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Lennox HP13-042 Air Pressure Switch
The actual job of this type of switch is to sense if the blower is doing what it is supposed to do. This pressure switch is part of the safety system that is in place to keep you safe from any injuries. The vast majority of pressure switches made today are equipped with a manual reset feature, from which it would have to be reset manually or the whole HVAC system will not continue operation.
What Signs are Present when the Switch has Failed
- The desired temperature indoors is rarely fully attained.
- Bad voltage being read.
- Your furnace will not operate.
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