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Hello, tell me the brand and model number of the air handler/furnace (its on a tag inside the same compartment of the furnace as the gas valve, you can follow the gas pipe to it).
Meantime most service alerts are on items that a home owner cannot handle themselves and you need to call the dealer. having said that we can still try a few things once I find out what sort system this is.
Is there a unit that sits outside and runs whenever the system is in cooling mode? If so tell me about how old it is, and if you can see a lot of dirt build up on its finned tube coils, tell me if you can spin the fan on it freely or not,
We can go from there