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Boiler & Burner Troubleshooting
Troubleshooting for steam and hot-water boiler systems, burner start sequences, flame failures, modulation, limits, low-water controls, pressure switches, actuators, and operating problems.
GREAT NORTHERN MECHANICAL • TECHNICAL FIELD SERVICE
Industrial Boiler & Burner Service
Great Northern Mechanical provides technical field service for industrial and commercial boilers, burners, flame-safeguard systems, gas trains, combustion, safeties, interlocks, and burner controls. The work is focused on diagnosing real operating problems and restoring reliable burner and boiler operation.
INDUSTRIAL BOILER & BURNER SERVICE
Boiler service is more than replacing parts—it requires understanding the entire burner sequence.
GNM approaches boiler and burner problems as integrated systems. Flame safeguard, gas pressure, air proving, ignition, actuators, operating limits, low-water controls, pressure or temperature control, and combustion all have to work together for safe and dependable operation.
FIELD SERVICE CAPABILITIES
Troubleshooting, combustion, safety controls, and modernization for burner-fired boiler systems.
Service can range from a single burner lockout to controls modernization, combustion tuning, CSD-1-oriented safety testing, gas-train troubleshooting, and broader boiler-room diagnostics.
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Burner Controls & Flame Safeguard
Diagnosis, replacement, commissioning, and modernization support for Honeywell, Fireye, Siemens LMV, burner-management systems, flame scanners, proving circuits, and control panels.
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Combustion Tuning
Combustion analysis and burner adjustment using O₂, CO, draft, stack temperature, gas pressure, and flame stability to verify safe and repeatable operation.
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Gas Trains & Interlocks
Troubleshooting regulators, valves, low/high gas pressure switches, proof-of-closure circuits, air-proving switches, vent valves, interlocks, and related burner permissives.
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CSD-1 & Safety Verification
Testing and verification support for burner safeties, low-water controls, operating and manual limits, proving circuits, pressure switches, and combustion-related safety devices.
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Controls Modernization
Control rewires, flame-safeguard conversions, actuator and interface upgrades, HMI modernization, and replacement of obsolete burner-control components.
TROUBLESHOOTING FOCUS
The most valuable troubleshooting starts with the sequence of operation.
When a burner will not light or a boiler will not stay online, GNM works through the permissives, inputs, outputs, flame signal, gas train, airflow, controls, and combustion condition to isolate the cause instead of guessing at components.
Common Boiler & Burner Service Calls
- Burner lockout or nuisance trip
- Pilot lights but main flame does not establish
- Flame signal drops out during firing
- Low/high gas pressure or air-proving faults
- Actuator, linkage, proof-of-closure, or modulation problems
- Operating-limit, low-water, pressure-control, or temperature-control issues
- High stack temperature, unstable combustion, CO, O₂, or draft problems
- Legacy burner-control system ready for modernization
Boiler & Burner Systems Supported
- Industrial and commercial fire-tube boiler systems
- Water-tube and modular boiler systems
- Industrial burners and packaged burner systems
- Burner-management and flame-safeguard systems
- Gas trains, interlocks, safeties, actuators, and field instrumentation
- Boiler feed, condensate, and related boiler-room controls when tied to burner/boiler operation
CONTROLS & PLATFORMS
Controls experience across the platforms commonly found in industrial boiler rooms.
GNM supports burner-management, flame-safeguard, pressure and temperature controls, actuators, HMIs, process signals, and panel troubleshooting across multiple burner and controls platforms.
REGIONAL SERVICE AREAS
Serving selected industrial markets across Indiana, Michigan, and Ohio.
Great Northern Mechanical is based in Kendallville, Indiana and provides mobile field service. The pages below describe current target service markets and do not represent separate office locations.
CONTACT GREAT NORTHERN MECHANICAL
Need industrial boiler or burner service?
Call or email with the boiler and burner model, control platform, fault code, operating pressure or temperature, and a description of the failure. Combustion readings and control-display photos can also help with the initial assessment.