What does E1 mean on portable AC - Heating & Cooling

The E1 code is an error code that appears on the LED temperature display of some digital air conditioners. The error code could mean anything from dirty air filters to a damaged room thermistor, a device connected to your thermostat that detects room temperature.
https://www.quora.com/What-is-the-meaning-of-error-code-"e1"-in-the-Voltas-window-AC
Check All the Buttons: The E1 error code sometimes means that one of the control buttons is stuck, particularly on Haier models. Press all the buttons. If you find one that is sticking, free it, and the error code should disappear.
https://www.hunker.com/13407286/how-to-fix-an-air-conditioner-when-it-gives-you-an-e1-code

This is what you error code means.
E1 = Room temperature sensor fault
Haier Air Conditioner Fault Codes


AC Repair Tamarac

Does your documentation refer to E1? If so, what does it say the problem may be?

room temparature cencor

hi my ac onida error e1

If it's a Delonghi Portable AC unit, E1 indicates that the water collection tank needs to be emptied.

If I knew which brand and the model number of what you had, I could be more specific.

Thanks for choosing FixYa.

have you checked to make sure the bucket is not full

if its a sharp ac ... it will need to be reset..
1) hold down the on/off button keep it held down and plug in the ac ..you should hear a beep...
2) hold down the mode button keep it held down and plug in the ac ..you should hear a beep...
one of two ways will reset the e1 error hope it helps..

blowing good but not cooling