AC unit fan doesn't start

[Haktor5]

Hey folks,
I'm having trouble with my AC and it's getting unbearable in Boston heat.

Even after watching many videos and reading tons of great comments I still couldn’t fix my carrier ac unit sitting outside.

What I diagnosed so far is:

- Condenser works but fan doesn’t. After 40-50 seconds condenser shuts down. I tried to manually turn the fan but didn't help kickstart itself.

- I opened up the panel. Capacitor and cables all look good and new. There is a blinking yellow light on the motherboard tho. (it’s a 2008 made unit). Couldn’t find what it means online.
Mine is a carrier performance 24apa5 model ac.

Any thoughts what the problem is here?

 

[SShaw]

Sounds like symptoms of a bad capacitor. Did you test it with a multimeter? That's the only way to tell for sure if it's bad.

Capacitors are cheap and easy to change, but you need to know what you are doing, as the capacitor is connected to 240 volts and will retain a charge after the power is shut off.

 

[Sponsor]

 

[Fitter30]

https://www.manualslib.com/products/Carrier-24apa-2835541.html
Heres the manual its a safe web site. Fan runs anytime compressor runs unit is tripping on a high pressure switch. Try a capacitor can pick one up at appliance parts or motor repair shop. Take a pic of the wiring before disconnecting and Capacitors can hold Voltage with power off short termials with a screwdriver between termials before unwiring.

 

[WorthFlorida]

It sounds like a bad fan motor. The relay used to bring power to the compressor also switches on the fan motor. But getting the code reading from the board may tell the problem. Page 12 table 3 in the manual.
A bad cap will usually have a swollen top by the connectors or if it's an electrolyte type it will be leaking. A bad cap the fan motor can still turn with a push on the fan blades but it will run slow.