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International Comfort Products GPCM24K060F Limit Switch
One big reason why limit switches are designed that way is due to the fact that if the air never warms up inside the exchanger the you will lose all the heat as the air flows through the ducts. The limit switch is a type of sensor switch in the heating area that decides if and when the air is warm enough so that it may be pushed through the ducts and out the vents.
Some clues limit switch will need replacing
- The system is beginning to behave erratically occasionally
- The heating and AC system will not start or continue to run like it should
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