A precise and rapid service call: AirGreen intervention in Sainte-Julie
At AirGreen , we were recently called to Sainte-Julie for a repair of a Fujitsu wall-mounted air conditioner that was showing poor cooling performance . The customer, the owner of a renovated condo, had noticed for several days that the ambient temperature remained high despite continuous operation of the unit.
Initial diagnosis: loss of efficiency and faulty internal sensor
Upon arrival, our certified technician performed a complete inspection of the Fujitsu wall unit. The discharge temperature was significantly higher than normal, indicating a lack of heat transfer . Using an electronic pressure gauge and a probe thermometer, we confirmed that the refrigerant pressure was stable , ruling out a leak.
Analysis of the control circuit revealed a faulty evaporator temperature sensor , which was causing an erroneous reading that prevented the compressor from properly regulating cooling power.
Repair carried out: sensor replacement and calibration
After disconnecting the power supply and removing the front panel of the unit, we replaced the original Fujitsu NTC sensor with a certified equivalent part. The entire system was then recalibrated and tested under real-world conditions. In less than 20 minutes of operation, the exhaust air temperature dropped from 19°C to 9°C , demonstrating restored performance.
We also cleaned the filter and evaporator coil, which are often clogged with accumulated dust, to ensure optimal airflow and prevent future overheating.
Result: restored comfort and maximum performance
The customer immediately noticed a noticeable improvement in the air conditioning. The wall-mounted unit was once again operating quietly, with a stable cooling cycle and energy efficiency that met Fujitsu specifications.
As always, our team took the time to explain good maintenance practices to the customer:
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Clean the filters every two weeks during periods of heavy use.
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Avoid setting the temperature too low (between 23°C and 25°C is ideal).
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Perform annual preventative maintenance to check gas pressure and electrical connections.
AirGreen expertise in Sainte-Julie and throughout the South Shore
This intervention perfectly illustrates AirGreen 's approach: a rigorous diagnosis , a lasting repair and a transparent customer relationship . Our technicians cover the entire South Shore , including Boucherville, Saint-Bruno, Saint-Lambert, Longueuil and Brossard , for fast and professional HVAC repair services.
Whether it's for a Fujitsu wall-mounted air conditioner , a Midea heat pump or a Gree multi-zone system , we guarantee precise interventions, compliant with RBQ and CCQ standards, with original parts and a constant concern for quality.