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Carrier FF1DNA030011AAAA Air Pressure Switch
The reason for the existence of an air pressure type switch is to see if the main blower is on and running. An air pressure switch is one of the critical safety creations designed to keep everyone in the house safe. Some different switches are constructed with a manual reset, which, of course, means that it would have to be reset by hand before the HVAC system will continue.
Clues that your Switch is Already Going Bad
- The expected indoor temperature seldom achieved.
- The blower fan can not function properly.
- Bad electrical voltage reading from the switch.
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