E3 floor standing

E3 error in free-standing compact dishwasher
1. Contact an Authorized Service Center.
Error messageE3in free-standing compact dishwasher indicates malfunction of heating element.
We recommend requesting a visit by a service engineer.
E3 error in integrated compact dishwasher
2. Contact an Authorized Service Center.
Error messageE3in integrated compact dishwasher indicates too much inlet water and/or a leak.
We recommend requesting a visit by a service engineer.

https://www.youtube.com/watch?v=dkMCdjJdKRs
The E1 or E2 error code is an Auto-Stop Protection Error, indicating an issue detected by a sensor. This error code will require service. The E3 error code displays when an Abnormal Operation Protection Error has occurred, and activates to protect the unit from damage. This error code will require service.
https://www.lg.com/us/support/help-library/e1-e2-or-e3-error-code-CT10000014-1340721215523
In this case, you need to drain water and remove the laundry. Then, run the rinse mode to clean the drum. Next, start the technique to make sure that the OC error has disappeared. If the washing machine is not correctly connected to the drain hose, OE, OF, E3 will appear on display.
https://all-errors.com/samsung-washing-machine-error-code-e3/

AC
The E1 or E2 error code is an Auto-Stop Protection Error, indicating an issue detected by a sensor. This error code will require service. The E3 error code displays when an Abnormal Operation Protection Error has occurred, and activates to protect the unit from damage. This error code will require service.Dec 20, 2018
https://www.lg.com/us/support/help-library/e1-e2-or-e3-error-code-CT10000014-1340721215523

Try changing out your air filters if that don't work try cleaning evaporation coils. If that don't work get ahold of your local HVAC shop they will take care of it.

What floor standing air conditioner?

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

E3 means longer heating time. Usually this indicates the heater element has failed.

E3 usually means the heater element has failed. From the title of tyhe post it seems you know that already.

E3 usually indicates the heater element has failed perhaps it has now also blown a fuse?

Error code E3 stand for paper jam


Good luck to you

there is no way to reset the control. you have to replace it. sounds the the jumpers on the board have failed.