Commercial Chiller Fault Code Lookup

Search fault codes for Carrier, Trane, York, Daikin, McQuay, Lennox, ClimaCool & Multistack commercial chillers

Popular Brands

Carrier 30XA CodesCarrier 30HXC CodesCarrier 30XW CodesCarrier 23XRV CodesTrane RTAC CodesTrane RTHD CodesTrane CVHF CodesTrane RTHB Codes

About This Tool

This is a professional fault code reference tool designed for commercial HVAC service technicians, facility managers, and building engineers. Quickly look up alarm codes for major commercial chiller brands to understand error meanings, identify probable causes, and follow recommended inspection steps.

Browse by Brand

Select a manufacturer to view all supported model series and fault codes

Carrier
4 Model Series
129 Fault Codes
Trane
4 Model Series
124 Fault Codes
York
4 Model Series
120 Fault Codes
Daikin
4 Model Series
127 Fault Codes
McQuay
4 Model Series
122 Fault Codes
Lennox
4 Model Series
120 Fault Codes
ClimaCool
2 Model Series
60 Fault Codes
Multistack
2 Model Series
60 Fault Codes

Technical Resources & Tools

Free reference materials and online calculators for HVAC technicians

How Chillers Work
Technical Guide
Refrigeration Cycle
Types of Chillers
Reference Guide
Air vs Water-Cooled
Maintenance Checklist
Preventive Maint.
Daily to Annual
Troubleshooting Wizard
Interactive Tool
Symptom-Based
HVAC Tools
Calculators
PT, Superheat, More
Resource Library
Standards & Manuals
ASHRAE, NFPA
Disclaimer: All lookup data is for reference only. Do not use this information to replace certified professional HVAC technician judgment. Always refer to original OEM official service manual.