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Carrier 39-3SI Air Pressure Switch
The job of this type of switch is to figure out if the main blower is circulating the air as it should. The vast majority of pressure switches made today may have a manual reset, which makes you reset it by hand or the whole HVAC system will not continue operation. This is one of the vitally important safety hardware devices made to stop injuries or explosions.
What to Look for when the HVAC Air Pressure Switch is Starting to Go
- Furnace refuses operate.
- The proper temp is hardly ever attained.
- Inaccurate voltage range being read from the pressure switch.
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Before buying or purchasing any Carrier 39-3SI part do your best and cross-check the correct model and also make a visual inspection in order to be sure the right air pressure switch is the one being purchased. Replacing a new air pressure switch is a piece of cake if you know what you are doing and have the proper tools to do it right.
Feel free to download your manual for help.
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