Table of Contents
EV Charger Repair Company Hyderabad | Doorstep Fixes & Fast Support
Electric mobility across Telangana relies heavily on maximum uptime for charging infrastructure. As a specialized EV charger repair company in Hyderabad, we deliver doorstep diagnostics, emergency repairs, component-level overhaul, and preventive maintenance for residential AC wallboxes, commercial fleet stations, and public DC fast-charging plazas.
From repairing burnt charging guns and faulty contactors caused by Hyderabad’s extreme summer heat to resolving ground-fault trips caused by monsoon moisture, our certified high-voltage field engineers restore operational capacity across all major AC/DC charger brands.
┌──────────────────────────────────────────────────────────────────────────────────┐
│ EV CHARGER DIAGNOSTIC & REPAIR WORKFLOW │
├──────────────────────────────────────────────────────────────────────────────────┤
│ [1] FIELD / REMOTE INITIAL DIAGNOSTICS │
│ ├── Remote OCPP Error Log Analysis & Telemetry Assessment │
│ └── On-Site AC/DC Voltage, Impedance & Thermal Imaging Sweep │
│ │
│ [2] COMPONENT-LEVEL TROUBLESHOOTING │
│ ├── High-Voltage Power Module & Contactor Inspection │
│ └── Control Board (CCID/CP Signal), RFID & Modem Fault Testing │
│ │
│ [3] REPAIR EXECUTION & COMPONENT REPLACEMENT │
│ ├── Gun/Connector Cable Swap, Pin Polishing & Terminal Re-Torquing │
│ └── PCB Component Refurbishment or Power Unit Swapping │
│ │
│ [4] VERIFICATION, SAFETY INTERLOCKS & HANDSHAKE TEST │
│ ├── Insulation Resistance (Megger) & Earth Impedance Check (<2Ω) │
│ └── ISO 15118 / DIN 70121 Communication & Live Load Bank Test │
└──────────────────────────────────────────────────────────────────────────────────┘
Why Choose a Specialized EV Charger Repair Partner in Hyderabad
EV Charging Supply Equipment (EVSE) integrates high-voltage AC/DC power electronics, dynamic microcontrollers, and cloud telemetry software. General electrical contractors often lack the specialized diagnostics required for these systems:
- TSSPDCL Grid & Local Sags: Grid fluctuations across Hyderabad, particularly during peak summer hours, lead to frequent over-voltage, under-voltage, and neutral float faults that damage sensitive charger microcontrollers.
- Thermal Derating & Heat Failures: Ambient temperatures exceeding 42°C in Cyberabad basement parkings degrade cooling fans, weld contactors, and trigger thermal shutoffs in unventilated wallboxes.
- Monsoon Moisture Ingress: High humidity and direct rain during the monsoon season cause earth leakage faults (RCD/RCCB trips) in public charging guns and outdoor power cabinets.
- Multi-OEM Diagnostic Capability: Certified service tools for all major Indian and international charging hardware brands, eliminating dependency on single OEM service timelines.
Comprehensive Repair & Maintenance Services
Our repair portfolio covers every critical point of failure in private and commercial charging infrastructure:
1. AC Wallbox & Home Charger Repairs
- Control Pilot (CP) / Proximity Pilot (PP) Fault Isolation: Diagnosing signal communication failures between the vehicle’s onboard charger (OBC) and the wallbox.
- Contactor & Relay Replacement: Replacing welded, pitted, or failed main power contactors that cause silent charge failures or permanent power isolation.
- Internal Power Supply & PCB Repair: Repairing damaged low-voltage control boards, auxiliary power supplies, and internal communication relays damaged by voltage surges.
2. Commercial & Public DC Fast Charger Overhauls
- Power Module Swaps & Recalibration: Servicing modular AC-DC power units (15kW/20kW/30kW blocks), diagnosing phase loss, and restoring full kW output capacity.
- Cooling System & Fan Maintenance: Clearing clogged dust filters, replacing high-CFM exhaust fans, and maintaining liquid-cooled cable units in 120kW+ hyper-chargers.
- CCS2 / CHAdeMO / GB/T Cable Repair: Swapping damaged charging cables, replacing worn latch mechanisms, repairing broken temperature sensors inside gun handles, and replacing eroded terminal pins.
3. Electrical Infrastructure & Earthing Rectification
- Chemical Earth Pit Refurbishment: Testing and upgrading degraded grounding pits to maintain ground resistance strictly below 2 Ohms, preventing dangerous ground fault errors.
- Protective Switchgear Swaps: Replacing tripped or degraded Type B RCDs, RCBOs, MCBs, and blown main line Surge Protection Devices (SPDs).
4. Software, Firmware & OCPP Connectivity Fixes
- OCPP Communication Diagnostics: Resolving offline status issues caused by cellular modem failures, broken WebSocket links, or corrupt OCPP 1.6J/2.0.1 protocol stacks.
- Firmware Upgrades & RFID Controller Reset: Flashing updated OEM firmware to fix handshake bugs with newly released electric vehicle models.
Common Failures Handled Across Key Sectors
| Sector / Location | Common Fault Observed | Repair Solution Delivered |
| Gated Communities (Kondapur, Miyapur, Bachupally) | Frequent RCCB tripping, low input voltage, neutral-to-earth voltage leaks. | Earth pit re-hydration/replacement, neutral isolation transformer checks, sub-panel breaker upgrade. |
| Commercial IT Parks (HITEC City, Gachibowli) | Physical gun drops, broken connector latches, RFID card reader failure. | Heavy-duty CCS2 gun handle replacement, terminal re-pinning, RFID sensor board swap. |
| Fleet & Bus Depots (Shamshabad, Medchal, Cherlapally) | DC module overheating, communication dropouts under continuous load. | Air intake filter cleanouts, high-speed fan replacement, CAN-bus communication wire shielding. |
| Highway Plazas (ORR Exits, NH 65, NH 44) | Lightning surge damage, display screen burnout, backend connection loss. | SPD module replacement, industrial touchscreen overhaul, high-gain external 4G/5G antenna integration. |
Standardized Field Repair Procedure
[Service Request Received via Phone or Portal]
│
▼
[Remote Telemetry Analysis & Triage]
• Review OCPP logs, error codes, and symptoms
• Assign certified field technician with correct replacement parts
│
▼
[Doorstep / On-Site Inspection]
• Conduct input voltage, phase balance, thermal scan, and Megger test
• Pinpoint root cause (Grid vs. Wiring vs. Charger Hardware vs. Vehicle)
│
▼
[Component Repair or Module Replacement]
• Replace faulty boards, contractors, cables, or power modules
• Re-torque high-voltage connections and restore environmental sealing
│
▼
[Safety Interlock Check & Live Session Demo]
• Validate <2Ω earth ground, test RCD trip response, initiate live charge session
• Issue digital field service report and warranty documentation
Coverage Areas Across Hyderabad Metropolitan Region
Our equipped mobile diagnostic vans provide emergency repair coverage across all major zones in Telangana:
- Cyberabad & Tech Hubs: HITEC City, Gachibowli, Madhapur, Kondapur, Financial District, Nanakramguda, Raidurg, Kokapet, Manikonda.
- Northern Suburbs & Residential Belts: Kukatpally, Miyapur, Bachupally, Nizampet, Kompally, Jeedimetla, Balanagar, Medchal, Quthbullapur.
- Eastern & Southern Corridors: LB Nagar, Uppal, Dilsukhnagar, Cherlapally, Auto Nagar, Shamshabad Airport Zone, Kattedan.
- Central City & Outlying Arteries: Banjara Hills, Jubilee Hills, Begumpet, Secunderabad, Ameerpet, ORR Interchanges, NH 65, NH 44.
Supported Charger Brands & OEM Hardware
We maintain a local stock of critical spare parts and provide expert repair services for all popular brand ecosystems:
- AC Chargers: Delta Electronics, Exicom, ABB, Schneider Electric, Siemens, Bolt.earth, Kazam, Tata Power EZ Charge, Servotech, Relux.
- DC Fast Chargers: Delta (City Charger), Exicom (Harmony Series), ABB (Terra), Mass-Tech, Trinity Touch, Servotech, Siemens (Sicharge).
- OEM Wallboxes: Tata Motors, MG Motor, Hyundai, BYD, Kia, BMW, Mercedes-Benz, Mahindra, Ather, Ola, TVS.
Frequently Asked Questions (15 FAQs)
Q1: What types of EV chargers do you repair in Hyderabad?
Answer: We repair all varieties of EV charging equipment, including home AC wallboxes (3.3kW to 22kW), commercial dual-gun AC pedestals, and high-voltage DC fast chargers (30kW to 240kW+) across all major brands.
Q2: Do you offer doorstep EV charger repair in Hyderabad?
Answer: Yes, our certified engineers operate mobile diagnostic vans that deliver doorstep service across Hyderabad, including apartment basements, private residences, office spaces, and commercial hubs.
Q3: Why is my EV charger tripping the main MCB or RCCB breaker?
Answer: Frequent breaker tripping is typically caused by neutral-to-earth voltage leaks, moisture inside the charging gun, an overloaded electrical circuit, or an internal short circuit within the charger’s contactor assembly.
Q4: How quickly can a service technician arrive for an emergency repair?
Answer: For commercial fleets and public fast-charging operators under an AMC agreement, we offer response times as fast as 2 to 4 hours. Standard doorstep residential calls are typically addressed within 24 hours.
Q5: Can a damaged EV charging gun or cable handle be replaced separately?
Answer: Yes. If the charging cable or CCS2/Type-2 gun handle is cracked, burnt, or has worn-out pins, we replace the cable assembly directly without requiring you to purchase an entirely new wallbox.
Q6: What causes an EV charger to show a “Ground Fault” or “Earth Error”?
Answer: Ground faults occur when the earthing resistance exceeds 2 Ohms or when there is a potential voltage difference between the neutral and earth wires. This is often due to dried-out chemical earth pits or improper original wiring.
Q7: Can you fix EV chargers that went offline and lost backend connection?
Answer: Yes. We diagnose modem failures, corrupt SIM connections, broken WebSocket parameters, and damaged control boards to restore OCPP communication with your management backend.
Q8: What happens if the repair cannot be completed on-site?
Answer: If complex component-level micro-soldering or extensive DC power module refurbishing is necessary, we safely dismantle the control unit, bring it to our central lab, and reinstall it after bench testing.
Q9: Do you provide warranty on replaced EV charger spare parts?
Answer: Yes. All replaced components—including contactors, cables, control boards, and power modules—come with a 6-month to 12-month service warranty depending on the part category.
Q10: How much does a basic EV charger diagnostic visit cost in Hyderabad?
Answer: On-site inspection and diagnostic fees start at ₹500–₹1,200 depending on location and charger complexity. If you proceed with the quoted repair work, the inspection fee is adjusted against the final invoice.
Q11: Why does my charger stop charging mid-way during summer afternoons?
Answer: High ambient temperatures trigger the charger’s internal thermal protection, causing it to throttle or shut down. We resolve this by servicing cooling fans, adding heat shielding, or improving ventilation.
Q12: Can you upgrade an older EV charger’s firmware?
Answer: Yes. We perform direct flashing of updated manufacturer firmware to resolve compatibility issues with newly launched EV models or vehicle software updates.
Q13: Do you offer Annual Maintenance Contracts (AMC) for commercial EV chargers?
Answer: Yes. We provide comprehensive AMCs for corporate offices, fleet hubs, and public charging networks. AMC plans include quarterly preventive maintenance, emergency callout response, and discounted spares.
Q14: How do I know if the fault is in my EV charger or the car itself?
Answer: Our technicians use calibrated handheld diagnostic tools and load simulators to independently test the charger’s output. This isolates whether the issue stems from the grid connection, charger hardware, or vehicle battery management system (BMS).
Q15: How can I schedule an emergency repair service in Hyderabad?
Answer: You can book a doorstep diagnostic visit by contacting our customer service hotline or submitting an online repair request with your location and charger error details.