A service call under the Montreal sun
On a hot summer afternoon in Rosemont–La Petite-Patrie , our AirGreen team was called to work on a Fujitsu Halcyon wall-mounted air conditioner , installed for several years on the facade of a brick residential building. The customer reported a complete system failure accompanied by an abnormal noise during startup attempts. A classic situation during periods of extreme heat, where the reliability of the HVAC system becomes essential to indoor comfort.
On-site diagnosis: a breakdown revealing wear and tear over time
Upon arrival, a visual inspection revealed a cracked outdoor compressor at the top cover and an oxidized power supply . This Fujitsu model, from the Halcyon DC Inverter range, is renowned for its durability, but like any wall-mounted system exposed to the sun and weather, it requires regular maintenance.
Our technicians carried out:
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A complete electrical check (voltage, continuity, internal fuses)
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A refrigerant pressure test to detect possible leaks
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An inspection of the fan and motor to identify any mechanical failures
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A check of the power wiring and insulated connections by sheath
Result: The compressor's start capacitor was faulty, causing incomplete startup and a characteristic metallic noise. A common failure on units more than 8 years old.
Repair and recommissioning
After safely disconnecting the power, we have:
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Replaced the start capacitor with a genuine Fujitsu part.
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Cleaned the condenser fan and lubricated the shaft.
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Repositioned the sun-hardened cooling cable insulation sheath.
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Checked the R410A refrigerant charge , which was found to be stable.
Once these operations were completed, we restarted the system: the compressor started normally, the air flow became constant again, and the customer immediately noticed a complete restoration of interior comfort .
AirGreen advice: plan ahead to avoid summer breakdowns
This type of intervention highlights the importance of preventative maintenance . At AirGreen, we recommend that all owners of Fujitsu , Gree , Midea , or Sharp systems have an annual inspection carried out before the warm season. Our technicians check, among other things:
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Operation of the compressor and the external fan
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The condition of the refrigeration circuit and insulation
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Electrical contacts and control board
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Condensate drainage and coil cleanliness
This maintenance not only prevents costly breakdowns, but extends the life of the air conditioner while maintaining optimal energy efficiency.
Recognized expertise in Montreal and the surrounding area
Our AirGreen team operates weekly in several neighborhoods in Montreal , Laval , Longueuil , on the North Shore and the South Shore , for the repair of HVAC systems of all makes and models. Whether it's a Fujitsu wall-mounted air conditioner , a Midea EVOX heat pump , or a Sharp multi-zone system , we guarantee an accurate diagnosis , rapid intervention and certified parts for each brand.
Final result: comfort restored and customer satisfied
At the end of our intervention, the system was operating at full capacity, delivering fresh and stable air. We left the customer with a comprehensive report and some recommendations for the next maintenance. A simple, yet essential repair, which perfectly illustrates our approach: diagnose rigorously, repair precisely, and ensure lasting comfort .
Is your Fujitsu air conditioner showing signs of weakness?
Call AirGreen , HVAC repair specialists in Montreal, Laval, Longueuil, and on the North and South Shores. Our qualified technicians provide fast and efficient service, regardless of the make or model.