My Animas Vibe was showing 0.50 Insulin on board for up to 12 hours, it went faulty after the first occlusion I had ever experienced. When the occlusion occurred I was giving a bolus and the pump only delivered 0.50 units and I had to give the rest by injection. Animas America told me that this was a known fault and to just allow for it. I didn't accept this as my pump usually showed just slightly less than the bolus given on the Insulin on Board screen and boluses were gone
after four hours. After being fobbed off twice I spoke to a nurse at Animas Animas and she couldn't explain what had happened and arranged for a new pump to be sent to me 'Just to be safe' It is a bit worrying that Animas know that this can happen and are not investigating to find out why.