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Lennox HPXA12-036 Air Pressure Switch
The job of the switch is to sense if the primary blower is actually running. This switch is just one of many device to keep you from harm. Some different switches may have a manual reset, which forces the system to be reset physically in order for the system to begin normal operations again.
Signs that the System Pressure Switch is Starting to Go Bad
- Your furnace is unable to ignite the gas.
- Inaccurate voltage reading.
- The desired temp is never reached.
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