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International Comfort Products TDE075B12G1 Limit Switch
One big reason why limit switches are designed that way is because if the air is not warm enough then the house will never get warm enough. The limit switch is a switch in the heat exchanger that decides when the air is actually warm enough for the blower to be activated.
Key symptoms of a weakening limit switch
- The heating and AC system will not even start or run longer than a minute
- The system is starting to go through the startup sequence but stops quickly frequently
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