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International Comfort Products T9MPD050F12B1 Limit Switch
A normal limit switch has a sensor in the air handler that senses, or governs, when the air is warm enough for the main blower to kick in and circulate the air. The main reason limit switches are made is because if the air is not warm enough then the house will never get warm enough.
Clues limit type switch is going out
- The system is beginning to erratically on more than one occasion
- The heating and AC system will not begin nor will it stay running for any significant length if time
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