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LG LP120HED Air Pressure Switch
The actual job of an air pressure type switch is to see if the blower fan is blowing air. This is just one of the many indispensable devices designed to keep everyone in the house safe. Some different switches have a manual reset feature, which means you have to physically reset it before the HVAC system will continue.
Signs that your HVAC Air Pressure Switch is Beginning to Fail
- The correct temp seldom achieved.
- The furnace can not operate at all.
- Wrong voltage running through the switch.
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