What It Means
Communication between the outdoor control board and user interface is lost.
Bryant Air Conditioner
Bryant Air Conditioner Error Code 16
Troubleshooting guide for the Bryant Air Conditioner system fault 16.
Possible Causes
- Loose or damaged communication wiring.
- Incorrect thermostat or UI wiring connections.
- System control board communication failure.
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
Communications Loss. Communication with the control/UI has been lost.
All Recorded Causes
Check wiring to the User Interface, indoor unit, and outdoor unit for loose connections or damage. Verify thermostat/UI wiring is correct. Power cycle the system and re-test communication.
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 wiring to the User Interface, indoor unit, and outdoor unit for loose connections or….
- Check for intermittent communication faults caused by connectors, moisture, or damaged harnesses, and rule out verify thermostat/UI wiring is correct.
- 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.
