What Does HL Mean On DeLonghi? HL means high level of water in the tank on your A/C. You need to drain it. There should be a black thing at the bottom of the a/c next to the power cord. Open that up and drain it from there. Like. What does HL mean on my
How Often Do You Have To Drain A Portable Air Conditioner? Manual Removal: Standard portable air conditioners have buckets that need to be emptied periodically–from as often as every 8 hours to just once a month. What happens if you don’t drain portable AC? If you don’t drain your portable air conditioner, a few things