EO error message

[2diesel2]

Just moved into a house and system won't work saying EO. Can anyone help

[ballvalve]

whats make is the system

[brunstar]

you will find the system is out on safety devices on the outdoor unit.
you will need an engineer to have a look at it.
It could be compressor motor overload, condenser fan motor overload, or a refrigerant problem depending on the model of your system.