An urgent service call for an overloaded appliance
At AirGreen , we were called in to repair a Fujitsu wall-mounted air conditioner in Sainte-Julie , on the South Shore of Montreal . The customer, the owner of a single-family home, had noticed for several days that the indoor unit was making an irregular noise and was no longer cooling properly . The control screen was flashing, indicating a fan motor overload error code .
Our rapid response team arrived the same day to prevent any worsening of the problem, which is particularly common during hot weather.
Accurate diagnosis of Fujitsu system
After removing the top panel and exposing the air filters , our technicians immediately noticed a significant buildup of dust and pollen , partially obstructing the airflow. This lack of circulation caused the fan motor to overheat and significantly reduced thermal efficiency.
Our checks revealed:
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A variable speed blower motor in electrical overload .
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A control board showing signs of excessive heat .
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Air filters saturated and not cleaned for over a year .
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A slight condensate leak at the lower tray.
Complete repair and refurbishment
The intervention was planned and executed according to AirGreen standards:
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Complete disassembly of the front cover and extraction of the blower module.
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Clean the motor and fan blades using a specialized non-corrosive product.
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Replaced the motor start capacitor , which had dropped in capacity to 3 µF from 5 µF.
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Complete cleaning of filters and condensate tray , including disinfection with stabilized peroxide.
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Check electrical connections and tighten terminal blocks.
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Complete system test : airflow measurement, inrush current check, discharge temperature control (outlet at 11°C).
After reassembly, the Fujitsu wall-mounted air conditioner restarted without any abnormal noise and regained its full cooling power . In less than 15 minutes, the room temperature dropped from 27°C to 22°C , confirming the success of the intervention.
Results and maintenance recommendations
The customer, relieved to find optimal comfort, was advised on good preventive maintenance practices :
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Clean filters every 4 to 6 weeks , especially during the peak summer season.
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Schedule an annual professional maintenance to clean the turbine and check the refrigeration circuit.
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Avoid obstruction of the air outlet by keeping the space around the unit clear.
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Install a surge protector to prevent electrical damage to Fujitsu electronic components.
We have also added additional protection for the condensate tray to prevent overflows in the event of a drain blockage.
AirGreen expertise in Sainte-Julie and on the South Shore
Fujitsu wall-mounted air conditioners are renowned for their efficiency and reliability, but their variable-speed blower motor requires meticulous maintenance to maintain optimal performance. At AirGreen, we are directly trained on Fujitsu, Gree, Sharp, Midea, and Lennox systems, allowing us to respond quickly and accurately , whatever the problem.
Our RBQ and CCQ certified technicians ensure work that complies with current standards and provides transparent service with no hidden fees. We cover all of Greater Montreal, Laval, Longueuil, the North Shore, and the South Shore , with some of the fastest response times in the industry.
AirGreen: Your Trusted HVAC Partner
Every service call is an opportunity for us to demonstrate our thoroughness, professionalism, and commitment to our customers' comfort . A minor breakdown left unaddressed can often turn into a major problem; that's why we recommend an annual inspection of all residential HVAC systems .
Thanks to our preventative approach and technical expertise, your comfort is in good hands — 365 days a year.
AirGreen: Repair, maintenance and installation of HVAC systems in Montreal, Laval, Longueuil and on the South Shore.