Automatic Fault Detection & Diagnosis (AFDD)
Continuously monitors your building systems to catch issues early—so you reduce downtime, avoid expensive failures, and keep equipment running efficiently
Property Type
Outcomes
Managing a commercial building means overseeing hundreds of interconnected systems e.g. chillers, AHUs, water systems, fire alarms, and more. When something goes wrong, traditional BMS systems flood your team with disconnected alarms, leaving technicians guessing what actually matters. Critical faults get buried in noise, energy is wasted for days before anyone notices, and by the time a failure is confirmed, repair costs and downtime have already escalated.
The problem isn't a lack of data. It's the inability to act on it fast enough.
AFDD is an intelligent fault management application designed to give building operators and facility supervisors a single workspace for fault visibility and resolution across 1 building or a portfolio of 100+ properties. It continuously monitors building systems in real time, automatically detects abnormal behavior, diagnoses root causes, and guides your team through resolution without manual inspection or alarm-chasing.
AFDD connects directly to your existing BMS via BACnet, Modbus, or MQTT without hardware replacement required.
Fault Detection Across All Major Subsystems
Continuous real-time monitoring across chiller plants, air-side systems (AHU/FCU), sanitary and water systems, and fire alarm systems. Detecting deviations the moment they occur.
Automated Diagnosis & Root Cause Analysis
AFDD identifies not just that something is wrong, but what and why. A single underlying issue is traced through its downstream effects and surfaced as one consolidated fault with a full causal chain. Eliminating alarm floods.
Issue Prioritization by Financial Impact
Every detected fault is scored by priority levels and quantified in energy waste or estimated avoidable cost (฿/day). Your team always knows which issue to fix first based on actual business impact, not whichever alarm fired most recently.
Recommended Actions with Evidence
Each issue comes with step-by-step recommended actions, confidence-scored probable causes, estimated fix time, and an evidence chart comparing actual vs. ideal equipment behavior. Giving technicians everything they need before they enter the field.
Configurable Rule Engine
Enable, tune, and deploy fault detection rules across multiple properties from a single interface. With per-property threshold overrides, bulk deployment, and template-based onboarding. A full audit log tracks every rule change.
Top Properties trust AltoTech to make their building smart
FAQs
What systems can AFDD monitor?
How does AFDD help reduce energy costs?
Do I need to replace my existing BAS?
Stop guessing and start fixing
Deploy AFDD to detect faults early, reduce downtime, and unlock measurable energy savings for your Net Zero and ESG goals.
☑️ Prevent Costly Equipment Failures
Catching faults early before they cause breakdowns, reduces unplanned downtime and extends the operational life of critical assets like chillers and air handling units.
☑️ Eliminate Alarm Fatigue
Root cause analysis groups related symptoms into single, actionable issues. Instead of 50 alerts from one failing component, your team sees one prioritized fault with a clear resolution path.
☑️ Recover Hidden Energy Waste
Faults like stuck dampers, fouled condensers, and leaking reheat valves silently drain energy for weeks. AFDD surfaces these continuously and quantifies the exact cost so nothing falls through the cracks.
☑️ Faster Resolution, Every Time
With probable causes, evidence charts, recommended actions, and resolution history all in one place, technicians resolve issues faster and with greater confidence. Reducing mean time to repair (MTTR) across the portfolio.
☑️ Standardize Operations Across All Sites
The rule engine and template system ensure consistent fault detection standards are applied across every property. Whether onboarding a new mall, hotel, or office building.