How to Use the MRCOOL App for DIY Ductless Mini Split

The MRCOOL DIY Ductless Mini Split comes with a host of features, not the least of which is the ability to control the indoor unit with the MRCOOL app from your smartphone or tablet.

One of the coolest features of the MRCOOL DIY Ductless Mini Split is the ability to control the functions using the mobile app. In the main control interface, the user can control the unit's on/off status, operation mode, and fan speed.

The mode button will allow you so switch between fan, auto, cool, dry, and heat.

To change the temperature, slide your finger up and down on the screen.

From the top right of the screen you can access special functions. With the timer on/off functions, you can schedule the unit to turn on and off at specific times and on specific days.

With the sleep function you can customize your comfort by setting a target temperature for the unit to meet while you sleep.

The 8 degree C function is also known as the freeze protection mode, which will allow your unit to produce enough heat to protect your home from cold temperatures when the outdoor temperature below 46 degrees.

Summer or winter, these extra functions give you the perfect chance to get the most out of your MRCOOL DIY Ductless Mini Split.

6 comments (view/add)
  • Israel
    Posted on 9/19/2018

    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

  • Kyle
    Kyle from Ingrams
    Posted on 9/20/2018

    There is not really a way to use the app as a programmable thermostat. You can set time off and on, but it is not recurring, as far as we have been able to figure out.

  • George Cannon
    George Cannon
    Posted on 7/30/2018

    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.

  • Steven
    Steven from Ingrams
    Posted on 7/30/2018

    One of our technicians would be better able to help you. Please give us a call at 270-575-9595 ext. 300

  • Mike
    Posted on 6/20/2018

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

  • Kyle
    Kyle from Ingrams
    Posted on 6/20/2018

    Some mini-split systems do come with heat strips, but it varies from brand to brand.

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