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Samsung UCC2800C Limit Switch
The reason limit switches exist is due to the fact that if the air never warms up inside the exchanger then the house will never get warm enough. A normal limit switch is a switch in the heat exchanger that senses, or governs, when the air is actually warm enough to activate the main blower.
Indications limit type switch is in dire straights
- The system begins to shut down unexpectedly more than once
- The heating and AC system will not start nor will it stay running even though the desired temperature has not been attained
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