Carrier Error Code 11: No Previous Error
How to Fix Carrier Code 11
- Step 1: Verify that the HVAC system is operating as expected (heating or cooling).
- Step 2: If the system is functioning normally, no action is required. The 'No Previous Error' code is informational.
- Step 3: If you are experiencing issues, note the symptoms and contact a qualified HVAC technician for further diagnosis.
How to Reset Carrier Code 11
- Turn off the furnace power switch, usually located on or near the unit.
- Turn off the circuit breaker for the furnace. Wait 30 seconds.
- Restore power at the breaker and flip the furnace switch back on.
- Set the thermostat to call for heat. If the error code returns after 2-3 ignition attempts, the fault requires repair.
What does 11 mean?
The Carrier error code 11, labeled as "No Previous Error," simply means that the system's control board hasn't stored any prior error codes in its memory. Think of it like a clean slate. This is perfectly normal when you first install the unit, after a technician clears the error history during maintenance, or after a power outage that resets the board's memory. It doesn't indicate a problem; rather, it confirms that the system hasn't encountered any issues recently.
If you're seeing this code during normal operation and the system seems to be working fine, there's nothing to worry about. However, if you're troubleshooting a problem and expect to see a different error code, it might indicate that the control board's memory was recently cleared, or the error you're experiencing is intermittent and hasn't been recorded yet. In this case, continue monitoring the system for any recurring issues.
Affected Models
- Performance Series Furnace
- Comfort Series Furnace
- Infinity Series Furnace
- Performance Series
- Base Series Furnace
- Performance Boost Furnace
- Performance Boost 95 Furnace
- WeatherMaker 8000
- WeatherMaker 9300
- Infinity 80
- WeatherMaker Furnace
- 24ABC6 Air Conditioner
- 25HBC5 Heat Pump
- Performance Series Heat Pump
- Infinity Series
- Base Series
- Comfort Series
- Infinity Series Heat Pump
- Comfort Series Heat Pump
- Infinity 20 Heat Pump with Greenspeed Intelligence
- Comfort 80 Gas Furnace
Replacement Parts
| Part | OEM Number | Est. Cost |
|---|---|---|
| Control Board | — | — |
Related Codes on Same Models
| Code | Description | Severity |
|---|---|---|
| 12 | Blower On After Power Up | Warning |
| 13 | Limit/Rollout Fault | Critical |
| 14 | Ignition Lockout | Critical |
| 21 | Gas Heating Lockout | Critical |
| 22 | Abnormal Flame | Critical |
| 23 | Pressure Switch Fault | Warning |
| 24 | Secondary Voltage Fuse | Warning |
| 31 | High Stage Pressure Fault | Warning |
| 32 | Low Flame Sense | Warning |
| 33 | Limit/Rollout Switch Lockout | Critical |