Skip to main content
Error code reference
Carrier Error Codes
Error codes for Carrier appliances, organized by type. Each links to the full diagnostic procedure.
33error codes
3appliance types
Browse by appliance type
View all Carrier service manualsGet the full diagnostic procedure for any Carrier code
Step-by-step tests, expected values, wiring diagram references, and verified part numbers.
Get Started $9.95 3-day pass$29/month for unlimited access to all brands and Max AI diagnostics.