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Lennox CB30M-31 Air Pressure Switch
The job of the switch is to sense if the primary blower is running properly. A good number of pressure switches today are equipped with a manual reset feature, which forces the system to be reset physically or the whole HVAC system will not continue operation. This switch is just one of many mechanisms designed to stop injuries or explosions.
Symptoms that your HVAC Air Pressure Switch has Gone Bad
- Your furnace can not operate.
- Bad volt range reading.
- The proper indoor temperature is never fully achieved.
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