Make sure the keg is full and the gas is turned on.
This could be caused by a faulty extractor within the keg. Change the keg, and bleed the fob detector, checking if the glass fills up correctly.
If it still fills with gas, the problem may lie with the keg connector.
- Firstly make sure the extractor on the top of the keg is free from dirt or bits of plastic.
- Check that the rubber seal on the bottom of the keg connector is in place and in good condition, free from splits.
- If your local technician has instructed you on how to change these seals, and left you spares, damaged seals should be replaced.
If the float still keeps dropping contact your local Technical Services.