Long story short: no.
Your a/c unit must not run all the time.
It depends on what you indicate when you claim 'at all times'. Often it's typical for an AC to run extra often.
Let's break it down.
Your Air Conditioning Unit Ought To Run More than Typical When ...
It's hotter outside. The warmer the temperature level is outside, the longer your Air Conditioner will run to obtain your house to your desired temperature level.