A Strategic Check-Up to Maintain Residential Comfort
At AirGreen, we are regularly called to service wall-mounted heating and cooling systems, especially in residences located on the North Shore, where temperature fluctuations demand high-performance and well-maintained equipment. It was in Sainte-Thérèse, in the heart of a peaceful residential neighborhood, that we were asked to handle a service call for a Gree wall-mounted heat pump installed in a spacious and bright living room.
Service Call Context: Diminished Performance
The client had noticed that their Gree heat pump remained stuck at 20°C, with no real change in temperature despite several attempts to adjust it via the remote control. Additionally, the airflow seemed weaker, and the ambient temperature didn’t match the settings displayed. No error messages appeared, which suggested a subtle internal malfunction that needed attention.
First Step: Complete System Check
Upon arrival, our certified technicians conducted a thorough inspection of the indoor unit. Here are the main steps we took:
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Testing the remote control and infrared sensors: normal operation.
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Measuring the airflow temperature: a significant difference between the displayed and actual temperature.
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Inspecting the air filter: slightly obstructed, requiring a thorough cleaning.
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Checking the heat exchanger: no major blockages, but a slight accumulation of dust on the fins.
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Testing heating and cooling modes: functional but slightly delayed.
Diagnosis: Miscalibrated Ambient Temperature Sensor
After ruling out visible mechanical causes, our technicians identified a calibration issue with the ambient temperature sensor inside the wall unit. While rare, this type of failure can cause incorrect readings of the surrounding temperature, leading the system to maintain an inappropriate temperature setting.
We performed a full reset of the indoor unit’s microcontroller, followed by a manual recalibration of the sensor. This technical step allowed us to realign the internal readings with the actual ambient temperature measured by our professional tools.
Cleaning and Preventive Maintenance
Before completing the service, we performed a complete cleaning of the filter, wall unit, and visible ducts, ensuring optimal air distribution. Regular cleaning is essential to prevent:
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Dust accumulation that can affect indoor air quality.
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Increased energy consumption.
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Premature wear on internal components.
Final Result: Restored Efficiency and Satisfied Customer
Once the heat pump was back in service, the airflow proved stronger and, most importantly, better regulated. The indoor temperature stabilized according to the chosen settings. The client immediately noticed the improvement, especially in terms of overall comfort in their living room.
We took the time to explain the issue, as well as the best practices to follow:
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Clean filters every 2 months.
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Schedule annual professional maintenance.
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Don’t ignore subtle symptoms (unusual noise, weak airflow, inconsistent temperatures).
Why Choose AirGreen for a CVAC Service Call in Sainte-Thérèse?
Our team is specialized in the repair of Gree wall-mounted heat pumps and other leading brands, whether for residences on the North Shore, in Montréal, Laval, or on the South Shore. Every service call is taken seriously, with precise diagnostics, long-lasting solutions, and an approach that’s always transparent and respectful.
AirGreen Expertise: Rigorous Technical Service with a Personal Touch
This service call in Sainte-Thérèse is a perfect example of our commitment to the long-term performance of the CVAC equipment we maintain. By quickly identifying an issue with the internal electronics, we prevented a more severe breakdown and allowed the client to fully enjoy their thermal comfort.
At AirGreen, we believe that great service involves listening, technical accuracy, and thorough follow-up.