I have a primo bottom load water cooler model # 900130 the pump is not working. How do I fix it

We started getting a blinking light... indicating the jug needed replacement... after installing a full jug. The unit would cycle, then the red blinking light would come back on. Upon careful inspection of the feed tube and lines, it was realized that the plastic line on the intake of the pump body had been inadvertently pulled out just slightly (presumably from jostling the jug around during replacement). I believe that this breaks the seal the unit requires for suction, and caused the fault. I simply pushed the (white) plastic line back into pump body and heard an audible 'click'. Unit works fine now. I hope this helps, as these units are not exactly cheap.