Most modern residential systems utilize a single-stage or two-stage switch, which may have one or multiple sets of contacts. Key Functions and Safety Roles The primary role of this component is to prevent life-threatening hazards.
Common Issues and Troubleshooting for Furnace Pressure Switch
This movement creates a specific range of positive air pressure inside the venting system. Other indicators include the furnace failing to start at all, or the system short-cycling frequently.
One of its most critical functions is to guard against the buildup of carbon monoxide (CO). Single-stage switches are often used on basic on/off systems, while multi-stage systems might use a differential switch that measures the difference in pressure between the inlet and outlet of the blower.
Common Issues and Troubleshooting for Furnace Pressure Switch
If the heat exchanger cracks or the venting is obstructed, harmful gases can leak into the living space. " You might hear the fan turn on for a few seconds before the burners click off.
More About What is a furnace pressure switch
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