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LED3 MOC amber LED3 (sizes 25-60)
What the display is showing
Amber LED3 on the inverter (MOC) board, sizes 25 to 60. Steady on means the MOC switching supply is powering the AOC board. Blinking shows communication from the MOC to the AOC. Off means no power.
Applies to: Carrier Infinity 25VNA8/24VNA9 inverter board (sizes 25 to 60)
Models that show this code
9 models in Carrier Infinity 19VS 24VNA9
Other codes on the same units
- 99 High torque lockout
- LD1 MOC red LED LD1 (sizes 25-60)
- LD5 MOC green LED LD5 (sizes 25-60)
- LED1 MOC red LED1 (sizes 25-60)
- LED200 MOC red LED (sizes 13, 24B)
- LED207 MOC amber LED (sizes 13, 24B)
- COMM LED Green COMM LED on - communicating
- Charging mode Refrigerant charging mode (25VNA8/24VNA9, communicating)
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Source: Carrier 25VNA8/24VNA9 service manual, Variable Speed Drive LED Location and Description, p.26-27. Summarized in our own words; check the original manual for your model.
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.