My lg r410a portable a/c started making a fast midrange groaning noise when in cooling but not fan mode. water tray is empty, filters clean but when i reset, noise restarts after short time. help?

have you cleaned filter a regular basis? dirty filters will cause low air circulation. go to long and the evaporator coil is dirty and plugged and will require cleaning. There is no E9 code listed the E5 code describes what you have. Have you been emptying water collection tank?

https://www.lg.com/ca_en/support/product/lg-LP0821GSB

High humidity causes more water on cooling mode.

This is not Refrigerator This is Air Conditioner
you wrong category
This is the specs for you unit:
4.0kw Portable Air Conditioner (14,000btu)
Including Flexible Window Kit
Benefits:
• Suitable for any bedroom or small living
• No Installation Required
• Timer On/Off
• Remote Control
• 3 Speed Fan + Dehumidifier
• 3 Year Replacement Warranty
Specifications:
• Cooling Capacity: 4.0 Kw (Cooling Only)
• High Air Flow 570m3
• Plug Type: 10A
• Control Type: Manual Buttons or Fully Remote Control
• R410A Gas

The last is the KEY. the unit don`t work with water works with GAS R410A
This is compressor type Portable Air Conditioner

Sounds to me like the bearings are going bad in the motor. The hotter it gets the grease breaks down and the squealing starts.

If you need further help, reach me via phone at https://www.6ya.com/expert/thomas_092728000e6acb79

In AC mode, the unit still has some dehumidifying properties. So, it may be that there is more humidity in the air this Summer, than in prior years. Having to empty the tank every 24 hours is not unusual. Be sure that the air intake filter is clean & check the exhaust hose for obstructions.

Hope this helped you & thanks fr choosing FixYa.

If it is rattling when in either fan or cool, you are having either a fan motor problem or the blade is hitting something. The water may be from a clogged drain port (by coil) which u are not seeing, if a new one is under 250, that is your best bet!

On the LG LDF6810 dishwasher, the best you can do is remove the bottom spray arm and then the 10 phillips screws that hold the filter down.
Pull the filter out and clean it as best you can.
Inspect the sump area beneath where the filter was. Be careful of broken glass and remove all debris. Use a flashlight and look into every little spot down there. Reassemble the dishwasher and operate your DW.
If you still have problems, I recommend a service call. Check your manual to confirm but most LG dishwashers have a 1 year parts & labor plus a 2 year parts only. Have your proof of purchase ready.

If you have had this unit for a while may need to geet the refrigerant checked

BFULLAWAY had the answer, I believe. My ice maker does the same thing, groaning and creaking for a few seconds, stopping briefly, then starts creaking again. This is due to ice stuck inside and it will make no ice as a result. Usually I see a piece of ice protruding and knock it out. Happened recently, but I saw no ice. Took a cup of hot tap water (not boiling) and poured it into the compartments where cubes form. (Made sure ice tray was in place to catch water.) I banged on the side and a misshapened cube fell out. Creaking/groaning stopped and unit began to function normally.