air compressor keeps running
 

I come home tonite and shut the engine down. However the air compressor kept running. Came back outside 5 min later and it is still running.
So I disconnected the battery.
Anyone know what might be going on? I shut it down since I did not want to take the chance that the compressor would burn up

Will spend $530 tomorrow to get new bags installed. They showed me where it leaked.
The bags itself are $180 a piece. Could do the coils which would cost about the same to do, but I like the air so I will stick with the air.