VAskodas

hello @Poshett the actual problem was low refrigerant level in the AC system. The symptom beside the not cold air was a hissing noise in the cabin generated every time i pressed the ac button. Finally I went to a skoda dealer and they refill the system and check for leaks. No leaks were found. Although they say if there is a small leak somewhere in the piping at the dashboard side it will be costly repair! I paid 92€ for this. The cost is depended on how much refrigerant they have to fill + the standard labor. Nevertheless, the AC is now ice cold as it should. P.S: The refrigerant type of my '16 Skoda Octavia 3 TSI 1.4L is R134a. I thought it was the new r1234yf but it wasn't. I hope your problem is the same and not worse.

No. I didn't have this extra part. just the valve. are you sure you have found the correct valve for your vehicle?

No problem. always happy to help. One last thing. to remove the blower fan it is extremely easy. just unplug the connector and twist the fan anti clockwise and it's off.

Hi. Yes indeed the drain hose is located behind the foot rest (on right hand drive cars). WARNING: i strongly advise you to not try to pull off the tube because there is a risk to rip off the tube and then you will another problem to solve. I did not find an external drain tube (i believe it is hidden behind the heat shield of the firewall in engine bay) but instead i removed the blower motor inside the cabine and it is relatively easy to feed a cleaning foam tube inside the big gap and do the job. For better results, use product the one that has omnidirectional holes on the tip end of the tube to apply the cleaning agent to the entire surface. TIP: use your phone camera to see how far you have to feed the tube and the position of the evaporator core. I hope the description will help you. If not ask me for further assistance.

5w30

well this concludes that at least part of the problem is a gas quantity in AC system for sure. Thanks for the info.

It's sad to hear that this is normal but in the same time it is good to know that this is not a problem at least. This is one of the things that should not be ''normal'' because it sounds like it is a problem. It bothers me to hear this at every cold start. Dont know. I hope in OBDeleven there is some setting that eliminates this but i'm not so positive about that.

Not sure if this would be the only reason but i guess it can contribute to poor cooling at some degree.

Ok. That’s good. So no issues there. It is helpful to know that this is how it should be. Moving on then…😁

Maybe it is true but the thing that confuses me is that on the ac menu screen it shows you the air flow vents that you have selected and when you use let’s say the front vent setting it shows you the side and the front vents being activated and when you use the footwell setting it shows only the according vents but not the side ones. So either it’s it a default set up for side vents being active all the time or something is wrong here.

Yes I agree. I noticed something else tonight. While I was set the air vents to the footwell air flaps I was getting air also from the left and right side vents although on the infotainment screen menu the graphic representation of the airflow showed that the air is going only to footwell vents!! So it must be the air flap mixing problem here for sure.

Indeed it has that option to individually set some options and yes it was set to ECO. But I do not believe that this was the cause of my issue because I did not use that mode. I used only normal and sometimes the sport mode. All measurements that I checked previously was while in normal mode and cannot really tell if the ac setting wasn’t or was on eco mode. In fact now I’m thinking that probably when used ECO mode the ac is set to ECO and when used NORMAL OR SPORT MODE the ac setting is on normal. So that’s that. But it still cannot handle the 33°C ambient temperature in lowest temp setting and full blast. The only solution for now is to use the recirculating air when the inside temperature is lower than external.

Nice. Thanks for the info. Will check will check tonight.

I didn’t noticed any other option in AC menu other that SYNC, AUTO/MANUAL, and some monitoring figures that change when you adjust each option. I don’t remember if the little gear/setting button does or has some extra options….i will check it.

Thanks for the input. You are right. Eventually I have to deal with this if these facts that cannot be changed. One more thing though, do you know about the ac control valve? It seems like it’s responsible for the flow of refrigerant into the system and looks like most of the time this fails and all the symptoms we discussed here is probably from this.