E. Dennis hvac. They're in Dallas. Honest guy. Fair price. He won't sell you something you don't need.
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Don't see how to pull the fan out - I'll check unit about 28 yeaqrs old
Found the pressure switch, it is green, felt all around it in case it had a button I couldn't see, Put it all back together and turn unit on, it came on high pressure went pretty high, but can back down. Must be an auto reset that takes 30 minutes or so to reset.
Added more freon and left it at 250/50 which I think is where it works ok most of the time.
Thanks for all the help.