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Payne PH1ZNA048000ABAA Limit Switch
This is important because if the air never warms up then you will never get hot air through the ducts. The limit switch is a type of sensor switch located in the furnace that determines when the air is warmed to a point that it can be circulated throughout the house.
Key signs of a barely functioning main limit switch
- The system is beginning to become inconsistent often
- The HVAC system will not even start nor will it stay running as it should
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