Carrier · Heat pump

LED1 MOC red LED1 (sizes 25-60)

Normal status Carrier Infinity 18VS 25VNA8

What the display is showing

Red LED1 on the inverter (MOC) board, sizes 25 to 60. Steady on means the DC filter and board high-voltage and discharge circuit are powered. Off means no power.

Applies to: Carrier Infinity 25VNA8/24VNA9 inverter board (sizes 25 to 60)

Models that show this code

7 models in Carrier Infinity 18VS 25VNA8

25VNA81325VNA82425VNA82525VNA83625VNA83725VNA84825VNA860

Other codes on the same units

98 High torque event
99 High torque lockout
LD1 MOC red LED LD1 (sizes 25-60)
LD5 MOC green LED LD5 (sizes 25-60)
LED3 MOC amber LED3 (sizes 25-60)
LED200 MOC red LED (sizes 13, 24B)
LED207 MOC amber LED (sizes 13, 24B)
COMM LED Green COMM LED on - 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.