Good day bosses
Please I Fixed this Nexus INVETER AC like two weeks ago, and after a day of installing it, it started blinking EL OC .
I called a technician who came around and filled gas and cleaned some parts, the error didn’t display for like 4 days until yesterday night.
The technician advised I use power surge regulator of which I forgot to buy.
Could that be an issue? Please apart from that, what else could cause AC display such and how best can I fix it.