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Carrier Furnace Error Codes

Complete LED blinking code directory and troubleshooting guides

Emergency: 778-909-5731

How to Read Carrier Error Codes

LED Diagnostic Light System
Carrier furnaces use blinking LED lights to indicate error codes
  1. Locate the LED diagnostic light on your furnace control board
  2. Count the number of flashes in the sequence
  3. Find your code number below (e.g., 13 flashes = Code 13)
  4. Click on the code for detailed troubleshooting

Carrier Error Codes

Code 13
Limit Switch Lockout
Critical
Code 14
Ignition Lockout
Critical
Code 21
Pressure Switch Stuck Closed
Code 23
Pressure Switch Stuck Open
Critical
Code 31
Pressure Switch Open - Low Heat
Code 33
Pressure Switch Open - High Heat
Critical
Code 41
Blower Motor Offline
Critical

Can't Find Your Code?

We're continually expanding our error code database. If you can't find your specific Carrier error code, our experienced technicians can diagnose and repair any Carrier furnace issue.

Call for Help: 778-909-5731
Call 778-909-5731