Carrier LCA061P fan cover cracked

Hello, David -

Apparently you do not have the owner's manual for your model Carrier furnace to check. You can add the model number of your Carrier furnace by choosing Comment and typing the information there so that I or another volunteer answerer for Fixya can advise you.

If you have not opened the cover / door of the furnace to determine if a chart of error codes and what needs adjustment or repair, do that.

The problem MAY have to do with the vent of intake pipe and a blockage. See answers here:
https://answers.yahoo.com/question/index?qid=20090122114540AAhdnVC&guccounter=1

Best wishes.

clean out the drain at the back

No. This is strictly a gas package unit, not a heat pump. the condenser fan motor should NOT run when their is a call for heat from the thermostat. The condenser fan only runs with the compressor on a call for cooling. Hopefully the compressor is not running @ the same time, but if it is, it would make sense that the contactor for the compressor & condenser fan motor is stuck closed OR the low voltage cooling wires are shorted straight to a 24Volt control wire.

ifixit.com this site has breakdowns tutorials and parts for sale. Be sure you order the right parts for your model phone and carrier. Parts vary from carrier to carrier

Home depot or lowes should have 5 inch flex and a vent

6050BTU

Carrier LCA061P 6050 BTU Thru-Wall/Window Air Conditioner

Something fell from the roof and broke the top (outside) of my
visionair a/c unit. Can I replace the part? It's near the circle on
top and finally part broke away and can't be found

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http://www.nextag.com/carrier-air-filter-expxxfil0016/compare-html

undersized is just that...you and I got taken to the cleaners.but i did put an adjustable vent in the cod air return vent duct next to the floor...it helped mine but i say some installers should.....well you know

Good possibility. WIth the unit powered off and unplugged check the clearance of the wheel and the collection basin underneath, Debris could be the source but I suspect the bearing is failing on the motor