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International Comfort Products PGMD18G0605 Limit Switch
The limit switch is a switch in the heating area that determines when the heated air is actually warm enough that it can be circulated throughout the house. The reason limit switches exist is because if the warmed air is too cool then you will never get hot air through the ducts.
Some warnings of a dying main limit switch
- The heating and AC system refuses to start or run well for any length of time
- The system is starting to shut down unexpectedly often
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Before buying or ordering do your best and cross-check the model number as well as make a visual inspection in order to be sure the correct limit switch is being ordered. You do not have to install it yourself. Hire a pro in your town or city to do the job for you.
Feel free to download your manual for help.
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