Set AC Only Model 3

[CMarshall]

I have my 2018 Model 3 parked under shed during my 2 months of travel. I live in the South of USA, so summer is very humid. I set the climate to 78 degrees just to keep the interior dry. I notice that during the night, the heat comes on.

Can I set the climate control to just cool when meeded and not try to heat to the set temperature? I don't care if the temp drops below the setting.

 

[Watts_Up]

I imagine that you keep you car plugged to keep the AC running.

If so, I wonder if using a portable dehumidifier, that you could put in middle of the car after folding the back seat, would be more simple and solve your heating issue.
The only problem would be to empty the container but you could add a little drain hose similar to this other larger device.

 

[jmaddr]

Are you talking about setting the overheat protection? I wasn't aware that it also turns on the heat. Could it be you also have scheduled departure set which would attempt to up/down the cabin temp around a departure time. Second, overheat protection is only valid for 12 hours I believe. I'm not aware how long scheduled departure would operate during extended parking.

BTW, I live in Tampa, FL and it's stupid humid in the morning. The entire care is coated with enough water that I have to run the wipers and if I have the windows dropped when first departing, you can be sure that the first turn will cause a waterfall off the roof and into the car. I don't find the interior to be humid at all (and both scheduled departure and overheat protection is turned off) so such protection isn't necessary. Wondering if you might have a bad seal somewhere?

 

[Family Joules]

I'm not aware of any currently available settings that would accomplish what you are trying to do. I've always thought Tesla should have an option to set a temperature comfort range, such as 70-78, so if the cabin temperature climbs above 78 the A/C comes on, and if the cabin temperature falls below 70 the heat comes on, and in between these two temperatures neither heat nor A/C comes on. My home thermostat does this, it would be simple to add.

 

[SigNC]

Easy solution, don't turn the AC on and let the car sit. It's a car under a shed, it will be fine.