LI LAA28030022 MOTOR COOLING FAN
Product Specifications
| LI | LAA28030022 |
The MOTOR COOLING FAN is the condenser cooling fan — an electrically driven axial fan assembly mounted behind the air conditioning condenser in the front bumper airflow zone that draws ambient air through the condenser core when vehicle speed is insufficient to provide adequate natural airflow for the required refrigerant condensation, ensuring the AC system maintains its designed cooling capacity at low vehicle speeds, during stationary idling, and in stop-start urban traffic where ram-air pressure through the front aperture cannot sustain the condenser heat rejection rate required at ambient temperatures above approximately 25°C. The assembly consists of a permanent-magnet brushed or brushless DC motor driving a multi-blade axial impeller mounted in a plastic shroud that frames the condenser face and channels the drawn airflow uniformly across the full condenser core surface; the shroud prevents airflow short-circuiting around the impeller diameter and improves fan efficiency by maintaining the pressure differential across the condenser. On most modern vehicles the condenser fan shares its mounting position with — or is mounted in tandem with — the primary coolant radiator fan, and both fans are controlled by the engine control module or a dedicated fan control module based on coolant temperature, AC system head pressure from the high-pressure pressure sensor, and vehicle speed; the AC condenser fan activates when the refrigerant high-side pressure rises above a threshold — typically 12–14 bar — that indicates the condenser is not rejecting sufficient heat, and is also activated pre-emptively whenever the AC compressor is engaged in ambient temperatures above approximately 20°C.
This unit — LI LAA28030022 — is manufactured to OEM-equivalent specifications: motor rated voltage and free-air current, blade diameter and pitch for the required airflow at rated speed, shroud outer dimensions and mounting clip positions for the condenser or radiator frame attachment, motor operating speed and airflow volume at rated voltage, electrical connector pinout for the fan control module harness, and impeller blade geometry for the noise and efficiency targets of the original design are matched to the original part. Supplied as a complete motor, impeller, and shroud assembly. Available wholesale from 30.97 USD, MOQ 10 pcs, production lead time 20-90 days.
Condenser cooling fans fail through motor brush and commutator wear after accumulated operating hours — in hot climates or in vehicles used predominantly in urban traffic, the condenser fan may accumulate more operating hours than the engine itself, and brush wear progressively increases motor resistance and reduces airflow until the fan cannot maintain adequate head pressure for AC operation; through bearing seizure from road debris ingestion or from water ingress into the motor body causing bearing corrosion; and through impeller blade fracture from stone chip impact or from debris drawn through the front bumper aperture, which both reduces airflow and introduces an imbalance vibration that accelerates bearing wear.
- Clean the condenser core face before installing the new fan assembly — the condenser fins accumulate road debris, cottonwood seeds, and insect deposits that reduce airflow through the core regardless of fan output; a new fan installed in front of a partially blocked condenser may not restore adequate AC performance even at its full rated airflow; use a soft brush or low-pressure water spray from the engine bay side to flush debris from the condenser fins before mounting the new fan shroud.
- Confirm the fan rotates in the correct direction before completing installation — axial fans are directional; a fan mounted with the motor wiring reversed draws air in the opposite direction through the condenser, expelling hot engine bay air toward the front of the vehicle rather than drawing cool ambient air rearward through the condenser; confirm the blade pitch orientation matches the OEM design and that the airflow direction arrow on the shroud (where present) points toward the engine bay; if no arrow is present, activate the fan briefly before securing the shroud and observe the airflow direction through the condenser with a sheet of paper.
- Ensure the shroud mounting clips and brackets are fully engaged on all attachment points — the shroud must seal the gap between the fan impeller diameter and the condenser frame to prevent airflow short-circuiting around the impeller; an unsecured shroud corner allows a significant fraction of the fan's output to recirculate from the discharge side to the suction side rather than passing through the condenser; confirm all clip positions are fully engaged and the shroud sits flush against the condenser frame perimeter.
- On vehicles with fan speed control via a resistor block or PWM fan control module, confirm the control method is compatible with the new motor — some replacement fan assemblies have different motor resistance characteristics that interact differently with the existing resistor block; a replacement motor with significantly lower resistance than the original may draw excessive current through the resistor block at low-speed settings, overheating the resistor; confirm the new motor's rated current matches the OEM specification before connecting to an existing speed control system.
- Protect the motor connector from water ingress after installation — the condenser fan motor operates in the direct path of rain water, pressure washer jets, and road spray entering through the front bumper aperture; ensure the wiring connector is fully engaged and that the connector housing's seal is intact; route the cable clear of any sharp edges on the condenser frame that could chafe the insulation during vibration; apply dielectric grease inside the connector if the original was not sealed.
- Install the new MOTOR COOLING FAN (LI LAA28030022), reconnect the electrical connector, activate the AC and confirm the fan starts immediately when the AC compressor engages, confirm the fan reaches full speed within 5 seconds of activation, measure current draw with a clamp meter to confirm it matches the OEM rated current, activate the AC in stationary idle on a warm day and confirm the refrigerant high-side pressure stabilises below the cut-out threshold, and check for impeller clearance to surrounding components before returning the vehicle to service.
| Part | Reason for Combined Replacement |
|---|---|
| Fan Relay and Resistor Block Speed control components — OEM ref. varies | The fan relay and resistor block that control the condenser fan's activation and speed have been switching and loading the failed motor's increasing current draw throughout the motor's degradation period. A relay that has been switching above-rated current from a motor with failing brushes accumulates arc damage on its contacts; a resistor block that has been dissipating heat from a high-resistance motor circuit may have cracked a resistor element. Replace both control components simultaneously with the fan motor to ensure the new motor's correct rated current is switched and regulated cleanly from its first activation cycle. |
| AC Condenser OEM ref. varies by vehicle | A condenser fan that has failed from stone chip impact damage to the impeller may have also allowed larger stones to reach and damage the condenser core fins and tubes directly behind the impeller. With the fan removed for replacement, inspect the condenser face for stone chip damage — dented or crushed fin sections and refrigerant leaks at damaged tube positions; a condenser with physical damage to its core requires replacement simultaneously with the fan to restore both the heat rejection area and the system's refrigerant integrity. |
| Cabin Air Filter Carbon combination filter recommended | A vehicle whose AC system has been performing poorly from a failed condenser fan has been operating the compressor at elevated head pressures, reducing the evaporator's cooling efficiency and potentially allowing higher-temperature air to enter the cabin. With the AC system performance restored by the new fan, replacing the cabin air filter simultaneously ensures the refreshed AC system is delivering filtered air at maximum efficiency — a loaded cabin filter reduces the evaporator airflow that the restored condenser cooling capacity has made available. |