20 Most Recent DeLonghi PAC C100 Air Conditioner Questions & Answers

This AC unit has no tank to empty or drain line for it to run.

I hope there is relay error in your controller card. You have to replace that by new one.

I had exactly the same issue after using it for a couple of months.
I fixed it by removing the left panel (the one with the grid) (6 screws and pull the panel down).
There is a small white tray in the mid section toward the back of the unit. the top drainage hole is right there and in my case was completly blocked with wet lint.

!!! the fins of the radiator are extremely sharp...

Temp setting is very low. Raise it. And also service your unit frequently.

Ft = normally means empty the internal tank, this is normally done at end of season cleaning storage. On some units there is a small ''bung'' low on the rear which will empty the tank - the unit should then reset when powered up. Hope this helps

May be very low temp setting/coil and filter blocked/drain pan blocked.
Check for one or more of above and rectify it.