A sudden breakdown occurred at the beginning of spring in Candiac
In mid-March, a resident of Candiac , on Montreal's South Shore , contacted us for an emergency service call regarding his Goodman wall-mounted heat pump . The unit, installed in the main living room, was no longer producing heat or cold air, despite an indicator light indicating normal operation. After several restart attempts and replacing the batteries in the remote control, the problem persisted.
At AirGreen , we know that a breakdown at the change of seasons is often linked to a faulty electronic board, a clogged coil, or a faulty temperature sensor. So we dispatched a certified technician to your location the same day.
Inspection and in-depth diagnosis
Upon our team's arrival, the diagnostic process began by checking the power supply and the wall control module . No voltage anomalies were detected. We then opened the front panel of the indoor unit to observe the general condition of the heat pump: clean filters, slightly dusty coils, but nothing visually alarming.
However, upon examining the main circuit board, we noticed a very slight burning smell and a heat mark near the fan relay. Upon testing, the relay was indeed found to be non-functional, preventing the fan from turning on despite the signal received from the controller.
Technical intervention: relay replacement and partial refurbishment
We completely replaced the ventilation relay and checked the temperature sensors (interior and evaporator), two essential elements for the heat pump's thermal regulation. At the same time, our technician carried out:
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Complete cleaning of the heat exchanger using a specialized biodegradable product.
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Antibacterial disinfection of the condensate tray .
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Checking the R410A refrigerant level and operating pressure.
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Tightening electrical connections to prevent arcing and voltage fluctuations.
After reassembly, the unit restarted perfectly, with stable airflow and a blowing temperature of 9°C in air conditioning mode.
Performance restored and customer satisfied
In less than two hours, the system was back up and running. The customer immediately noticed the difference: smooth blowing , quiet operation , and most importantly, energy efficiency that met Goodman's manufacturer specifications.
We took advantage of the intervention to recommend:
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Preventive cleaning of the coils at the start of each season.
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A complete annual inspection before winter, to prevent relay or electronic card failures.
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Maintaining a clear space around the wall unit for optimal air circulation.
AirGreen expertise at your service
At AirGreen , every repair is carried out in compliance with HVAC industry standards and RBQ and CCQ requirements. We combine accurate diagnosis, rapid repair and personalized advice to maximize the lifespan and energy performance of our customers' systems.
We work on all types of wall-mounted, central, and multi-zone heat pumps , and on the most common brands: Goodman, Gree, Fujitsu, Midea, Sharp, Lennox, Bosch, and Trane . Our teams cover the entire Greater Montreal area, including Montreal, Laval, Longueuil, the North Shore, and the South Shore .
Essential preventive monitoring to avoid future breakdowns
The owner has chosen to subscribe to our AirGreen annual maintenance program , including:
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Complete cleaning of the indoor unit and outdoor condenser.
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Checking refrigerant, condensate and electrical connections.
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General performance analysis (pressure, temperature, air flow).
Thanks to this plan, he not only ensures the proper functioning of his Goodman heat pump , but also optimized energy consumption throughout the year.
An intervention that illustrates AirGreen reliability
This case in Candiac perfectly demonstrates the strength of our approach: rapid response, technical expertise and attention to detail . Even a complex electronic problem can be effectively resolved with rigorous analysis and original parts.
The customer, reassured, told us that he had never seen his device operate so quietly since installation.