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I’m still yet to see anyone else show me their short cycling compressor, does yours do it too?You're already in service mode. If there were issues causing the compressor to 'short-cycle' they would be showing up in the alerts.
The heat pump is a very complex system which operates differently to a conventional HVAC. The fact that other Ys exhibit the same behavior is pretty much case closed in my opinion.
1. The climate uses between 20-60% of total energy consumed. It would be more energy efficient to simply leave it on, in fact it would be more energy efficient to drive up a 100m mountain than to cycle it off and on repeatedly almost constantly.FWIW in all your videos the compressor is only cycling at 1600rpm. That's very low. If it was really working hard it would be at 9000rpm. It really seems like the cooling demand is very low and the system is just cycling the compressor on and off to save energy.
I will say it again, if the compressor was hard faulting randomly due to a system defect there would be a bunch of alerts.
I will also say it again: the service screen is to tell the technician things, it's not for us. Aside from the fact that it looks weird to you you have not actually explained what symptoms you are having.
I too have played around in the service screen. It is buggy. It thinks the passenger seat is occupied even after I get up. The SCCM screen doesn't register some of the steering controls that I know work fine. Tesla doesn't really care about the service menu as it's not customer facing.
Reject is the wrong word entirely. Radiation is either reflected or absorbed. There is no such thing as rejection.reject UV rays and IR (heat)
OK, what about the ceramic tint films? Do the ceramic tint films reflect or absorb the IR and UV radiation? While on the subject, laminated glass filters out most UV rays. Does this UV get absorbed?Reject is the wrong word entirely. Radiation is either reflected or absorbed. There is no such thing as rejection.
So what happens to the UV? I don't actually know. Some will no doubt be reflected but I suspect most of it is absorbed as heat which warms the glass. Thankfully it's low energy stuff.
The infra red definitely gets absorbed heats up the glass which heats up the air next to the glass by conduction. Outside hotter air wafts away. Inside air gets hotter and hotter and hotter...
IR rejection is a total nonsense easily dismembered by simple observation.
Backing up a little, I omitted the transmitted radiation as it wasn't under discussion.OK, what about the ceramic tint films? Do the ceramic tint films reflect or absorb the IR and UV radiation? While on the subject, laminated glass filters out most UV rays. Does this UV get absorbed?
Thank you for the tips I do appreciate it, but I’ve been trying what you said for 3 months with no real change. Yea the sun shade helps, but the energy consumption is still too high by a long way.The Tesla Model Y HVAC works best if you do the following:
Set HVAC to Auto.
Set Fan Speed to High (Note that when the HVAC is in the Auto setting the Fan Speed control functions as a speed limiter, not a fixed fan speed). In HVAC Auto mode if you set the Fan Speed to Low or Medium, in very hot or cold weather, the HVAC system may not be able to move enough air to adequately cool or heat the passenger cabin.
Precondition for a few minutes (5 minutes in summer, 8 minutes in winter) before driving.
Turn on Recirculate Cabin Air during the hottest weather so the HVAC system will not have to work as hard.
Add a good ceramic tint film to the windshield, side windows and rear hatch glass. The glass roof is factory treated to reject UV rays and IR (heat) but you can also tint the glass roof if you want.
Install a mesh fabric sunshade as these really do make a difference during the daytime hours (sun does not bake the top of your head.)
Use Cabin Overheat Protection (COP) (COP remains active for 12 hours after you park.) If you use the COP Fan Only mode the energy usage is 1/3rd as much as if the AC runs when COP is activated.
The Tesla Model Y's compressor will run even if you turn off the HVAC system. This variable speed compressor runs to cool the following: the high voltage battery pack, front and rear drive units, high voltage power controllers, Model Y's computer and the PCS and the on-board charger. The compressor also cools itself. The passenger cabin is heated and cooled via the cabin heat exchanger (coolant to passenger cabin air heat exchange). The high voltage components are cooled via the chiller (liquid to liquid heat exchange.)
I didn't mean to be condescending, sorry.Errors displayed related to LV battery UV, first warnings in service mode for 20mins at a time, then customer facing saying pull over immediately with no acceleration.