Troubleshooting
Symptom-based HVAC troubleshooting with likely causes, diagnostic checks and what each reading means.
Diagnostics & Troubleshooting
Gas Furnace: No Heat
The furnace is calling for heat but the burners never light, or they light and then shut down.
Troubleshooting
Outdoor Unit Will Not Start
A structured electrical walk through when the condensing unit stays silent on a call for cooling.
Troubleshooting
Indoor Blower Will Not Run
Tracing a dead blower across PSC and ECM equipment without guessing at parts.
Troubleshooting
Low Voltage Fuse Keeps Blowing
Finding the short in a 24 volt control circuit rather than replacing fuses and transformers.
Troubleshooting
Air Conditioner Not Cooling
A measurement led approach to poor cooling, starting with airflow rather than the gauges.
Troubleshooting
Heat Pump Not Heating
Working through weak or absent heat pump heating, including auxiliary heat and defrost behaviour.
Troubleshooting
Restriction in the Refrigerant Circuit
Recognising a plugged drier, a kinked line or a failing metering device from the readings they produce.
Troubleshooting
Non-Condensable Gases in the System
Why air trapped in a system raises head pressure, and how to confirm and correct it.
Troubleshooting
