May 27, 2024 | Leave a comment | Home Examine This Report on How to handle HVAC system moisture issues Troubleshooting HVAC system operations advisable array. Incorrect refrigerant concentrations—both too small and much too significant—can make issues that negatively have an affect on cooling general performance. Inspect the ductwork visually to identify any signs of mold, extreme dust buildup, or other issues that may demand supplemental focus.The flame sensor detects the presence of the flame and shuts off the gas valve When the flame goes out. The flue is really a pipe that carries this page the combustion gases and steam from your combustion chamber to the surface.