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Carrier 58MTA100F10116 Limit Switch
A normal limit switch has a sensor located in the furnace that makes the determination when the air is actually warm enough that it can be circulated throughout the house. The main reason limit switches are made is because if the air never warms up then the house will never get warm enough.
Warnings limit switch needs a replacement ASAP
- The whole system starts to shut down unexpectedly more often than not
- The heating and cooling system is unable to start or will not stay running even though max temp has not been reached
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