Chiller Down? Diagnose the Problem in Minutes.
The field-ready troubleshooting system for centrifugal and screw chillers — fault trees, pressure/temp worksheets, oil diagnostics, capacity control checks, and ChatGPT prompts for high-stakes calls.
Instant download · Covers centrifugal & screw chillers · Real field diagnostics · PDF + ChatGPT prompts
A chiller failure can cost thousands per hour. The delta T is wrong. The cooling tower isn't pulling heat. The oil is the wrong viscosity. Without a systematic approach, you're guessing — and guessing on a $500K piece of equipment is a career-ending mistake.
Every Chiller Diagnostic Tool You Need, Built for the Field
Complete Chiller Troubleshooting System
A practical diagnostic sequence for commercial chillers — from the first alarm screen to water-side verification, oil system checks, refrigerant circuit readings, and final fault isolation.
- Centrifugal chiller fault trees for motor, compressor, cooling tower, and controls
- Screw chiller diagnostics for oil viscosity, rotor clearance, and superheat
- Capacity modulation and unloading system checks
- Field-ready diagnostic charts for pressure, temperature, amps, and delta T
ChatGPT Prompt Templates
Prompts for fault history analysis, approach temperature interpretation, oil differential checks, and customer writeups.
Pressure/Temp Diagnostic Worksheets
Pull panel data, calculate delta T, compare approach temps, and separate water-side faults from refrigerant-side faults.
Common Chiller Faults Checklist
High head, low suction, surge, low oil pressure, overcurrent, nuisance trips, and capacity control failures.
Instant Download
PDF guide plus copy-ready prompts and worksheets you can keep on a tablet, laptop, or service phone.
Built for the Pros Responsible for Critical Cooling
The Commercial Service Tech
You're dispatched to large cooling plants where a fault code is only the starting point. This gives you the field sequence to isolate water side, refrigerant, oil, and controls issues.
The Facilities Manager
You manage multi-unit cooling plants and need to understand whether the issue is tower performance, flow, controls, or the chiller itself before approving a repair.
The Senior Lead Technician
You train other techs on high-stakes equipment. Standardize the troubleshooting process so the team stops chasing symptoms and starts proving causes.
From Techs Who Had to Prove the Root Cause Fast
“Found the fault before the second callback.”
“A 260-ton screw chiller kept locking out on oil pressure. The guide walked me through the unloading valve and oil differential checks instead of just swapping sensors.”
Marcus H.
Commercial Chiller Tech, Houston TX
“Saved us from authorizing the wrong repair.”
“Our centrifugal was tripping high head every afternoon. The tower approach worksheet showed the condenser water side was the problem, not the compressor.”
Daniel R.
Facilities Supervisor, Phoenix AZ
“Made chiller calls teachable.”
“I use the fault trees with junior techs. They know what numbers to pull from the panel, what to calculate, and when to stop and call factory support.”
Tasha M.
Lead Service Technician, Atlanta GA
Chiller Troubleshooting Doesn't Have to Be a Guessing Game.
One missed water-side issue, one misunderstood oil fault, one wrong restart — and the building is still warm. Get the complete chiller diagnostic system for $29.99.