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Lennox 13HPD-036 Air Pressure Switch
The main function of the switch is to determine whether or not the main blower is blowing air. An air pressure switch is one of many other facets of the HVAC safety checks that are dedicated to stop injuries or explosions. Various air pressure switches are designed with a reset that is manual instead of automatic, from which the switch will have to be manually reset in order for the HVAC system to continue running.
Symptoms to Look for when your Air Pressure Switch is on its Last Leg
- Furnace will not ignite.
- The desired temperature indoors seldom fully attained.
- Incorrect voltage reading.
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