Hi, welcome to Just Answer. My name is XXXXX XXXXX X look forward to helping you! I suspect it may be plugged if it has not been descaled recently. Does it sound like it is trying to work in water cooling mode or just stop?
We descaled the bottom of the unit, where it is usually wet. Didn't improve it. When starting the unit the fan blows and then we hear a 'clicking' sound every few minutes until the compressor comes on after 10-20 min. of trying. Twice recently a red light came on but the unit kept working when we pushed the reset button.
Getting cool in Switzerland now, so no urgency anymore.