EHC Repair Services India
EHC (Elektronik Heizung Kontrolle) is a German specialist in precision temperature control and industrial heating management systems. Founded in 1952, EHC manufactures advanced thyristor power controllers, solid-state relays, and process temperature regulation equipment trusted across European and Asian manufacturing sectors. In India, EHC equipment is deployed in chemical plants, pharmaceuticals, textile dyeing, plastic extrusion, and metal heat treatment industries where precise thermal management is mission-critical.
EHC (Elektronik Heizung Kontrolle) is a German specialist in precision temperature control and industrial heating management systems. Founded in 1952, EHC manufactures advanced thyristor power controllers, solid-state relays, and process temperature regulation equipment trusted across European and Asian manufacturing sectors. In India, EHC equipment is deployed in chemical plants, pharmaceuticals, textile dyeing, plastic extrusion, and metal heat treatment industries where precise thermal management is mission-critical.
Synchronics Electronics has 180+ engineers experienced in repairing the complete EHC product portfolio — including power controllers, phase-angle regulators, and process heating control modules. Our Vadodara facility diagnoses and repairs EHC equipment failures including thyristor faults, sensing circuit breakdowns, and control logic errors. We understand EHC's reputation for reliability and restore equipment to factory specifications within 7-10 working days, keeping your thermal processes running without unplanned downtime.
Synchronics restores EHC heating controllers to precise calibration — eliminating temperature drift and control instability.
EHC Product Lines We Repair
Our engineers are trained on the full EHC product range. Below are the major product families we service.
EHC Power Controllers (Phase-Angle & Burst-Fire)
Thyristor-based AC power controllers for resistive heating loads, furnaces, and process ovens. Common failures include thyristor short circuits, gate drive circuit faults, and phase synchronization errors causing voltage ripple and overheat shutdowns.
EHC Temperature Regulators & PID Controllers
Microprocessor-based closed-loop temperature regulators with sensor input and proportional output control. Repair addresses sensor linearization errors, proportional-integral-derivative tuning drift, and display panel LCD failures.
EHC Solid-State Relays (SSR) & Contactors
Semiconductor switching modules for heating element control with zero-crossing trigger and snubber protection. Typical faults include triac failure under inductive loads, output short-to-ground, and isolation breakdown between input and output.
EHC Sensor & Signal Conditioning Interfaces
Thermocouple and RTD input modules with cold-junction compensation and 4-20mA transmitter outputs. Common issues: thermocouple open-circuit detection failure, millivolt amplifier offset drift, and noise filtering inadequacy in EMI-rich environments.
EHC Overload & Thermal Protection Units
Redundant thermal sensing and load-cut protection for heating elements and immersion heaters. Repair involves calibration of thermal threshold detection, reset mechanism restoration, and overvoltage suppression circuit verification.
Why Choose Synchronics for EHC Repairs?
PCB-Level Expertise
We repair down to the component level — not just swap boards. Our engineers identify root causes, replace failed IGBTs, capacitors, processors, and gate drivers on EHC equipment.
Fast Turnaround
Standard 7–10 working days. Express 3–5 days available for critical breakdowns. Emergency same-day/next-day service for unplanned downtime.
6-Month Warranty
Every repaired unit ships with a 6-month comprehensive warranty on parts and labour. Our repair success rate is over 94% across all brands.
All-India Service
Couriered repairs accepted from any city in India. Doorstep pickup available in Vadodara, Mumbai, Pune, Ahmedabad, Surat, Chennai, and more.
Common EHC Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in EHC equipment arriving at our workshop.
- ✓Thyristor SCR short-circuit — no load power output — EHC thyristor power controllers experience junction degradation and gate-cathode leakage after 5-8 years in high-ambient-temperature (>45°C) plants. Short-circuit often triggered by voltage transients or dv/dt overshoot during switching.
- ✓Temperature oscillation and overshoot — proportional band tuning lost — EHC PID regulators drift tuning parameters due to EEPROM bit-flip in high-EMI environments or manual mis-calibration. Load transient response becomes unstable, causing temperature swings of ±10-20°C around setpoint.
- ✓Sensor input open-circuit — controller goes to maximum heating — EHC thermocouple or RTD wiring failures are common in vibration-prone (spinning equipment, compressors) or corrosive (salt spray, ammonia) environments. Connector pin oxidation and cable insulation degradation are typical in Indian textile and chemical plants.
- ✓Triac output module — load shorted to ground, no switching — EHC solid-state relay triac failure often results from inductive kick-back on resistive heating loads. Inadequate snubber capacitor sizing (common in retrofit installations) allows voltage spikes >600V to degrade the triac junction.
- ✓Display panel LCD blank or pixel corruption — partial readout loss — EHC temperature regulator LCD displays fail due to moisture ingress in coastal (Mumbai, Chennai) and high-humidity (Pune monsoon) installations. Thermal cycling and solder joint stress cause segment driver IC interconnect fractures.
- ✓Phase-angle regulator — erratic voltage output, noise on load — EHC phase-angle controller's zero-cross detection circuit fails when subjected to contaminated power (THD >8%, harmonics from VFDs). Optical isolator degradation causes false trigger timing and uneven half-cycle conduction.
How We Repair Your EHC Unit
Receive & Log
Your unit is logged into our tracking system with a unique job number. You receive WhatsApp / email updates at every stage.
Fault Diagnosis
Board-level diagnosis using oscilloscopes, LCR meters, and thermal cameras. Root cause identified before any repair begins.
Component Repair
Faulty ICs, capacitors, MOSFETs, IGBTs, and gate drivers replaced with genuine or equivalent-spec components.
Full-Load Test
Unit tested under rated load with original or equivalent motor. All parameters verified. 6-month warranty issued.
Industries Using EHC Equipment
We serve plant maintenance teams across all major industries where EHC automation is deployed.
Frequently Asked Questions — EHC Repairs
Do you repair EHC equipment anywhere in India?+
Yes. Synchronics repairs the full EHC product range — thyristor power controllers, temperature regulators, solid-state relays, and sensor interfaces — across all of India. We offer same-day courier pickup from Mumbai, Delhi, Pune, Bangalore, Chennai, Hyderabad, Kolkata, Ahmedabad, Jaipur, Surat, and 100+ other cities. All repairs are handled at our main facility in Vadodara, Gujarat, with turnaround of 7-10 working days.
What is the typical repair cost for an EHC thyristor power controller?+
EHC controller repair costs ₹8,000-₹18,000 depending on fault severity. Simple thermocouple input card failures run ₹5,000-₹8,000. Complete thyristor stack replacement with recalibration is ₹15,000-₹25,000. We provide free diagnosis and written quote within 24 hours. Compare that to new controller purchase at ₹35,000-₹80,000 — repair saves 60-75% of replacement cost.
Can Synchronics repair EHC controllers with custom programming or DIP-switch configuration?+
Yes. Synchronics engineers are trained in EHC parameter recovery and reconfiguration. We document your original DIP-switch settings and EEPROM tuning constants before repair. After component replacement, we restore all custom PID gains, hysteresis values, and control logic. We test the reconfigured unit under simulated load conditions before return shipment.
Does EHC equipment need recalibration after repair?+
Recommended. After thyristor replacement or PID regulator repair, EHC controllers benefit from field recalibration using a calibrated thermocouple reference (Class A, ±1.5°C). Synchronics provides calibration guidance and can arrange on-site verification for large industrial plants in Gujarat, Maharashtra, and Rajasthan. For remote sites, we furnish detailed calibration procedure and remote support.
What is Synchronics' warranty on EHC repair?+
All EHC repairs carry 12-month parts & labor warranty covering the same fault. If a repaired thyristor controller fails again within 12 months due to our workmanship, we repair it free (excluding freight). We maintain 98% first-time repair success rate on EHC equipment backed by 30+ years experience with German industrial electronics brands.
How do I send my EHC unit for repair?+
Pack the unit securely and courier it to our Vadodara workshop. Include a note with the fault description and your contact details. We will log it into our system and WhatsApp you a job number within 24 hours of receipt. Doorstep pickup is available in Vadodara, Ahmedabad, Surat, Mumbai, and Pune.
What is the cost of repairing a EHC drive or PLC?+
Repair cost depends on the model and the fault. We offer a free diagnosis — once we identify the fault, we provide a fixed quotation before proceeding. Typical repairs cost 20–40% of the new unit price. We will never repair without your approval.
What warranty do you provide on EHC repairs?+
All repaired units carry a 6-month comprehensive warranty covering the same fault and related issues. If the fault recurs within the warranty period, we repair it free of cost.
Do you provide a no-fix, no-fee guarantee?+
Yes. If we cannot repair your EHC unit after diagnosis, you pay only the diagnosis fee (₹500–₹1,500 depending on the product). The unit is returned to you at no additional charge.
EHC Repair Catalog
No products found for EHC
Don't See Your EHC Model Listed?
We repair the full range of EHC industrial electronics — even if the specific model is not yet in our catalog. Send us the unit details and we'll confirm repairability within 24 hours.
Free evaluation • 6-month warranty • PAN India pickup
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Send us your faulty industrial electronics. Our engineers will diagnose it and provide a detailed quote within 24 hours — with no obligation to proceed.
Free Evaluation
No obligation
48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service