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International Comfort Products GDJ075M12C2 Limit Switch
The limit switch is a type of sensor switch in the air handler that can determine when the air is actually warm enough for the main blower to kick in and circulate the air. Limit switches exist due to the fact that if the air inside the furnace is too cool then the house will never get warm enough.
Main clues limit type switch should be replaced
- The HVAC system starts to behave erratically time after time
- The HVAC system refuses to kick in or run for any significant length if time
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