My aircon nevo make give me a error E1 what is the problem

Generic Procedures for Clearing an E1 Error

1. Turn off the air conditioner and unplug it.
2. Hold down the power button, and keep it depressed while you or someone else plugs it back in. ...
3. Unplug the air conditioner again and plug it back in.

https://www.hunker.com/13407286/how-to-fix-an-air-conditioner-when-it-gives-you-an-e1-code

Hello, Mari-vick -

Without knowing the model number of your Aircon (an air conditioner, I believe), I can only provide you with generic instructions.

I hope you have the owner's manual and have checked there regarding the E1 error code.

If you do not have the manual, then . . .

Reasons for E1 error code, air conditioner:

1. Clean or replace the air filter. Note: Unplug the unit first. After cleaning or air filter replacement, plug the unit back in to the electrical outlet.

2. If the E1 error code still displays, it could mean one of the following problems:
- loose internal connections
- indoor and outdoor parts communications problem
- faulty control panel
Note: You may need an Aircon authorized repair technician for any such repairs.

Read more about the E1 error code on air conditioners and what may be malfunctioning here:
https://www.hunker.com/13407286/how-to-fix-an-air-conditioner-when-it-gives-you-an-e1-code

Best wishes.

High pressure or temperature cutout. Have the unit checked for a leak or a refrigerant flow problem.

THIS MEANS THAT THE ROOM THERMISTOR ( A DEVICE CONNECTED TO THE THERMOSTAT THAT DETECTS THE ROOM TEMPERATURE IS SHORTENED OR DEFECTIVE AND YOU NEED TO HAVE YOUR AIR CONDITION SERVICED

E1 Indoor / outdoor units communication error. https://acerrorcode.com/koppel-super-inverter-ac-error-codes.html

E1 Code validation check fail / shut down the unit and restart.

see more Air Conditioning Fault Codes

can give the model of that aircon

Split type
E1 Indoor and outdoor communication abnormal
possible damage main PCB at outdoor units due to power supply problem.

e2 error