HVACopediaCarrier · Air conditioner
96 DC under voltage lockout
What the control is telling you
Amber STATUS light flashes 96. Inverter DC voltage kept dropping too low (elevated from code 92). Type: System malfunction; reset: 2 hours.
Applies to: Carrier Infinity 19VS variable speed air conditioner 24VNA9 (AOC control + inverter)
Likely causes
- Low supply voltage (under about 197 VAC)
- Inverter internal damage
Test and repair steps
- Measure supply voltage at the outdoor unit; if low, contact the utility.
- Replace the inverter if supply voltage is normal.
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Source: Carrier 25VNA8 / 24VNA9 Service Manual, Table 6 Fault Code Actions, p.25. Summarized in our own words; check the original manual for your model.
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