What It Means
Inverter DC bus voltage dropped below minimum threshold.
Bryant Air Conditioner
Bryant Air Conditioner Error Code 92
Troubleshooting guide for the Bryant Air Conditioner system fault 92.
Possible Causes
- Utility line undervoltage condition.
- Undersized supply wiring or loose terminals.
- Failing inverter DC bus capacitor or board circuit.
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
Inverter VDC-Out Under Voltage Event. Inverter VDC output under-voltage event detected.
All Recorded Causes
Measure supply voltage at outdoor unit for undervoltage. Check for undersized wiring or loose connections. Inspect inverter board DC bus components. Contact utility if supply voltage is consistently low. Board retries after 15 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 measure supply voltage at outdoor unit for undervoltage.
- Check for intermittent communication faults caused by connectors, moisture, or damaged harnesses, and rule out check for undersized wiring or loose connections.
- 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.
