this post was submitted on 17 Jul 2023
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Yeah, I know what you mean... heck, I would've bought a new one, but, as you said, money is tight, couldn't afford one right now ๐คท. Technically, I don't do things like this, fix ACs, but I am an engineer, so I thought, the heck with it, why not try at least ๐คท. I can't make it worse... probably ๐.
Anyhow, I bet it's something with the comoressor in your case... maybe something on the control board, maybe the motor in the compressor in the external unit... can't say for sure, but if only hot air circulates, there is no other explanation. The compressor is responsible for cooling the air. Just keep this in mind if someone tries to swindle you when you finally decide to get a repairman for the AC ๐.
This is good information, thanks. And yeah it works like 80% of the time, but I can really tell when it's not working, and when I go outside I notice the fans not spinning. So we'll probably keep using it until it absolutely needs to be done lol
I sell parts for residential HVAC. If your outside motor is humming, try starting it with a stick. If the motor starts with a little push, it's more likely a capacitor instead of the contactor/relay. Capacitors are fairly cheap and easy to replace.
I'll try that, thanks. But I'm sure it would still be ungodly expensive since I'd not dare replace it myself.
Yeah, the external unit is the problem. In most cases, the switch/relay for the fan and the compressor are the one and the same, so if the fan doesn't work, the compressor probably doesn't work as well. If the compressor works, but the fan doesn't, you'll probably hear just a buzzing sound from the external unit. Still, it will cool, just a lot less. The fan is needed to draw the hot air from the raidiators, cool the colling liquid down and pass the cold liquid back to the internal unit, so it can use it to cool the air inside.
An AC is basically like a big energy exchange system. Draw energy (heat) from one end, release it at the other, but in order to do that, you need both fans and radiators to be present at both ends, cuz the heat exchanger in this case is air.