E4 error with 12btu logik split air conditioner

I assume it is a LG as you did not state: Try these links:

http://www.refrigeration-engineer.com/forums/showthread.php?20036-Need-help-trouble-shooting-mini-split-ac-error-code-quot-e4-quot

Anyone familiar with LG portable AC units Consumer Electronics Bob Is The...

LG Portable Air Conditioner Error Code

LG Window Air Conditioner Error Codes Sears PartsDirect

http://acerrorcode.com/tcl-air-conditioner-error-codes.html

This was googled: waves error codes
It showed a page in "images". Stated
"System abnormity" I think. Page was blurry.
Call a tech! Mini splits can be a troubleshooting nightmare! I think its a Fujitsu unit. It would help, and may save you some $$, to call around to find a technician who has worked on mini splits. And maybe find them a 1-800 # that is their tech support # before hand, so if the tech needs it, you have it. E4 is a vague description for a fault. Make sure you have cleaned air filters, cleaned o.d.coil (turn off power at breaker 1st). Changed batteries in remote. Work safe!

Mentioned here

https://www.google.com/search?q=Petra+3+phase+split+package+air+conditioner+showing+E4+Error

..

e4 error code comes for defrost. just remove the cover of your split ac, you shell found a sensor there , check for rat cut.

We have a SirAir Split unit Airconditioner, It's not cooling and shows e4 error.

Haam electric split type a/c e6 problem

PROBLEME AVEC MON CLIMATISEUR AIRWELL E4

Short of gas. Leak test and arrest it. Vacum and do gas charging

PROBLEM WITH THE INSIDE FAN MOTOR