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International Comfort Products C8MPL125J20A1 Limit Switch
A normal limit switch contains a sensor in the heat exchanger that can determine when the heated air is actually warm enough that it can be circulated throughout the house. Limit switches are built because if the air never warms up the you will lose heat in the ducts and the vents will just blow cool air.
Indications critical limit switch will not last the year
- The HVAC system refuses to start or will not stay running even though max temp has not been reached
- The system is starting to stop suddenly on more than one occasion
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