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Lennox XP13-042 Limit Switch
The main reason limit switches are made is due to the fact that if the air inside the furnace is too cool then the house will never get warm enough. The limit switch is a switch in the heating area that determines when the heated air is warm enough that it can be circulated throughout the house.
Major indications of a faulty limit switch
- The heating and cooling system will not begin nor will it stay running like it should
- The HVAC system begins to initiate and then stops more than once
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