Carrier Error Code 13: Limit/Rollout Fault
How to Fix Carrier Code 13
- Step 1: Turn off the furnace immediately at the breaker.
- Step 2: Check and replace your air filter if it's dirty.
- Step 3: Ensure all vents are open and not blocked by furniture.
- Step 4: Call a qualified HVAC technician to inspect the furnace.
What Does Carrier Error Code 13 Mean?
The Carrier error code 13, often displayed as a blinking LED pattern, signifies a 'Limit/Rollout Fault'. This means that either a limit switch or a rollout switch within your furnace has been triggered. These switches are safety devices designed to shut down the furnace when it detects potentially dangerous conditions like overheating or a flame where it shouldn't be. A limit switch monitors the furnace's internal temperature, and if it gets too hot, the switch opens, cutting off the gas supply. A rollout switch detects flames outside the normal burner area, indicating a potentially hazardous situation. Because this code indicates a potential safety issue, it's important to address it promptly. Continuing to run the furnace with this error could lead to equipment damage or, more seriously, a fire or carbon monoxide poisoning. Do not attempt to bypass any safety switches.
Common Causes of Carrier Code 13
- Blocked or dirty air filter restricting airflow and causing overheating.
- Closed or blocked vents restricting airflow.
- Faulty limit switch.
- Flame rollout due to a cracked heat exchanger or blocked burner.
- Failed blower motor not moving enough air.
Applicable Carrier Models
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This error requires immediate attention from a licensed HVAC technician. Do not attempt repair yourself.
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