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International Comfort Products PAF030K000A Limit Switch
A normal limit switch is a type of sensor switch in the heat exchanger that decides when the heated air is actually warm enough for the blower to be activated. Limit switches are built because if the air never warms up then you will never get hot air through the ducts.
Some warnings limit type switch will not live much longer
- Your system is starting to run erratically from time to time
- The heating and cooling system will not start or will not stay running even though the desired temperature has not been attained
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