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Lennox 98M39 1/3 HP Variable Speed Condenser Fan Motor 208-230V 1-Phase

Rating:
5 5 4
4  Reviews Add Your Review
Special Price $890.11 Regular Price $988.03
In stock
SKU
98M39
The Lennox 98M39 Variable Speed Condenser Fan Motor is an energy-optimized replacement part meant for efficient operation and control of the airflow in Lennox air conditioning systems. This ECM is highly efficient and operates at a low noise level. It is capable of varying its fan speed between 0 and 820 RPM depending on the cooling requirement. The airflow control assigned to the condenser coil is achieved to generate superior heat rejection by the motor, thereby improving the efficiency of the air conditioning system. The 1/3 HP motor is sufficient to ensure proper air circulation within the room. The vertical mounting position and stud mounting type make installation easy within your air conditioner.
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Specifications

  • Voltage: 208-230V
  • Weight: 12.6lbs
  • Horsepower: 1/3 HP
  • Measure: Unit
  • Type: ECM
  • Diameter: 5.6 Inch
  • Amperage: 2.8 AMPs
  • Bearing Type: Ball
  • Phase: 1 Phase
  • Frequency: 60Hz
  • Shaft Length: 3.92 Inch
  • Speed: Variable
  • Frame Size: 48
  • Motor Rotation: CCW from lead end
  • Revolutions Per Minute: 0-820 RPM
  • Motor Mounting Position: Vertical
  • Motor Mounting Type: Stud

Condenser sections use dedicated fan motors to drive the fan that moves air across the outdoor coil during equipment operation. The Lennox 98M39 is a variable-speed ECM condenser fan motor that provides the mechanical drive required for the associated condenser fan. Its electronically controlled operation allows the motor to adjust fan speed according to the equipment's operating requirements.

ECM Variable-Speed Operation:
An ECM motor uses electronic commutation to control motor rotation and adjust shaft speed during operation. This variable-speed control allows the condenser fan motor to change its mechanical output according to the equipment's operating requirements rather than remaining at one fixed speed.

Condenser Fan Mechanical Drive:
The motor converts electrical input into mechanical shaft rotation that drives the associated condenser fan. As the ECM control changes motor speed, the mechanical drive delivered to the fan can also change to support the airflow requirements of the condenser section.

Replacement Guidelines:
Replacement may be appropriate when the existing condenser fan motor no longer drives the fan or develops irregular shaft rotation. For the Lennox 98M39, compare the existing part number with the applicable equipment requirements and verified specifications before ordering.

Common Failure Symptoms:

  • The motor fails to start when the condenser fan is required.
  • The shaft develops inconsistent rotation.
  • The motor produces unusual sounds during use.
  • Noticeable vibration develops while running.
  • The motor stops unexpectedly.

Equipment Compatibility:
The Lennox 98M39 should be selected for condenser equipment requiring the corresponding ECM variable-speed motor configuration. Before purchasing, confirm the existing part number, 1/3HP power requirement, 208-230V electrical requirement, 60Hz frequency, 1-Phase configuration, 0-820 RPM speed range, and 48 frame requirements.

Technical Specifications:
Part Identification:
Brand: Lennox
Part Number: 98M39
Product Type: Variable Speed Condenser Fan Motor

Electrical:
Voltage: 208-230V
Phase: 1-Phase
Frequency: 60Hz
Horsepower: 1/3 HP

Mechanical:
Speed: 0-820 RPM
Frame: 48

Control:
Motor Technology: ECM
Speed Type: Variable Speed

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Product Questions (7)
Customer Questions
What maintenance is required for the Lennox 98M39 Condenser Fan Motor?

Regularly inspect the motor for dust, debris, and corrosion, cleaning as needed to ensure optimal airflow. Lubricate bearings if applicable, check electrical connections for tightness, and verify the motor spins freely. Turn off power before servicing to prevent injury. Preventive maintenance extends longevity and avoids unexpected failures.

What are common issues with the Lennox 98M39 Condenser Fan Motor?

  • Motor fails to start or runs intermittently.
  • Excessive noise or vibration during operation.
  • Overheating under load.
  • Reduced airflow affecting system efficiency.

What type of condenser fan motor is the Lennox 98M39?

The Lennox 98M39 is an ECM variable-speed condenser fan motor.

How is an ECM variable-speed motor different from a fixed-speed condenser fan motor?

An ECM variable-speed motor can change shaft speed during operation, while a fixed-speed motor operates at a designated fixed speed.

What does the variable-speed designation indicate for the 98M39?

The variable-speed designation indicates that the motor can operate across its 0-820 RPM range rather than remaining at one fixed speed.

Why does the exact 98M39 part number matter when sourcing this motor?

The part number provides the specific product reference needed to distinguish the 98M39 from other condenser fan motor configurations.

What should be confirmed before purchasing the 98M39?

Confirm the existing part number and compare the required motor configuration with the voltage, horsepower, speed, frame, and other applicable equipment requirements.

Installation Steps

Step1: Turn off power to the condenser unit at the breaker to prevent electrical shock.

Step2: Remove the fan guard or access panel to reach the motor.

Step3: Disconnect all wiring and note the connections for reinstallation.

Step4: Loosen mounting bolts and carefully remove the old fan motor and blade.

Step5: Install the new motor and reattach the fan blade securely.

Step6: Reconnect all wiring according to your notes.

Step7: Replace the access panel, restore power, and test for proper rotation and variable speed operation.