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International Comfort Products GPFM48L080F Air Pressure Switch
The reason for the existence of this type of switch is to sense whether the main blower is running. A lot of switches are designed with a reset that is manual instead of automatic, which forces the system to be reset physically before the system will continue its normal operation. This is just one of many safety creations designed to keep everyone in the house safe.
Signs that your Switch has Gone Bad
- The expected temperature indoors seldom fully attained.
- The blower fan can not run.
- Bad electrical voltage being read.
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