Repair of an Air Tempo wall-mounted air conditioner in Saint-Lambert
| Service | Repair | Unit | Wall-mounted air conditioner |
|---|---|---|---|
| Area | Saint-Lambert | Published | December 28, 2025 |
| Reading | 3 min | ||
Attachment 1 · job photo
A quick service call to restore a customer's comfort on the South Shore
At AirGreen , we regularly receive urgent calls related to broken wall-mounted air conditioners during hot weather. On this day, our team responded to a customer in Saint-Lambert , on the South Shore of Montreal , whose Air Tempo system refused to start.
Diagnosis: a wall-mounted air conditioner at a complete standstill
Upon our arrival, we carried out a complete inspection of the Air Tempo wall-mounted air conditioner installed in a south-facing living room, subject to significant sunlight. The customer had noticed for several days:
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lack of airflow,
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a flashing indicator light without the compressor starting,
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and a slight electrical smell when switched on.
After opening the front panel and inspecting the circuits, our certified technician quickly discovered a faulty main circuit board (PCB) . This part is essential to the proper functioning of the unit as it controls the indoor fan, the temperature sensor and communication with the outdoor unit.
Repair steps: precision and safety above all
We proceeded in the following steps:
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Power off and safe disconnection of the system.
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Disassembly of the front case to access the main board.
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Inspection of connectors and soldering for signs of overheating.
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Complete replacement of the original Air Tempo electronic module , delivered from our Montreal warehouse.
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Cleaning the air filters and interior turbine, often neglected during seasonal maintenance.
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Restart and calibrate the temperature and airflow sensors.
In less than two hours, the wall-mounted air conditioner was back to full functionality , showing smooth startup and a noise level that met the manufacturer's standards.
Result: comfort restored and prevention assured
After the repair, we performed a complete cooling cycle check and an Energy Efficiency Ratio (EER) measurement. Everything was in order. We also took the time to explain to the customer the importance of annual maintenance , including:
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dusting the interior coil,
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condensate check,
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and measuring the supply voltage to prevent future surges.
Thanks to this intervention, our client was able to once again enjoy fresh and constant air in his home, while optimizing the lifespan of his Air Tempo system.
Why trust AirGreen for your HVAC repairs
Our team of certified technicians operates throughout Montreal, Laval, Longueuil, the North Shore, and the South Shore to diagnose, maintain, and repair all types of heating, ventilation, and air conditioning (HVAC) equipment. Whether you own a Sharp, Gree, Fujitsu, Midea, Bosch, or Air Tempo model, we have original parts and proven expertise for each brand.
At AirGreen , each service call is handled with rigor and transparency: detailed diagnosis, explanation of the causes of the breakdown and guaranteed lasting repair.
Your comfort, our commitment
Are you noticing an abnormal noise, a flashing light, or a loss of performance from your wall-mounted air conditioner?
Contact our team today. We serve the entire metropolitan area with fast and efficient interventions , ensuring our customers optimal comfort throughout the year.
AirGreen – HVAC specialists in Montreal and the South Shore.
Professional repair, installation and maintenance of heat pumps and wall-mounted air conditioners.
