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Fault Detection and Diagnostics
Achieve portfolio-wide energy efficiency, operational control, and occupant comfort. Detect equipment faults in real time, automatically diagnose root causes, and enable proactive maintenance that reduces operating costs and extends asset life.
The Challenge: When Building Systems Fail Without Warning
Facility managers face constant pressure to improve energy efficiency, reduce operational costs, and maintain occupant comfort while managing aging infrastructure with limited staff. Reactive maintenance strategies and schedule-based inspections frequently miss emerging issues until failures occur. Maintenance teams spend valuable time diagnosing problems instead of resolving them.
An estimated 30% of building energy is wasted through operational inefficiencies, and up to 80% of equipment fails before reaching expected service life.
Source: U.S. Department of Energy O&M Best Practices Guide
Common Challenges
- Reactive maintenance leading to costly emergency repairs
- Limited visibility into equipment health and performance trends
- Energy waste from simultaneous heating and cooling
- Comfort complaints due to inconsistent environmental conditions
- Understaffed teams lacking time and expertise for diagnostics
Resulting Business Impact
- Increased contribution to global energy-related CO₂ emissions
- Unplanned downtime and premature equipment replacement
- Declining workforce satisfaction due to poor comfort conditions
- Difficulty meeting sustainability and ESG reporting requirements
- Elevated operational costs driven by inefficient energy performance
Sources: International Energy Agency; Workplace comfort studies
Modern fault detection solutions must identify emerging performance deviations automatically, diagnose root causes accurately, and enable corrective action before performance degradation escalates into equipment failure.
The Solution: Fault Detection & Diagnostics with GENESIS
GENESIS provides fault detection and diagnostics (FDD) capabilities that identify issues early, automatically diagnose root causes, and enable proactive maintenance across systems and sites.
A rules-based engine analyzes building data to detect anomalies, pinpoint performance deviations, and deliver actionable insights. Facility teams gain clarity, faster resolution, and scalable oversight across portfolios without increasing operational complexity.
Click on the image above to see the filter station dashboard in greater detail.
Real-World Results
22 Bishopsgate
Commercial Real Estate
22 Bishopsgate uses GENESIS FDD capabilities to maintain design-level performance through proactive fault detection and optimization.
Result highlights:
- Pre-emptive issue resolution based on quantifiable impact
- Enhanced building performance and occupant comfort
- Optimized engineering team efficiency
- Long-term performance tuning at design standards
"The GENESIS system will not only allow our team to pre-emptively fix the right issues at the right time, but it will enable us to do this based on the quantifiable impact unfixed faults will have on building performance and occupant comfort."
Peter Bicknell
Head of Engineering, 22 Bishopsgate
Brézillon
Construction and Sustainable Buildings
Brézillon uses FDD capabilities in GENESIS to continuously monitor HVAC, energy, and environmental systems in a newly constructed commercial building. Engineering teams gain actionable insight to correct issues early, reduce energy waste, and maintain reliable, standards-based operation.
Result highlights:
- Early detection of HVAC and system performance deviations
- Proactive identification of energy inefficiencies
- Improved environmental quality and occupant comfort
- Performance insights to support sustainability and reliability
"Brézillon is an industrial civil engineering, construction management and rehabilitation company. They chose GENESIS by Mitsubishi Electric Iconics Digital Solutions to ensure their new building was built with respect for environmental quality and safety, with the means to monitor and regulate the facility automatically in order to reduce energy costs."
Brézillon
Operational Outcomes and Business Benefits
Energy and Cost Savings
Achieve median energy savings of 9%, with some organizations reducing energy consumption and operating costs by up to 31%.*
Proactive Maintenance
Transition from reactive to preventive maintenance, reduce emergency repairs by up to 75%, and extend equipment lifespan.**
Improve Comfort
Monitor temperature, humidity, and air quality continuously to resolve HVAC faults before occupant comfort is affected.
Portfolio Scalability
Standardize operational practices across locations through centralized monitoring and remote decision-making capabilities.
Sources:
*Lawrence Berkeley National Laboratory (2020)
**U.S. DOE O&M Best Practices Guide (2010)
Fault Detection & Diagnostics Capabilities
Automated Fault Detection
Use asset modeling and configurable fault rules to continuously monitor HVAC, lighting, and electrical systems in real time. Thousands of automated checks analyze performance patterns and surface anomalies such as stuck dampers, leaking valves, and simultaneous heating and cooling conditions.
Intelligent Diagnostics
Move beyond basic alerts with automated root cause analysis. Identify probable root causes, assess impact on comfort and energy performance, and generate recommended corrective actions with cost calculations that help prioritize response by severity.
Flexible Rules Engine
Deploy preconfigured fault rules or configure logic to match operational requirements. Use a comprehensive function library to define complex conditions based on duration, equipment state, schedules, and performance thresholds.
Actionable Insights and Integration
Deliver prioritized insights through interactive dashboards, automated notifications, and integration with CMMS platforms. Filter faults by time range, severity, asset, and estimated cost to direct maintenance resources toward the highest-impact issues.
Proven Performance, Backed by Research
GENESIS Fault Detection & Diagnostics is built on validated methodologies supported by extensive industry research. Studies conducted by Lawrence Berkeley National Laboratory and the U.S. Department of Energy show that organizations implementing FDD achieve median annual energy savings of 9%, with some facilities reaching up to 31% reduction in energy consumption. As operational teams gain experience with FDD tools and workflows, savings often increase over time.
Source: Lawrence Berkeley National Laboratory, "Building fault detection and diagnostics: Achieved savings" (2020)
Common operational improvements identified through FDD:
- Optimization of plant run times, achieving up to 24% HVAC energy reduction
- Elimination of simultaneous heating and cooling, reducing loads by 5% to 20%
- Correction of setpoint failures and control sequence errors
- Detection of stuck dampers, leaking valves, and sensor calibration issues
- Improvement of economizer performance and outdoor air utilization
Sources: U.S. DOE "Energy Savings Modeling of Standard Commercial Building Re-tuning Measures" (2012); Energy Engineering Vol 106 (2009); BEIS synthesis study (2016)
Beyond energy performance gains, FDD supports a structured transition from reactive maintenance to predictive maintenance practices. Predictive approaches reduce emergency repairs, extend equipment lifespan, and lower total maintenance costs by up to 30%.
Research indicates predictive maintenance delivers eight to twelve times return on investment compared to reactive strategies, with portfolio-level savings reaching a median of $3 million annually.
Sources: U.S. DOE O&M Best Practices Guide (2010); Lawrence Berkeley National Laboratory study of 6,500 buildings (2020)
Ready to Learn More?
FDD Overview
Download a comprehensive eBook exploring how Fault Detection & Diagnostics unlocks building efficiency, control, and comfort at portfolio scale.
GENESIS Platform Brochure
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Transform building operations with intelligent fault detection and proactive maintenance.