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Air Conditioner Outdoor fan motor and blade: What It Does and Signs It's Failing

The large propeller fan in the outdoor unit and the motor behind it. It pulls air through the outdoor coil to dump heat in cool mode and pick it up in heat mode.

How it works

A DC motor run by the outdoor board turns the blade at variable speeds. If the board doesn't see the expected speed, it shuts down and sets a code.

Signs it is failing

• The outdoor fan doesn't spin while the compressor runs
• Blade hits ice, snow or debris
• High-pressure or overheating codes in summer
• Outdoor fan codes

Outdoor fan codes and some high-pressure and overheating codes come from this fan. LG says to check for debris or snow first.

Can you replace it yourself?

With the breaker and outdoor disconnect off, clear leaves and snow from around the unit, let any ice melt on its own instead of chipping at it, and check that the blade turns freely by hand. If it's seized, don't force it. The motor is wired into the outdoor high-voltage compartment, so replacement is tech work.

Buying the right part

Outdoor motors are model-specific DC units. The tech will order the right one.

Error codes linked to the outdoor fan motor and blade

• E7Outdoor fan motor faultDaikin
• L4Inverter heat sink overheatingDaikin
• 65IPM (power module) protectionFujitsu
• 94Compressor overcurrent (trip detection)Fujitsu
• 97Outdoor fan motor errorFujitsu
• A3Compressor temperature too highFujitsu
• E1High pressure protectionGree
• L3Outdoor fan airflow faultGree
• CH67Outdoor fan blocked or faultyLG
• CH61Unit overheatingLG
• EC 07Outdoor fan speed out of controlMidea
• PC 02Compressor or power module overheatingMidea
• PC 08Over-current protectionMidea
• U1 / UdHigh pressure or overheat protectionMitsubishi Electric
• U8Outdoor fan stoppedMitsubishi Electric
• E458Outdoor fan errorSamsung

Last reviewed 2026-10-19.