few hours.
Water damage repairs are more complex because moisture can affect multiple boards and components. We assess each case individually. In some cases, a thorough clean, dry, and component replacement brings the drive back. In severe cases, replacement may be the better option.
Yes. Our engineers cover Delhi, Noida, Ghaziabad, Faridabad, and Gurugram for on-site repair. For drives that need component-level repair, we bring the drive to our service centre and return it after testing.
We repair most major brands including Danfoss, ABB, Siemens, Schneider, Allen Bradley, and Mitsubishi. If you are unsure whether we can repair your specific model, call us and we will confirm.
We provide a 3-month warranty on all repairs carried out at our service centre. This covers the specific fault repaired and the components replaced.
Book a VFD Repair with Adhunik Automation
Adhunik Automation provides VFD repair services across Delhi NCR, Noida, Ghaziabad, Faridabad, and Gurugram. We handle all major brands, provide a written quote before starting work, and back every repair with a 3-month warranty.
If your drive is down or showing fault codes, get in touch with our team. We respond within 24 hours for repair enquiries and can arrange on-site diagnosis at your facility.
If you are managing multiple drives across a large site, ask about our energy audit service, we identify drives that are at risk of failure before they cause downtime.
Call: +91 93100 85027
Email: kaushik@adhunikautomation.com