I need to know how to fix a Delonghi portable air conditioner.

Is that because they break down so often or the fact that you can't find anyone to fix it?

A little of both.

On a Delonghi portable air conditioner, it won't come on for three minutes after you restart it, so that is a normal behavior.

If my AC was shutting down due to power fluctuations and slow to come back up due to safety measures, I have a problem – but with the power supply to the AC, not the AC itself.

The LT error on a Delonghi AC is the LT or low temperature solution. Turning it off is a solution for that.

So would be switching it to fan only, except that it doesn't cure what caused the low temperature.

You can get the low temperature error if it is surrounded by curtains or furniture and ends up cooling until freezing the air around it.

I would notice the icicles around it if that were happening.

The condensate on the coil would freeze first, so no. If there's ice on the coil, it will give you the LT error as long as the refrigerant leak actually causes the coil to freeze.

If I have a refrigerant leak, it will eventually stop working.

Not if the problem is due to bad air flow due to a dirty filter, though that could cause the LT error along with the CF error – wait, CF is a notice to replace the lime scale filter.

What are some of the other error messages on this portable air conditioner?

HL is the notice for a high level of water in the internal tray.

I haven't seen that one. And in a portable AC, the solution would be checking the drain tray for clogs.

F1 is an error for the water filter being clogged. That also suggests you need to clean the drain pan for clogs and problems too.

If the drain pan is off-kilter, the most obvious indicator is water dripping into the room instead of out.

If you get the PF error for probe failure, the probe is damaged. The manual says to call for service.

I'd do a web search for the part number and instructions to replace it before I did that.

If the AC's indicator lights are flashing, the system is erroring out. The solution is a hard reboot.

How do you hard reboot a Delonghi air conditioner?

Turn it off or unplug it, let it sit for five minutes, then plug it in. The point is to make sure the control board has no power for at least a few minutes.

Power cycling my gaming console is about as hard.

The Delonghi user manual says to call for service if rebooting doesn't fix it.

If the problem is not solved by rebooting, it is something that requires service.

If the compressor is cycling on and off by itself, check to see if the freezing error is coming up. If so, the problem may be a refrigerant leak or temperature sensor.

At which point, I'm back to calling for service unless the solution is changing a filter or improving its air flow.

At least you can speed up the process by blowing it with a hair dryer.

Putting it on fan mode is annoying enough, and that doesn't look weird to the neighbors.

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