Ddifference between Prest models 06000 and...

1/ Can you tell me the difference between your Presto Kitchen Kettle Multi Cooker models 06000 and 06003. I understand the the model 06003 uses an electronic temperature contol? 2/ Does the removable temperature control show the actual temperature settings in degrees or just numbers which would indicate higher or lower cooking temperatures?
3/ Does you warranty cover the finish on the inside of the cooking pot (teflon pealing) ?
4/ Why is this device no longer sugested for use as a deep frier.

Thanks John