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Réparation d’un climatiseur Sharp à Rosemont–La Petite-Patrie
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Sharp Air Conditioner Repair in Rosemont–La Petite-Patrie

A service call for a Sharp compressor hanging from the front

At AirGreen , we were recently called upon to repair a Sharp Eco Inverter air conditioner installed high up on the facade of a residential building in Rosemont–La Petite-Patrie, Montreal . The outdoor unit, mounted on a galvanized steel wall bracket , was experiencing an intermittent start-up problem with the main fan, affecting the overall performance of the system.

Initial diagnosis: an intermittently inactive fan

The customer contacted us after noticing that their system was no longer producing cold air consistently , despite the normal display on the remote. Upon arrival, we found:

  • A compressor that started normally , but whose external fan stopped randomly.

  • Slight overheating at the condenser level , a sign that the air flow was insufficient.

  • No major error codes, which indicated an electronic rather than mechanical fault .

Steps of detailed diagnosis

Our technicians carried out a complete analysis of the electrical and control circuit :

  1. Measurement of voltages on the inverter board and on the ventilation motor.

  2. Checking the starting capacitor , the nominal value of which was visibly reduced.

  3. Checked the motor power wiring , which showed slight oxidation.

  4. Inspection of the motor connector , the tightening of which was weakened by vibrations.

After a series of tests, we confirmed that the fan control board was experiencing voltage drift, causing the motor to behave erratically.

Repair and refurbishment of the ventilation module

We have undertaken the following repairs:

  • Complete replacement of the starting capacitor with an original Sharp model.

  • Cleaning and anti-corrosion treatment of electrical connectors.

  • Inverter control board repair , including overhaul of relay module and power tracks.

  • Applying a protective insulating coating to the board to prevent future moisture infiltration.

Once the repair was completed, the fan resumed smooth operation without any jerks or unexpected stops.

Performance testing and final validation

After 30 minutes of continuous operation, measurements confirmed optimal performance :

  • Indoor/outdoor temperature differential: 10.8°C .

  • Power consumption stabilized at less than 900 W in cooling mode .

  • Reduced noise level, proof of the good balance of the engine.

The customer immediately noted a return of thermal comfort and a reduction in noise compared to the previous situation.

Maintenance advice given to the customer

We reminded the owner of some good maintenance practices to extend the life of his Sharp air conditioner:

  • Clean the internal filters every 4 to 6 weeks.

  • Visually check that nothing is obstructing the fins of the outdoor condenser .

  • Schedule an annual professional maintenance to check pressures, refrigerant gas and cleanliness of electronic boards.

AirGreen expertise in the service of reliability

This intervention illustrates the expertise of our AirGreen HVAC technicians in Montreal, who are able to quickly diagnose complex problems affecting Sharp Eco Inverter systems. Thanks to our rigor and our in-depth knowledge of Plasmacluster technologies, we ensure the long-lasting, quiet and energy-efficient operation of each unit.

We operate throughout Greater Montreal — Laval, Longueuil, North Shore and South Shore — to offer professional HVAC repair service, focused on quality, transparency and performance.

Conclusion

With this Sharp air conditioner repair in Rosemont–La Petite-Patrie , AirGreen once again demonstrates its ability to bring high-tech systems back to life . Our mission remains the same: to guarantee constant and lasting comfort , while extending the life of your HVAC equipment.