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Bryant 478 Air Pressure Switch
The actual job of the switch is to sense if the blower is running. An air pressure switch is just one of many safety creations designed to keep your family safe and sound. Some particular air pressure switches may have a manual reset, by which you must manually reset it or else the system will cease to function.
Signals that the System Pressure Switch is Failing
- HVAC system refuses to run.
- The expected temperature in the house is almost never fully achieved.
- Bad voltage reading.
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