DUNGS Repair Services India
DUNGS is a globally recognized German manufacturer specializing in gas safety equipment, burner controls, and combustion management systems since 1928. Their precision flame safeguard devices, gas pressure regulators, and safety shutoff valves are trusted across industrial boilers, furnaces, and process heating applications worldwide. DUNGS has a strong presence in Indian manufacturing through authorized distributors, serving refineries, chemical plants, steel mills, and power generation facilities.
DUNGS is a globally recognized German manufacturer specializing in gas safety equipment, burner controls, and combustion management systems since 1928. Their precision flame safeguard devices, gas pressure regulators, and safety shutoff valves are trusted across industrial boilers, furnaces, and process heating applications worldwide. DUNGS has a strong presence in Indian manufacturing through authorized distributors, serving refineries, chemical plants, steel mills, and power generation facilities.
Synchronics Electronics maintains one of India's most specialized repair capabilities for DUNGS combustion control equipment. Our 180+ engineers have restored over 11 DUNGS product families including flame safeguard units, multibloc valve assemblies, gas pressure controllers, and safety solenoids. We diagnose DUNGS flame failure faults, electrode fouling issues, and pressure regulator drift — restoring critical burner safety systems to factory specifications, with PAN India pickup and same-day diagnostics from our Vadodara facility.
Master technicians certified in DUNGS flame safeguard and multibloc safety system repairs.
DUNGS Product Lines We Repair
Our engineers are trained on the full DUNGS product range. Below are the major product families we service.
DUNGS Flame Safeguard Systems (Honeywell OEM equivalent)
Electric flame detection and burner safety control units monitoring flame presence in gas burners. Common repairs include electrode carbon fouling, detector tube failure, relay contact wear, and flame signal loss diagnostics on safety-critical applications.
DUNGS Multibloc Valve Assemblies
Integrated gas shutoff, pressure regulation, and safety isolation blocks used in modulating boiler systems. Typical faults include valve seat wear, solenoid coil burnout, pilot gas leakage, and regulator diaphragm rupture requiring precision rebuilds.
DUNGS Gas Pressure Regulators and Safety Shutoff Valves
Precision pressure control and isolation devices for burner gas supply lines. Repair focus includes regulator drift correction, valve spool stiction, spring relaxation, and calibration to customer-specified setpoints.
DUNGS Combustion Air and Flue Gas Safety Controls
Pressure switches and flow monitoring devices verifying adequate combustion air and clear flue gas exhaust. Common failures include diaphragm rupture, electrical terminal corrosion, and mechanical switch calibration drift.
DUNGS Solenoid Valve Coils and Pilot Systems
Electromagnetic coils and pilot valve assemblies controlling main shutoff valve operation in safety chains. Typical repairs address coil insulation breakdown, pilot orifice blockage, and armature stiction from carbon deposit accumulation.
DUNGS Electronic Burner Controls and Modules
Modern digital flame safeguard and modulating control modules with integrated diagnostics. Repairs include PCB component replacement, relay module failure, sensor signal conditioning issues, and software upload verification.
Why Choose Synchronics for DUNGS 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 DUNGS 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 DUNGS Equipment Faults We Fix
Based on 30+ years of repair data, these are the most frequent failure modes we see in DUNGS equipment arriving at our workshop.
- ✓Flame Signal Loss - Electrode Fouling — Carbon and fuel residue accumulation on DUNGS flame detection electrodes in heavy oil or gas burners causes detector tube resistance to spike, preventing flame signal transmission to the FGD safety module. Most common in furnaces with incomplete combustion or poor air supply.
- ✓Multibloc Solenoid Coil Burnout — Sustained voltage overspike, thermal cycling stress, or manufacturing defect in DUNGS MB-DLE solenoid coils causes insulation breakdown and winding shorts. Moisture ingress through damaged connectors accelerates coil failure in humid plant environments.
- ✓Gas Pressure Regulator Drift and Hunting — Spring relaxation, diaphragm wear, or spool stiction in DUNGS FRG517/519 regulators causes outlet pressure to creep above setpoint or oscillate, destabilizing burner modulation. Sediment and oxidized fluid contamination damages the regulator spool seal.
- ✓Safety Shutoff Valve Leakage and Seat Wear — Particulate matter in gas supply erodes DUNGS valve seats and spool edges in safety block assemblies, allowing pilot or main gas to bleed past the closure element. Thermal cycling and vibration loosen sealing surfaces over time.
- ✓Flame Safeguard Module Relay Chatter and Dropout — Contact wear, arc erosion, or coil voltage dropout in DUNGS FGD safety relay modules causes intermittent flame signal interpretation, triggering false lockout conditions. Aged contact springs lose tension after 5-7 years of thermal cycling.
- ✓Pilot Gas Line Blockage and Flame Failure — Sediment, sludge, or ice crystal formation in DUNGS pilot gas supply tubing restricts flow to pilot solenoid, starving the pilot burner. Moisture in gas supply freezes in winter months on outdoor boiler installations across northern India.
How We Repair Your DUNGS 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 DUNGS Equipment
We serve plant maintenance teams across all major industries where DUNGS automation is deployed.
Frequently Asked Questions — DUNGS Repairs
Do you repair DUNGS equipment anywhere in India?+
Yes. Synchronics repairs the full DUNGS product range — flame safeguard systems, multibloc valve assemblies, gas pressure regulators, solenoid valves, and combustion safety controls. We offer PAN India door pickup from Mumbai, Delhi, Pune, Chennai, Hyderabad, Ahmedabad, Jaipur, and all other cities. Same diagnostics and rebuild facility in Vadodara, Gujarat with same-day turnaround for emergency shutdowns.
What is a DUNGS flame safeguard module and why does it fail?+
DUNGS FGD flame safeguard modules (FGD90, FGD95, FGD96, FGD97) electronically monitor flame presence in gas burners using cadmium sulfide or UV flame detectors. They fail due to electrode carbon fouling, detector tube aging (typical life 3-5 years), relay contact wear from repeated ignition cycles, and 24V supply voltage instability. Synchronics performs complete module testing with calibrated flame signal injection, replacing aging detector tubes and contact assemblies, and verifying reset response time.
How do you test DUNGS multibloc valve assemblies after repair?+
We perform bench hydro-testing to 25 bar on all DUNGS multibloc repairs, checking for seat and seal leakage (< 1 drop/min), solenoid coil electrical continuity and insulation resistance (> 1 megaohm), pilot pressure regulation accuracy within ±5%, and main valve spool smoothness under manual actuation. Electronic modules are flame-signal tested with 0.5-2 second response verification. All work backed by 12-month warranty.
What causes DUNGS gas pressure regulator drift on boiler applications?+
DUNGS FRG regulators drift due to spring relaxation (loses 0.1-0.5 bar per year), diaphragm material fatigue and microcracking from thermal cycling between 40-80°C, and spool seal wear from contaminated or oxidized gas supply. On Indian boiler systems with untreated natural gas, sediment and moisture accelerate regulator deterioration. Synchronics recalibrates regulators to exact setpoint using precision test gauges and replaces all seals and springs, typically restoring ±0.1 bar accuracy.
Can you repair DUNGS electronic burner control modules, or do they need replacement?+
DUNGS electronic modules can often be repaired. Our technicians replace failed relay blocks, sensor signal conditioning circuits, and damaged connector pins. PCB components like capacitors and transistors are individually replaced with rated equivalents. We upload software/firmware where needed and perform full flame signal and modulation simulation testing. Approximately 75% of failed DUNGS electronic modules are cost-effectively repaired versus replacement.
How do I send my DUNGS 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 DUNGS 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 DUNGS 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 DUNGS 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.
DUNGS Repair Catalog
Showing 1–11 of 11 DUNGS products
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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
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48hr Turnaround
Fastest in India
6-Month Warranty
Every repair
No Fix, No Charge
Zero risk policy
Pan-India Pickup
Doorstep service