Very strange problem you have there. The only thing I can think of that would cause readings of 100/0 on a fully charged system is a restriction on the high side before the high side service port. So somewhere in the condesor or one of the high side hoses. A stuck TXV would cause high side readings to be high and low side to go to 0.

If it does it again, try feeling the high side pipes/hoses. If there is a restriction the hose will be cold after the restriction, rather than hot.