Air Suspension

Hi new to forum and looking for some help. I fitted new air bags to my disco 2 a few months ago and have had no problems since then until a couple of days ago, having not used it for three weeks I had to jump start car. after this whilst driving the ACE light came on (Amber) followed by the SLS light (Amber) then both air bags deflated together and it ends up on the bump stops. switch the car off and restart it and the air bags can be reinflated using the ORM switch and the compressor stops when their full. Drive it again and the same thing repeats. Any clue to the cause or remedy would be greatly appreciated