What It Means
Compressor speed range is cut back due to operating conditions.
Bryant Heat Pump
Bryant Heat Pump Error Code 2s_on_1s_off
Troubleshooting guide for the Bryant Heat Pump system fault 2s_on_1s_off.
Possible Causes
- Restricted airflow over indoor or outdoor coil.
- Incorrect refrigerant charge level.
- Extreme outdoor ambient temperature conditions.
Not sure which one it is — or if it's none of these? Try ACLogics today.
Disclaimer: This information is for general reference. Error codes can vary by model and production year. Always refer to your machine's specific manual and the information printed on the unit itself.
New to this code? Click to see why this happens
Full Diagnosis
Variable Speed Range Cutback. Amber LED pattern is 2 seconds on with a longer pause and 1 second off, indicating variable-speed range cutback.
All Recorded Causes
Unit is limiting its speed range due to operating conditions. Check for restricted airflow on indoor or outdoor coil. Verify refrigerant charge is within specification. Check outdoor ambient temperature conditions.
Verify Before Replacing Parts
- Confirm the exact Bryant model family and heat pumps context before acting on a generic code description.
- Verify airflow first, then confirm operating pressures and temperature relationship before adjusting charge, since unit is limiting its speed range due to operating conditions.
- Look for restrictions, iced coils, or dirty heat-transfer surfaces that can mimic a charge problem, and separately confirm check for restricted airflow on indoor or outdoor coil.
- After the correction, run the system long enough to confirm the heat pumps fault does not return under normal load.
Still unsure about this fault?
ACLogics walks you through Bryant Heat Pump diagnostics step-by-step — so you confirm the cause before swapping parts.
