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International Comfort Products H9MPD125L20C1 Air Pressure Switch
The main function of the air pressure switch is to sense if the main blower is doing what it is supposed to do. This switch is one of the key safety creations designed to stop injuries or explosions. Most air pressure switches are constructed with a manual reset, which forces the system to be reset physically or the whole HVAC system will not continue operation.
What to Look for when the Switch is Starting to Go
- The proper temperature is almost never reached.
- Your furnace can not operate.
- Inaccurate voltage running through the switch.
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