A meticulous technical intervention by AirGreen
At AirGreen , we pride ourselves on restoring the performance of our customers' HVAC systems, no matter how complex the problem. This Midea wall-mounted air conditioner repair in Sainte-Julie perfectly illustrates the precision and method used by our technicians during a complete disassembly and thorough diagnosis.
Background to the call
The client, the owner of a recent condo in Sainte-Julie, contacted us after noticing that his Midea air conditioner was blowing lukewarm air despite being set to 18°C. No error code appeared on the wall unit, but a slight irregular noise could be heard each time the compressor started.
Our team quickly went on site to carry out a complete diagnosis.
Initial diagnosis: search for the cause of the lack of cold
Upon arrival, the Midea wall-mounted air conditioner displayed continuous operation without alternating cycles, a clear sign of a loss of efficiency in the refrigeration circuit .
The first checks focused on:
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The outlet airflow is low despite a working fan;
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Intermittent noise from the fan motor ;
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And the temperature of the refrigeration pipes , which remained lukewarm.
After opening the front panel, our technicians observed a significant accumulation of dust on the evaporator , coupled with signs of persistent moisture . This combination indicated a partial obstruction of the condensate drainage , which may have affected the temperature sensor and caused erratic system behavior.
Complete disassembly and deep cleaning
To correct the problem, a complete disassembly of the indoor unit was undertaken. This crucial step provided access to:
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The evaporator for high pressure cleaning with biodegradable solution;
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The fan motor (crossflow) , disassembled then greased;
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The drainage tray , fully rinsed and disinfected;
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Temperature sensors , tested and recalibrated.
This type of intervention requires in-depth expertise and specific precautions to prevent water from entering the electronic circuits. The refrigeration pipes were carefully repositioned and re-insulated.
Checking the refrigeration circuit
Once the cleaning was completed, our team began checking the refrigeration circuit . Using a digital pressure gauge, an undercharge of R410A refrigerant was confirmed.
The following steps were then carried out:
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Leak detection using dry nitrogen and electronic detector.
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Repair of the flare connection at the wall.
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Complete vacuuming of the system.
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Accurate refrigerant charging according to Midea specifications.
After these steps, the air outlet temperature dropped to 7.8°C , proof of fully restored performance.
Final result and recommendations
The Midea wall-mounted air conditioner has returned to optimal performance and quiet operation . The customer was impressed by the cleanliness of the work and the complete refurbishment of the unit, now ready to face the summer heat.
We also took the time to explain some good maintenance practices :
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Clean air filters every 4 to 6 weeks.
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Avoid blocking airflow with furniture or curtains.
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Perform annual preventative maintenance to maintain energy efficiency and prevent leaks.
AirGreen expertise: rigor, cleanliness and efficiency
This type of intervention demonstrates the importance of entrusting your HVAC system to qualified professionals. At AirGreen , we combine modern diagnostic tools , ongoing training on Midea, Fujitsu, Gree and Goodman technologies, and a constant commitment to customer satisfaction .
Whether in Montreal, Laval, the North Shore or the South Shore , we offer fast, precise and durable service - each repair aims to extend the useful life of the equipment while ensuring maximum comfort.
Conclusion
Thanks to AirGreen's expertise, this Midea wall-mounted air conditioner in Sainte-Julie has regained all its power and reliability. A comprehensive intervention, combining technical rigor and attention to detail, which perfectly illustrates our mission: to offer high-performance, durable, and impeccably executed HVAC solutions .