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Lennox G40UH-48C-135 Air Pressure Switch
The actual job of this type of switch is to determine whether the blower fan is doing what it is supposed to do. A good number of pressure switches today may have a reset feature that is manual, which means it will have to be manually reset before you can continue using the system. This is one of many other facets of the HVAC safety checks that are dedicated to keep you from harm.
Symptoms that the System Pressure Switch is Needing to be Replaced
- Bad voltage reading.
- The desired indoor temperature is hardly ever fully achieved.
- The furnace or AC can not function properly.
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