What It Means
System locked out for 2 hours due to repeated inverter DC under-voltage faults.
Bryant Heat Pump
Bryant Heat Pump Error Code 96
Troubleshooting guide for the Bryant Heat Pump system fault 96.
Possible Causes
- Persistent low supply voltage or loose wiring.
- Defective inverter DC bus circuitry.
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
VDC Under Voltage Lockout. VDC under-voltage lockout active for 2 hours.
All Recorded Causes
Diagnose root cause of repeated VDC under-voltage faults. Check supply voltage and wiring. Inspect inverter board DC bus. Allow lockout to expire (2 hours) or power cycle after root cause is corrected.
Verify Before Replacing Parts
- Confirm the exact Bryant model family and heat pumps 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 diagnose root cause of repeated VDC under-voltage faults.
- Check for intermittent communication faults caused by connectors, moisture, or damaged harnesses, and rule out check supply voltage and wiring.
- 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.
