Rapid intervention for a heat pump that has completely stopped
A customer in Pointe-Claire , on Montreal's West Island , contacted us after noticing that their Goodman wall-mounted heat pump was no longer starting at all. Neither in heating nor cooling mode—the compressor was completely silent, accompanied by a slight flashing of the indicator light on the indoor unit.
This type of failure, although common on older systems, requires accurate diagnosis to avoid unnecessary replacements. At AirGreen , we always favor a methodical approach: understanding the cause before acting.
On-site inspection and diagnosis
When we arrived, the outdoor unit—securely mounted on a galvanized steel wall bracket—showed no signs of life. So we began with a series of checks:
-
Supply voltage : correct, 240 volts at the circuit breaker input.
-
Wiring inspection : no signs of short circuit or overheating visible.
-
Continuity test on the control board : no signal sent to the starter relay.
-
Check R-410A refrigerant pressures : normal, which rules out a leak problem.
The diagnosis confirmed a faulty external control board —a known problem on some Goodman series when the system experiences significant voltage fluctuations or fouling of the electronic module.
Repair: replacement and recalibration
Once the cause was identified, we undertook the complete repair of the system:
-
Replacement of the main control board with an original Goodman module, compatible with the Inverter wall series.
-
Checking and cleaning the condenser fan , the blades of which showed traces of dirt and light corrosion.
-
Test the start relay and compressor to ensure proper power transfer.
-
Calibration of the outdoor temperature sensor , often overlooked, but essential for stable performance in heat pump mode.
-
Restart and observation for 40 minutes to validate the inverter regulation and the maintenance of the discharge pressure.
Results: comfort and efficiency restored
Upon completion of the repair, the Goodman heat pump restarted normally. The compressor resumed smooth operation, the indoor temperature returned to a stable state, and power consumption was measured at optimal levels.
The customer was impressed by the speed of the diagnosis and the accuracy of the repair. By avoiding a complete unit replacement, we achieved savings of over 60% compared to purchasing a new system.
Why entrust your heat pump to AirGreen?
At AirGreen , we combine field experience, technical expertise, and customer commitment with every service call. Our certified technicians have the tools to service all major brands— Goodman, Fujitsu, Gree, Midea, Zephyr, Tosot, LG, and Sharp —and carry a mobile inventory of genuine parts for fast repairs.
We operate in all areas of Montreal, Laval, Longueuil, on the North Shore and the South Shore , guaranteeing:
-
A clear and documented diagnosis .
-
Durable repairs with original parts.
-
A transparent service , without hidden costs or unnecessary interventions.
Maintenance tips to extend the life of your Goodman heat pump
To avoid costly breakdowns, our experts recommend a few simple actions:
-
Clean the interior filters every 4 to 6 weeks during the heating or cooling season.
-
Clear the outdoor unit of any obstructions: leaves, snow or debris can block airflow.
-
Check the stability of the wall mount regularly —especially for units mounted high up, like this one.
-
Schedule annual maintenance : coil cleaning, compressor testing, temperature sensor calibration, and complete electrical inspection.
Annual maintenance can extend the life of a heat pump by an additional 5 to 7 years and reduce energy consumption by up to 15% .
An exemplary repair by AirGreen
Thanks to a quick and thorough response, our team brought this Goodman wall-mounted heat pump installed in Pointe-Claire back to life. This type of call perfectly illustrates the AirGreen philosophy: diagnose accurately, repair intelligently, and guarantee the long-lasting performance of every residential HVAC system .