How to Use the MRCOOL App for DIY Ductless Mini Split

Do splits systems offer an emergency heat strip when the temperatures are below whatever the system is rated at?

I just bought a 3 room unit, after I put it in, the compressor would not work, they sent me a new PCB board. With no instructions, it does not work I think I might have got a wire in the wrong place, is there a video or a photo to show the board.

Is there a way use the app as a programmable thermostat? Or the remote? I assumed that would be possible when I ordered two of the diy units, so far I can’t figure out how to do it. I want to simply have the temperature automatically change from one temperature setting half the day to another temp setting the other half of the day. I was considering using the sleep function for this but it’s rather unintuitive to use. I don’t know how it knows when your sleeping? Or do you have to turn the sleep function on every night before you fall asleep? Then what? For how long does it stay at the sleep setting and what does the temperature revert back to if it only stays on sleep for the charted 8hrs? Also is there a way the app can show what the actual ambient temperature is, or does it only show the set temperature? This would be helpful and reassuring to view while away from home This has been a frustrating experience to try and use with very vague instructions and a less than intuitive interface. I expected it would work as a programmable thermostat to some degree but so far haven’t found the ability to use it that way. I would really like my units to automatically change the temperature in my home from day to night without me having to think about it or remember to do it or be there. Maybe there’s a way to do that from the remote but so far haven’t figured that out either. Like if it needs to change to heat mode or cool mode to maintain or change the temp throughout the day or night and automatically change that temp to my desired setting day after day consistently. If this is possible could we have an explanation how? I’m sure I’m not the only one that would find this useful and more energy efficient, in other words ideal. If it’s not possible with the remote or app, is there a way to wire or wirelessly connect some type of programmable thermostat to accomplish this? Thank you for your reply in advance and I apologize for any frustration in my tone

Thank you for putting this info, and the forum, out there. Mr Cool is still suffering from birth pains, and struggling to make their documentation useful and informative! Have you found a way to switch the app from °F to °C? I can do it on the remote, but I can't see any such option in the app?