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International Comfort Products GDJ100M16A1 Limit Switch
The limit switch contains a sensor located in the furnace that makes the determination when the air is warmed to a point for the main blower to kick in and circulate the air. A limit switch was crafted due to the fact that if the air inside the furnace is too cool then the house will never get warm enough.
Major clues of a poorly working main limit switch
- The heating and AC system is unable to start nor will it stay running for any length of time
- The system starts to runs spotty more than once
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