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

Repair of a Zephyr wall-mounted heat pump in Verdun

A quick service call in a typical Montreal duplex

At AirGreen , we were recently called to repair a Zephyr wall-mounted heat pump installed on the rear facade of a duplex in Verdun , an area where indoor comfort is paramount, summer and winter. The customer contacted us after noticing that their outdoor unit was no longer starting, despite a working remote control and an illuminated interior light.

Initial diagnosis: an intermittent electrical failure

Upon our arrival, our technician performed a complete system diagnostic. The Zephyr compressor would not turn on, and the outdoor fan would remain inactive.
After verification:

  • The power supply to the circuit breaker was stable.

  • The starter relay showed signs of wear and oxidation.

  • The outdoor unit control board showed an anomaly on the control voltage.

So we've isolated the likely cause: a faulty circuit board , often caused by moisture infiltration into poorly sealed enclosures or voltage fluctuations.

Repair and recommissioning

Since the Zephyr wall-mounted heat pump is a compact and efficient model, we were able to carry out the repair on site without completely replacing the module.
Steps of our intervention:

  1. Power off and secure the area.

  2. Disassembly of the cover and extraction of the control board.

  3. Cleaning and drying the connectors.

  4. Replacement of damaged components (built-in fuse and starter relay).

  5. Complete system reset and reboot tests.

Once the system was powered back up, the heat pump restarted immediately. We checked the compressor inrush current , R-410A refrigerant pressure , and the indoor discharge temperature . All parameters were within the manufacturer's specifications.

A preventive maintenance check

As always, after the repair, our team offered a complete maintenance :

  • Cleaning the outdoor coil.

  • Checking the condensate drainage.

  • Inspection of cables and sheaths.

  • Checking the internal filter.

The customer, satisfied with the service, also decided to add his address to our annual AirGreen maintenance program , guaranteeing the good performance and longevity of his wall-mounted heat pump.

AirGreen Expertise: Precision, Safety and Sustainability

Zephyr systems are renowned for their reliability, but like all HVAC equipment, they require regular maintenance. In Verdun, climatic conditions—humidity, temperature fluctuations, and proximity to the river—can increase corrosion and affect electronic boards.

At AirGreen, we adapt each intervention to the reality of the building:

  • Accurate diagnostics thanks to our electronic instruments.

  • Genuine parts to maintain performance.

  • Follow-up after repair to ensure everything is working perfectly.

Why choose AirGreen for your HVAC repairs in Montreal and Laval

Our teams travel throughout Greater Montreal, on the North Shore as well as the South Shore , to offer:

  • Fast and lasting repairs .

  • A transparent diagnosis before any intervention.

  • Personalized and professional customer service .

We work on all major brands of heat pumps and air conditioners, including Zephyr, Gree, Fujitsu, Sharp, Midea, and Hitachi .

Conclusion: comfort found in Verdun

After our visit, the client's Zephyr wall-mounted heat pump is operating at full capacity again, ensuring a stable temperature and optimal energy consumption. This type of intervention perfectly illustrates AirGreen's commitment: rigorous, fast, and efficient service , in the heart of Montreal's residential neighborhoods.