Unit shuts off completely after about 5 minutes. both coils are clean. cools well until it shuts off. will restart after approx 20 min. Low charge ?
This looks like a mini-split. If so, that sounds like it could be your issue, especially if everything is clean as you say. Specifications call for checking your charge levels every year. If it has been that long or longer, I'd definitely do that. Running low can damage the compressor.
However there could be another issue; Mini-splits (but not all) can have a de-humidify and a defrost cycle. A quick look up of the model says it does have a dehumidify ability. It's possible that the sensor has gone bad, and the unit tries to cycle the de-humidify or defrost cycle and it can not; or, there is a valve that switches the unit back and forth and the valve is stuck, so it might be a sensor for the valve which indicates it did not switch modes or it needs a recharge. Twenty minutes sounds about right to do a dehumidify cycle.
If it has a heat cycle, try that and see if it will switch to heat cycle, or just turn on dehumidify if it can do that, and see what it does. Either way, it will need a service call if you can't work on it yourself. If you know your stuff, you could try unplugging the unit and open it up to find the sensor and test it. I don't know the unit, so I can't point out where these are, but, they should be obvious, and have part numbers. If it's the valve not switching, you'll need a tech as the freon will need to be removed, the valve replaced, and then a vacuum pulled, and the freon replaced. For a 10k unit, depending upon cost of replacement it might not be worth the service call. You could call the manufacturer and only replace the bad half, if it's a mini-split, might cost about the same as a service call.
I hope this helps; but, if it does not, please comment (below your question) and add more information as you get it.
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