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Carrier · Air conditioner

76 Fan inverter lockout

High severity Carrier Infinity 19VS 24VNA9

What the control is telling you

Amber STATUS light flashes 76. The outdoor fan kept failing to start (elevated from code 61). Type: System malfunction; reset: 2 hours.

Applies to: Carrier Infinity 19VS variable speed air conditioner 24VNA9 (AOC control + inverter)

Likely causes

  • Fan blade bent, out of balance, rubbing or iced up
  • Fan motor wiring or connector problem
  • Failed fan motor
  • Damaged inverter

Test and repair steps

  1. Check the fan blade, its clearance and any ice build-up.
  2. Check fan motor connectors and harness.
  3. Replace the fan motor, then the inverter if the fault continues.

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Source: Carrier 25VNA8 / 24VNA9 Service Manual, Table 6 Fault Code Actions, p.22. Summarized in our own words; check the original manual for your model.

Homeowner looking at this code? See what it means for you and when to call a technician.

For licensed technicians. Gas, electrical and refrigerant work must be done by a qualified, licensed person. Shut off power and gas before servicing, never bypass a safety control, and follow the manufacturer’s manual for the exact model; it and local codes always take priority. HVACopedia is not affiliated with any manufacturer; brand and model names only identify the equipment.