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Lennox CB27UH-042 Air Pressure Switch
The function of an air pressure type switch is to determine whether the main blower is circulating the air as it should. The majority of pressure switches are equipped with a manual reset feature, which means it will have to be manually reset in order for the system to begin normal operations again. This switch is a very critical piece of all the safety features in today's HVAC systems in place to keep you safe from injury or explosions.
Signs to Look for when your Air Pressure Switch has Failed
- The blower fan will not run.
- Bad voltage reading.
- The expected temperature is rarely fully attained.
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