A Gentleman of Noble Character
TealArmor.us
Guestroom Climate Control (via PTAC)

The Packaged Terminal Air Conditioner (PTAC) is one of the hotel industry's standard means for Guestroom Climate Control. A few of the most common brands are GE, Amana, Trane, LG, and Gree. I have compiled some Insider's Insights for some these PTAC units:

The typical cooling limit is 60ºF, heating limit is 85ºF. (Preset Limits CANNOT be altered.)
Some units have an Occupancy Detector to disable the PTAC when no occupants are present in the guestroom.
Some units have a Front Desk switch to allow PTAC operation when occupants are assigned to the guestroom.
PTACs will emit a residue odor released by the heating elements when heating mode is engaged.
All PTACs have compressor overload protection to disable the compressor when it is over-heated.
CLOSE the external ambient air vent to re-circulate the internal conditioned air.
NOTES:

Do NOT place items that block the front filter grille. PTACs will overheat and malfunction.
Do NOT place WET towels at the base of the PTAC enclosure (Electrical Safety Hazard).
Remove ALL beverages and liquids OFF of the PTAC enclosure ledge.
Do NOT rig, tamper or modify the front panel.
Keep children and pets AWAY from the PTAC unit.
DO NOT slip deodorant tablets or objects into the air flow grille.
Some unit are controlled from BOTH the front panel access AND the wall mounted control.
Do NOT SIT upon the PTAC enclosure ledge. Your weight will rupture the enclosure seals.
If you alter the temperature setting, allow 20 minutes for the PTAC to stabilize.
Leave the operation mode on AUTO if the room will be unoccupied for an extended time.
Inspect the Air Flow Grille for evidence of mold and mildew.
Report ALL excessive vibrations, rattling, and pungent odors to the hotel management.
Report ALL evidence of structural damage and discoloration to the hotel management.
============================================================================
A hard reset will often resolve an operational issue with the PTAC. Un-plug the PTAC from the wall AC outlet, wait about 30 seconds, plug it back in and observe the initialization sequence. Check the temperature setting on the panel or the wall control. The PTAC should stabilize after about 20 minutes.
Wall controls will take 5 to 10 minutes to restore full functionality after RESET.
Amana Wall Mounted Control Unit
Front Desk
Button