It is a small, often rectangular or cylindrical device with an electrical connector plugged into it. Before assuming the switch is faulty, technicians must verify that the venting path is clear and that the motor is generating the correct pressure, as cleaning a vent or replacing a motor is a more common solution than replacing the switch.
Locating the Pressure Switch for Troubleshooting
Its primary function is to monitor the strength of the draft created by the inducer motor. If your furnace fails to ignite or stops heating unexpectedly, the culprit is often a safety mechanism designed to prevent dangerous operation.
It is usually mounted near the top of the unit, close to where the inducer motor is located. A clogged flue pipe, a cracked heat exchanger, or a failing inducer motor can all cause the switch to trip.
Locating the Pressure Switch for Troubleshooting
Understanding the Role of the Pressure Switch The pressure switch is not a component that generates heat or directly controls the flame; rather, it is a safety sensor. This motor creates negative pressure in the heat exchanger, venting exhaust gases safely out of the home.
More About Where is pressure switch on furnace
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