Driven and compresses Ultra Air Tucson the refrigerant gas you can see the high pressure line coming out of the compressor and going up through here to the condenser you could get a better view of the condenser from under the front bumper it’s this right here it looks like the radiator but it’s actually the condenser the condenser.
works just like the radiator and it cools off the refrigerant which gets very hot since it’s being compressed so it goes through the condenser cools down but still remains high-pressure and goes up through there comes across goes all the way across and into the cabin of the truck behind the firewall is a valve that makes the refrigerant go from high pressure to low pressure when the refrigerant goes from high pressure to low pressure it gets very cold and that.
cold refrigerant then moves through the evaporator which you could see on the screen is a mini radiator a fan blows over the evaporator and that’s how you get cold air you can see the high pressure hose is narrow and it widens up here which makes it lower pressure so it goes through the evaporator comes out through the low pressure line follows.
it this way goes here here’s the low pressure valve which we’ll be using in a few minutes it goes down and then ends up going right back to the compressor where it gets pressurized again so basically the compressor pressurizes the refrigerant when the refrigerant changes from high pressure to low pressure it gets really cold and that’s how you get your cold air all right so this is going to be really easy to do now that you understand the basics of how the system.
It pushes up against the switch and closes the connection inside this switch and allows for current to pass through and when current pass through that it goes from there usually to an AC compressor clutch which is already crowded and when it gets that current from your AC no pressure side switch it turns on and starts pumping the refrigerant from the wall side.
Into the high pressure side but then again as a consular infusion from the most time to the high pressure side the pressure inside your low side goes down the lowest turn threshold and when it goes down below sound threshold your low pressure side switch opens and when it opens it cuts the current to your compressor and that’s why it disengages and then the whole cycle repeats itself and then we have low refrigerant this just happens more and more quickly now for whatever reason you don’t have access to the repair manual for your car you can use these numbers you see here to give you a general guide.
so for example right now Tucson air conditioning we’re here is about degrees Fahrenheit above % humidity so on the low side we should have to psi of pressure on the high side and should have psi of pressure and I know that’s a bit of a wide range but you can see we have here we have about or maybe or on the low side and then we have and for both for both sides we’re on the lower side so we can conclude that we are just the compressor clutch engage and the engine running basically means you have a shot AC compressor.
It’s basically not compressing the refrigerant that’s coming to it from the both side or perhaps maybe there is check valves here they refrigerant from this side going out and out that cannon from this side coming in and not back out whatever the make case maybe you have a bad if you can pursue and you need to replace it or rebuild it alright so next let’s say you have higher pressure on the high side and what you’re supposed to have and then lower than what you’re supposed to have pressure on the low side.
symptoms of my what my AC unit is actually doing right at this point and I’m going to switch it on and you can hear and see what’s going on and we’re looking at the top of the AC unit with the fan you so you can hear it buzzing you can hear the motor trying to start but there’s no action anywhere okay and show you something here I’m going to use a little stick.
Here and just spin the fan you can see the Finn the fan tries to start up and it’s trying to spin up and it’s spinning up but obviously it didn’t spin up on its own as it should and it’s not going full speed either it’s like taking forever to get up to speed.
And I doubt it’s going to keep on going again the compressor I have not heard it turn on yet now I just heard the compressor buzz again sounds like it’s trying and basically what all this indicates is that the capacitor in this AC unit is not working correctly because neither one of the motors is spinning up but obviously they’re getting energy because the fans spinning and you can hear the motor the AC motor trying to engage but if the capacitor isn’t up to snuff neither one will actually happen so I’m just going to go inside now and shut it off shutting it off I turn the thermostat control to off.
Then the door if you slide it in a little bit at the top it’ll just stay there okay next we’re going to look at what’s inside all right now we’re looking inside our breaker box and there’s the actual breaker itself and as you can see he’s got an on-and-off setting to it basically you know they’re saying he’ll take it out flip it over and it’ll be off well you know what there’s no sure way to make sure that that breaker is off take it right out of the box so there we go we pulled it it’s got a little handle on it as you can see hopefully and you pull the whole breaker off there it is the two contacts and I’m putting it on top of the box that way I know there’s no.
You have the AC repaired in emergence, as long as you hire a reputable service provider. In case the AC doesn’t work properly even after doing what is mentioned previously will then need to select the automobile to a reputed vehicle mechanic. Another major reason the AC doesn’t work in a vehicle is due to a compressor issue. Like every other equipment, it’s important to make certain that the AC is well-maintained and doesn’t malfunction. Take your vehicle to an auto repair shop that are expert at AC repairing.
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Secondly, systems are usually huge which means that the intricacy of the matter is also greater. The air-conditioning process is unquestionably one of the most significant regions of the vehicle, and whether or not it stops working, passengers can truly have an extremely lousy moment. Therefore, folks install Air-Conditioning system in their residential and business areas to hit the temperature. Older automotive ac techniques utilize the R-12 techniques which require mineral oils, while the more recent techniques utilize the R-134A methods which require PAG oils.
Things You Won’t Like About Tucson Ac Repair and Things You Will
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