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International Comfort Products PGMD24G0605 Limit Switch
One big reason why limit switches are designed that way is because if the air is not warm enough the you will lose all the heat as the air flows through the ducts. The limit switch is a switch in the heating area that makes the determination when the heated air is warmed to a point for the main blower to kick in and circulate the air.
Clues to watch for to know limit switch is in dire straights
- The whole system is beginning to runs uneven frequently
- Your International Comfort Products system will not begin the ignition sequence or will not stay running even though the desired temperature has not been attained
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