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International Comfort Products PGMD60G1154 Limit Switch
The limit switch contains a sensor in the air handler that senses, or governs, if and when the air is warmed to a point for the air to begin normal home circulation. The main reason limit switches are made is because if the warmed air is too cool then the house will never get warm enough.
Some warnings limit switch has little life left
- System will not begin the ignition sequence or continue to run even though max temp has not been reached
- The whole system is beginning to runs uneven from time to time
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