What It Means
Compressor is running electrically but failing to pump refrigerant.
Bryant Air Conditioner
Bryant Air Conditioner Error Code 79
Troubleshooting guide for the Bryant Air Conditioner system fault 79.
Possible Causes
- Severe refrigerant loss or system blockage.
- Flooded start condition or liquid slugging.
- Internal mechanical damage in compressor pump.
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.
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Full Diagnosis
Compressor No-Pump Event. No-pump condition detected at compressor.
All Recorded Causes
Check refrigerant charge level. Inspect for refrigerant system blockage. Verify compressor suction and discharge pressures. Check for flooded compressor start condition. Inspect inverter drive output. Board retries after 5 minutes.
Verify Before Replacing Parts
- Confirm the exact Bryant model family and air conditioners context before acting on a generic code description.
- Confirm board LEDs, wiring polarity, and model compatibility before replacing control boards — this Bryant fault points at check refrigerant charge level.
- Check for intermittent communication faults caused by connectors, moisture, or damaged harnesses, and rule out inspect for refrigerant system blockage.
- After the correction, run the system long enough to confirm the air conditioners fault does not return under normal load.
Still unsure about this fault?
ACLogics walks you through Bryant Air Conditioner diagnostics step-by-step — so you confirm the cause before swapping parts.
