lost

I have a 97 Dodge Caravan that I had recently replaced the battery. I noticed that following the battery change the heater control panel buttons started blinking. Despite the blinking lights, operation of each button is working. Is there a way to reset the program without bringing the van to the car dealer?

87 4Runner SR5 speed 4WD 22RE engine Old R12 converted to 134a Removed both lines from AC Condenser and poured in about 12 oz or so of the recommended flush A good amount of air is flushing out the other end but the liquid is coming out VERY, VERy slowly. At first only thick oily stuff but then more clear stuff I added but not nearly what I've put in. I flush for a minute or two then have stop for the compressor to catch up. I've been doing this for about an hour. I've never tried to flush a condenser before so is this normal? Wondering does it matter which direction I flush from? Also there is a smaller condenser hooked in front of the main condenser and lines came from main condenser to smaller one and from there to the accumulator.