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International Comfort Products PGAA36C1K1 Air Pressure Switch
The main function of the switch is to sense whether the air blower is circulating the air as it should. Various air pressure switches may have a manual reset, from which the switch will have to be manually reset before the system will continue its normal operation. An air pressure switch is one of many other facets of the HVAC safety checks that are dedicated to keep you from harm.
Signs that the Pressure Switch is Beginning to Fail
- Bad voltage range reading from the switch.
- The furnace or AC will not run.
- The expected temp is rarely fully achieved.
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