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Carrier 42S Air Pressure Switch
The main function of this type of switch is to sense if the primary blower is blowing air. Some pressure switches can have a manual reset, which means it will have to be manually reset or the whole HVAC system will not continue operation. This pressure switch is a vital device of all the safety features in today's HVAC systems in place to keep you safe from injury or explosions.
Signals that the Air Pressure Switch is Beginning to Fail
- The proper indoor temperature seldom achieved.
- Bad volt range being read from the pressure switch.
- The furnace can not operate at all.
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Before buying or purchasing a new Carrier 42S replacement part do your best and double check the model number and also make a visual comparison in order to be sure the correct air pressure switch is being ordered. If you are unsure about the installation of the air pressure switch by yourself then it may be wise to find a professional in your area to do the replacement of the part.
Feel free to download your manual for help.
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