In the peaceful residential area of the Town of Mount Royal, one of our loyal clients reached out to us urgently for a malfunction with their Sharp wall-mounted heat pump, model Eco Inverter with Plasmacluster technology. Installed on an exterior brick wall, this normally reliable unit had stopped performing optimally, putting the indoor comfort of the home at risk. At AirGreen, our expertise in wall-mounted heat pump repair in Montreal, Laval and the North Shore allowed us to respond quickly and effectively to resolve the issue.
An unusual performance alert: first signs of a problem
When the client contacted us, they reported a noticeable drop in heating performance, with the fan running but never reaching the desired temperature. No error code was showing on the remote control, which made the initial diagnosis more complex.
Upon our arrival, our certified HVAC technician performed a thorough diagnosis:
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Checked the R-32 refrigerant pressure in the system.
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Inspected the outdoor temperature sensor.
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Analyzed the Sharp electronic control module.
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Verified the electrical connection, including the DuraSwitch cut-off box visible in the installation.
A compressor-related issue: targeted intervention
The diagnosis revealed that the Inverter compressor was no longer starting properly. The power supply voltage was normal, but the control module wasn’t receiving the proper signals to initiate the heating cycle. The root cause: a defective secondary electronic control board.
Here are the steps taken during the repair by AirGreen:
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Replacement of the secondary control board.
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System reset of the Sharp unit via software calibration.
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Pressure test of the R-32 refrigerant and slight adjustment.
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Complete inspection of the drainage and partial cleaning of the outdoor unit, especially the fins obstructed by fine particles.
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Interior filter cleaning (even though it wasn’t dirty, we always include this check in our complete service).
A quick, professional, and reassuring intervention
The entire job was completed in less than 2 hours, including part replacement, restart testing, and customer explanation on maintenance tips to extend the lifespan of their Sharp heat pump.
What our client particularly appreciated:
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The clarity of the technical explanations provided.
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The clean job, with no marks on the walls or exposed wiring.
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Sticking to the scheduled time.
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The availability of replacement parts thanks to our optimized inventory for Sharp wall-mounted heat pump repairs in the Montreal area.
Why Sharp Eco Inverter heat pumps require specialized expertise
The Eco Inverter series with Plasmacluster technology by Sharp is highly appreciated for its energy efficiency and purified air quality. However, these models feature advanced electronic components, especially for Inverter current management and ionized air purification control.
Our technicians trained in Sharp technology are capable of:
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Reading diagnostics even when there’s no clear error message.
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Handling high-density electronic components without damaging them.
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Performing preventive maintenance that adheres to the manufacturer’s specifications.
Maintenance recommendations to extend system life
At the end of the service, we advised the client to:
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Have the unit inspected twice a year (before winter and in spring).
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Clean the indoor filters every 4 to 6 weeks.
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Prevent snow or fallen leaves from accumulating around the outdoor unit.
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Avoid pressure washing, which can damage electronic circuits.
AirGreen’s service in Town of Mount Royal: peace of mind guaranteed
This service call in the Town of Mount Royal is a concrete example of our commitment to high-quality HVAC service, our responsiveness, and our ability to solve complex issues quickly and reliably.
Whether you’re in Montreal, Laval, Longueuil, on the North Shore or South Shore, trust AirGreen for:
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Repairing your wall-mounted heat pump of any brand (Sharp, Gree, Fujitsu, etc.).
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Fast troubleshooting in case of heating or cooling failure.
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Replacing electronic boards, sensors, compressors, fans.
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Certified preventive maintenance by HVAC experts recognized across Greater Montreal.
AirGreen: expertise, transparency, and reliability at the heart of every HVAC service
This client experience illustrates our ability to intervene efficiently on sophisticated systems, while ensuring a smooth, professional, and reassuring experience for homeowners. Our reputation is built on hundreds of similar service calls across Greater Montreal, each handled with a consistent commitment to technical excellence and customer service.