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International Comfort Products APFM36K000A Limit Switch
A normal limit switch contains a sensor in the air handler that can determine when the air is actually warm enough to activate the main blower. Limit switches were created because if the air is not warm enough then the house will never get warm enough.
Some clues of a faulty limit type switch
- System will not begin or run well longer than a minute
- The HVAC system starts to shut down unexpectedly often
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