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Bryant 478 Limit Switch
A normal limit switch is a switch in the heating area that senses, or governs, if and when the air is warmed to a point for the air to begin normal home circulation. Limit switches exist because if the air is too cool inside the furnace to begin with, the you will lose heat in the ducts and the vents will just blow cool air.
What are the indications that my main limit switch is dying?
- The heating and AC system will not begin or run well like it should
- The whole system is starting to runs spotty repeatedly
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If you are going to be buying or purchasing a new Bryant 478 replacement part, do your due diligence and cross-check the correct model and also make a visual comparison in order to be sure the correct limit switch is the one being purchased. There is no rule that says you have to replace the part all by yourself. Look for a professional in your area to replace the part.
Feel free to download your manual for help.
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