Home » Some of Our Service Calls in Greater Montreal » Repair of a Midea wall-mounted heat pump in Brossard
Réparation d’une thermopompe murale Midea à Brossard
Reading time: 3'

Repair of a Midea wall-mounted heat pump in Brossard

A service call in the heat of summer

On a particularly hot day in Brossard , a customer contacted us about a problem with a Midea Aura series wall-mounted heat pump that was no longer blowing cold air. The display panel showed a temperature set to 18°C, but the air emitted remained lukewarm, even after several restart attempts.

At AirGreen , we understand that a loss of air conditioning performance can be caused by a variety of factors, including refrigerant leaks, clogged indoor fans, faulty electronic boards, and poorly calibrated temperature sensors. In this instance, our team dispatched a certified technician to conduct a comprehensive on-site inspection .

Precise diagnosis and initial observations

Upon arrival, our technician noticed several telltale signs:

  • The indoor unit was working, but no condensation was forming on the coils;

  • The fan was running, but at a lower speed than normal ;

  • No abnormal noise was heard from the outdoor compressor, indicating that the problem was probably with the indoor module .

When we opened the hood, we were able to see:

  1. Slight oxidation on the electrical connections of the blower motor;

  2. A dirty interior temperature sensor , distorting the ambient reading;

  3. A turbine slightly clogged with dust, reducing airflow.

AirGreen intervention: rigor and performance

Our team proceeded methodically:

  1. Complete cleaning of the evaporator coil and tangential fan using a specialized biodegradable product;

  2. Replacement of the defective temperature sensor (thermistor) with an original Midea part;

  3. Disassembly and cleaning of the ventilation motor , with tightening of the power terminals;

  4. Checking the condensate drain to prevent any leaks or water return;

  5. Restart and calibrate the system using a high-precision digital thermometer.

Once the intervention was completed, we carried out a series of tests: the outdoor compressor restarted normally, the airflow was powerful, and the temperature at the outlet of the indoor unit reached 11°C — proof of perfect operation.

Result: immediate comfort and restored efficiency

The customer, visibly relieved, immediately noticed the difference. In less than ten minutes, the room temperature had dropped by 3°C. The Midea Aura heat pump resumed its role seamlessly, with an almost imperceptible noise level.

This type of intervention highlights the crucial importance of regular preventative maintenance , especially before periods of high heat. A simple cleaning and annual check can prevent costly breakdowns and extend the life of the system.

AirGreen Tips for Wall-Mounted Heat Pump Users

For owners of Midea, Gree, Fujitsu or Sharp heat pumps, we recommend:

  • Clean the air filters every 4 to 6 weeks ;

  • Have the refrigerant level checked before summer;

  • Avoid obstructions in front of the wall unit (curtains, furniture, lampposts);

  • To have the probes and sensors inspected once a year;

  • Schedule a complete maintenance in spring or fall , before the heavy use seasons.

AirGreen: your HVAC partner in Brossard and throughout Greater Montreal

At AirGreen, we put our expertise to work for residential and commercial comfort throughout Montreal, Laval, Longueuil, the North Shore, and the South Shore . Our qualified technicians are trained on the leading brands on the market: Midea, Fujitsu, Gree, Sharp, Tosot, Goodman, Bosch , and many others.

Each intervention is carried out with precision, transparency and compliance with Quebec energy efficiency standards. Whether it's an urgent repair , preventive maintenance or a complete installation , you can count on our team for impeccable and lasting work.